Operating Manual - SUNNY CENTRAL STORAGE 500/630

Operating Manual
SUNNY CENTRAL STORAGE
500/630/720/760/800/850/900/1000
UTIL
IT Y
GRA
DE
ENGLISH
SCS-BE-E7-en-12 | 98-118000.02 | Version 1.2
Legal Provisions
SMA Solar Technology AG
Legal Provisions
The information contained in these documents is property of SMA Solar Technology AG. Any publication, whether in
whole or in part, requires prior written approval by SMA Solar Technology AG. Internal reproduction used solely for
the purpose of product evaluation or other proper use is allowed and does not require prior approval.
SMA Warranty
You can download the current warranty conditions from the Internet at www.SMA-Solar.com.
Software licenses
The licenses for the used software modules can be called up on the user interface of the product.
Trademarks
All trademarks are recognized, even if not explicitly identified as such. Missing designations do not mean that a
product or brand is not a registered trademark.
Modbus® is a registered trademark of Schneider Electric and is licensed by the Modbus Organization, Inc.
QR Code is a registered trademark of DENSO WAVE INCORPORATED.
Phillips® and Pozidriv® are registered trademarks of Phillips Screw Company.
Torx® is a registered trademark of Acument Global Technologies, Inc.
SMA Solar Technology AG
Sonnenallee 1
34266 Niestetal
Germany
Tel. +49 561 9522-0
Fax +49 561 9522-100
www.SMA.de
Email: info@SMA.de
Copyright © 2016 SMA Solar Technology AG. All rights reserved.
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Table of Contents
Table of Contents
1
2
Information on this Document .....................................................................................................
8
1.1
1.2
1.3
1.4
1.5
1.6
8
8
8
8
9
9
Safety............................................................................................................................................. 10
2.1
2.2
2.3
3
Validity ..............................................................................................................................................................
Target Group ....................................................................................................................................................
Additional Information......................................................................................................................................
Symbols.............................................................................................................................................................
Typographies ....................................................................................................................................................
Nomenclature ...................................................................................................................................................
Intended Use..................................................................................................................................................... 10
Safety Information ............................................................................................................................................ 11
Personal Protective Equipment......................................................................................................................... 14
Product Overview......................................................................................................................... 15
3.1
3.2
3.3
3.4
System overview ...............................................................................................................................................
Design of the Inverter .......................................................................................................................................
Devices of the Inverter......................................................................................................................................
Operating and Display Elements.....................................................................................................................
3.4.1
Function of the Switches................................................................................................................................... 17
3.4.1.1
3.4.1.2
3.4.1.3
3.4.2
4
Design of the User Interface............................................................................................................................ 25
Menu Structure................................................................................................................................................. 26
SC-COM user interface ................................................................................................................................... 27
3.4.5.1
3.4.5.2
3.4.5.3
3.5
LEDs on the Enclosure...................................................................................................................................... 22
LEDs on the Network Port................................................................................................................................ 23
LEDs on the Optical Fiber Terminals............................................................................................................... 24
BSC User Interface........................................................................................................................................... 25
3.4.4.1
3.4.4.2
3.4.5
Design............................................................................................................................................................... 18
Explanation of Symbols................................................................................................................................... 19
LEDs of the SC-COM ....................................................................................................................................... 22
3.4.3.1
3.4.3.2
3.4.3.3
3.4.4
Key Switch........................................................................................................................................................ 17
AC Disconnection Unit .................................................................................................................................... 17
DC Switchgear................................................................................................................................................. 18
Touch Display ................................................................................................................................................... 18
3.4.2.1
3.4.2.2
3.4.3
15
15
16
17
Design of the User Interface............................................................................................................................ 27
Tree View and Device View ............................................................................................................................ 27
Status Symbols ................................................................................................................................................. 28
Symbols on the Product.................................................................................................................................... 28
Transport and Mounting .............................................................................................................. 29
4.1
4.2
Safety during Transport and Mounting ........................................................................................................... 29
Requirements for Transport and Mounting ..................................................................................................... 29
4.2.1
4.2.2
4.2.3
Requirements and Ambient Conditions........................................................................................................... 29
Center of Gravity Marker on the Inverter ....................................................................................................... 29
Preparation for Mounting ................................................................................................................................ 30
4.2.3.1
4.2.3.2
4.3
Drilling Mounting Holes in the Foundation .................................................................................................... 30
Preparation for Mounting on a Base.............................................................................................................. 30
Transporting the Inverter .................................................................................................................................. 31
4.3.1
4.3.2
4.3.3
Operating Manual
Transporting the Inverter Using a Pallet Truck ................................................................................................ 31
Transporting the Inverter Using a Forklift or a Crane Fork ............................................................................ 31
Transporting the Inverter Using a Crane......................................................................................................... 32
SCS-BE-E7-en-12
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4.4
Mounting of the Inverter................................................................................................................................... 34
4.4.1
4.4.2
5
Safety during Installation ................................................................................................................................. 35
Preparing the Installation ................................................................................................................................. 36
5.2.1
5.2.2
5.3
5.4
5.5
5.6
Replacing the Desiccant Bag in the Inverter................................................................................................... 36
Mounting the Ventilation Plate ........................................................................................................................ 36
Installing the Grounding................................................................................................................................... 37
Installing the DC Connection ........................................................................................................................... 38
5.4.1
5.4.2
Requirements for the Cables and Terminal Lugs for the DC Connection...................................................... 38
Connecting the DC Cables.............................................................................................................................. 39
Installing the AC Connection ........................................................................................................................... 40
Connecting the Cables for Communication, Control, Supply Voltage and Monitoring .............................. 42
5.6.1
5.6.2
5.6.3
5.6.4
5.6.5
5.6.6
5.6.7
5.6.8
5.6.9
5.6.10
Connecting Optical Fibers with Subscriber Connector..................................................................................
Connecting Optical Fibers via Optical Fiber Pigtail.......................................................................................
Connecting the Network Cables.....................................................................................................................
Connecting the Cable for the External Fast Stop ...........................................................................................
Connecting the Cable for Remote Shutdown .................................................................................................
Connecting the Cable for the Status Report of the Insulation Monitoring....................................................
Connecting the Cable for the Supply Voltage ...............................................................................................
Connecting the Cable for the Status Report of the AC Contactor Monitoring.............................................
Connecting the Transformer Protection...........................................................................................................
Connecting Digital Inputs and Outputs...........................................................................................................
Safety When Disconnecting and Reconnecting Voltage Sources................................................................. 50
Disconnecting the Inverter................................................................................................................................ 51
6.2.1
6.2.2
6.3
Disconnecting the DC and AC Side................................................................................................................ 51
Disconnecting the Supply Voltage at the Inverter from Voltage Sources ..................................................... 51
Reconnecting the Inverter................................................................................................................................. 52
6.3.1
6.3.2
Reconnecting the Supply Voltage at the Inverter ........................................................................................... 52
Reconnecting the DC and AC Side................................................................................................................. 53
Operation ...................................................................................................................................... 54
7.1
7.2
7.3
Safety during Operation .................................................................................................................................. 54
Information on Settings..................................................................................................................................... 54
Configuring Network Settings ......................................................................................................................... 56
7.3.1
7.3.2
7.3.3
7.4
Information on Integrating the Inverter into a Local Network ....................................................................... 56
Configuring the Network Settings on the Computer...................................................................................... 56
Configuring Network Settings ......................................................................................................................... 56
Configuring System Settings ............................................................................................................................ 57
7.4.1
Changing the System Settings via the User Interface .................................................................................... 57
7.4.1.1
7.4.1.2
7.4.1.3
7.4.1.4
7.4.2
Setting the Date, Time and Time Zone ...........................................................................................................
Changing the Password for the User Groups ................................................................................................
Exporting, Importing and Resetting the Configuration ..................................................................................
Changing the System Name...........................................................................................................................
57
57
58
58
Changing System Settings via Touch Display ................................................................................................ 59
7.4.2.1
7.4.2.2
4
42
44
45
46
46
47
47
48
48
48
Disconnecting and Reconnecting................................................................................................. 50
6.1
6.2
7
Mounting the Inverter on a Foundation .......................................................................................................... 34
Mounting the Inverter on a Base..................................................................................................................... 34
Installation..................................................................................................................................... 35
5.1
5.2
6
SMA Solar Technology AG
SCS-BE-E7-en-12
Selecting the Language ................................................................................................................................... 59
Setting the Date, Time and Time Zone ........................................................................................................... 59
Operating Manual
SMA Solar Technology AG
7.4.2.3
7.4.2.4
7.5
Information on Setting Parameters .................................................................................................................. 60
Setting the Power Control ................................................................................................................................ 60
7.5.2.1
7.5.2.2
7.5.2.3
7.5.3
7.5.4
7.5.5
Setting the Inverter Behavior in the Event of Communication Disturbances ................................................. 63
Setting the Battery Type ................................................................................................................................... 64
Setting Inverter Parameters for the Storage System ....................................................................................... 65
Insulation Monitoring with GFDI and Insulation Monitoring Device ........................................................... 66
7.7.1.1
7.7.1.2
7.7.1.3
7.7.2
Safety with insulation monitoring with GFDI and insulation monitoring device........................................... 66
Switching to Insulated Operation ................................................................................................................... 66
Switching to Grounded Operation................................................................................................................. 67
Insulation Monitoring with Remote GFDI and Insulation Monitoring Device............................................... 67
7.7.2.1
7.7.2.2
7.7.2.3
Information on the Insulation of the Battery with Remote GFDI and Insulation Monitoring Device ........... 67
Switching to Insulated Operation ................................................................................................................... 67
Switching to Grounded Operation................................................................................................................. 68
Troubleshooting ............................................................................................................................ 69
8.1
8.2
Safety during Troubleshooting......................................................................................................................... 69
Reading Off Disturbance Messages ............................................................................................................... 69
8.2.1
8.2.2
8.3
8.4
Reading Off Error Messages via Touch Display ............................................................................................ 69
Reading Off Disturbance Messages via the User Interface .......................................................................... 69
Acknowledging Disturbance Messages.......................................................................................................... 69
8.3.1
8.3.2
Acknowledging Disturbance Messages via the Key Switch.......................................................................... 69
Acknowledging Disturbance Messages via the User Interface..................................................................... 69
Remedial Action in Case of Disturbances ....................................................................................................... 70
8.4.1
8.4.2
8.4.3
8.4.4
8.4.5
8.4.6
9
Specifying Setpoints ........................................................................................................................................ 60
Setting the Frequency-Dependent Active Power Control............................................................................... 61
Setting the Grid Voltage-Dependent Reactive Power Control ...................................................................... 62
Displaying Operating Data via the User Interface......................................................................................... 66
Changing the Insulation Monitoring................................................................................................................ 66
7.7.1
8
Selecting the Display Format........................................................................................................................... 59
Setting the Brightness....................................................................................................................................... 59
Parameter Settings............................................................................................................................................ 60
7.5.1
7.5.2
7.6
7.7
Table of Contents
Inverter Behavior in Case of Disturbances......................................................................................................
Explanation of the Error Tables .......................................................................................................................
Error Numbers 01xx to 13xx - Disturbance on the Utility Grid ....................................................................
Error Numbers 34xx to 40xx ‒ Disturbance at the DC Connection ............................................................
Error Numbers 6xxx to 9xxx - Disturbance on the Inverter...........................................................................
Error Numbers 1xxxx ‒ Disturbance on the Battery and Storage System...................................................
70
72
72
73
74
78
Maintenance ................................................................................................................................. 82
9.1
9.2
Safety during Maintenance ............................................................................................................................. 82
Maintenance Schedule and Consumables..................................................................................................... 83
9.2.1
9.2.2
9.3
Repair Schedule and Spare Parts.................................................................................................................... 85
9.3.1
9.3.2
9.3.3
9.3.4
9.4
Notes on Maintenance Work ......................................................................................................................... 83
Maintenance Work Every 24 Months ............................................................................................................ 84
Information on Repair Work............................................................................................................................
Demand-Based Annual Repairs.......................................................................................................................
Repairs every 10 Years ...................................................................................................................................
Repairs every 13 Years ...................................................................................................................................
85
85
85
85
Maintenance Work .......................................................................................................................................... 86
9.4.1
9.4.2
9.4.3
Operating Manual
Performing the Visual Inspection ..................................................................................................................... 86
Cleaning the Interior ........................................................................................................................................ 86
Checking the Seals........................................................................................................................................... 86
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9.4.4
9.4.5
9.4.6
9.4.7
9.4.8
9.4.9
9.4.10
9.4.11
9.4.12
9.4.13
9.4.14
9.4.15
9.4.16
9.5
SMA Solar Technology AG
Checking the Latches, Door Stops and Hinges ..............................................................................................
Checking the Inverter Surface .........................................................................................................................
Cleaning the Air Duct and Ventilation Grids ..................................................................................................
Cleaning the Ventilation Plate .........................................................................................................................
Checking the Bolted Connections of the Power Cabling...............................................................................
Checking the Labels .........................................................................................................................................
Inverter with Low-Temperature Option: Cleaning the Heating Elements ......................................................
Inverter with Low-Temperature Option: Checking the Heating Elements......................................................
Checking the Fans............................................................................................................................................
Checking the Heating Elements and Hygrostat..............................................................................................
Checking the Function of the UPS ...................................................................................................................
Checking the AC Disconnection Unit..............................................................................................................
Checking the DC switchgear...........................................................................................................................
87
88
89
89
90
91
93
94
95
96
97
98
99
Repair Work .....................................................................................................................................................100
9.5.1
Reading off the Replacement Interval Meter..................................................................................................100
10 Disposal .........................................................................................................................................101
11 Periodic Actions.............................................................................................................................102
11.1 Inserting the Cables..........................................................................................................................................102
11.2 Mounting and Disassembly Work...................................................................................................................102
11.2.1
11.2.2
11.2.3
Disassembling and Mounting the Panels........................................................................................................102
Disassembling and Mounting the Protective Covers......................................................................................103
Disassembling and Mounting the Ventilation Grids.......................................................................................104
11.3 Bolted Connections ..........................................................................................................................................106
11.3.1
11.3.2
Preparing the Grounding and DC Cables for Connection............................................................................106
Preparing the AC Connection .........................................................................................................................110
11.4 Clamp Connections ..........................................................................................................................................111
11.4.1
11.4.2
Connecting the Cable to the Spring-Cage Terminals.....................................................................................111
Connecting the Cable Shield Using a Shield Clamping Saddle...................................................................113
11.5 Entering the Password via the Touch Display .................................................................................................113
11.6 User Interface....................................................................................................................................................113
11.6.1
11.6.2
Logging Into the User Interface .......................................................................................................................113
Logging Out of the User Interface...................................................................................................................114
12 Function Description .....................................................................................................................115
12.1 Operating States ..............................................................................................................................................115
12.1.1
12.1.2
12.1.3
Overview of the Operating States ..................................................................................................................115
Stop...................................................................................................................................................................115
Grid Monitoring ..............................................................................................................................................116
12.1.3.1 Monitoring the Grid Voltage........................................................................................................................... 116
12.1.3.2 Monitoring the Power Frequency ................................................................................................................... 117
12.1.4
12.1.5
12.1.6
Grid Monitoring Time Reached.......................................................................................................................117
Shutdown..........................................................................................................................................................118
Disturbance.......................................................................................................................................................118
12.2 Safety Functions................................................................................................................................................118
12.2.1
Manual Shutdown Functions ...........................................................................................................................118
12.2.1.1 External Fast Stop ............................................................................................................................................ 118
12.2.1.2 Remote Shutdown............................................................................................................................................ 118
12.2.2
Automatic Shutdown Functions .......................................................................................................................119
12.2.2.1 Grid Management Shutdown ......................................................................................................................... 119
12.2.2.2 Transformer Protection..................................................................................................................................... 119
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12.2.2.3 Passive Islanding Detection............................................................................................................................. 119
12.2.2.4 Low-Temperature Option................................................................................................................................. 119
12.2.3
Grounding and Insulation Monitoring ............................................................................................................120
12.2.3.1
12.2.3.2
12.2.3.3
12.2.3.4
12.2.3.5
12.2.3.6
Mode of Operation ......................................................................................................................................... 120
GFDI ................................................................................................................................................................. 120
Remote GFDI.................................................................................................................................................... 121
Insulation Monitoring Device .......................................................................................................................... 122
GFDI and Insulation Monitoring Device......................................................................................................... 123
Remote GFDI and Insulation Monitoring Device ........................................................................................... 124
12.3 Grid Management Services.............................................................................................................................125
12.3.1
12.3.2
Requirements for Grid Management Services ...............................................................................................125
Dynamic Grid Support (FRT) ...........................................................................................................................125
12.3.2.1
12.3.2.2
12.3.2.3
12.3.2.4
Full and Limited Dynamic Grid Support (FRT)................................................................................................ 125
Grid Support in Case of Untervoltage (LVRT)................................................................................................ 126
Dynamic Undervoltage Detection................................................................................................................... 127
Grid Support in the Event of Overvoltage (HVRT)......................................................................................... 128
13 Operating Data and Parameters ................................................................................................130
13.1 BSC Operating Data and Parameters ............................................................................................................130
13.2 SC-COM Operating Data and Parameters ....................................................................................................131
14 Technical Data...............................................................................................................................134
14.1
14.2
14.3
14.4
14.5
14.6
14.7
14.8
Sunny Central Storage 500.............................................................................................................................134
Sunny Central Storage 630.............................................................................................................................135
Sunny Central Storage 720.............................................................................................................................137
Sunny Central Storage 760.............................................................................................................................138
Sunny Central Storage 800.............................................................................................................................140
Sunny Central Storage 850.............................................................................................................................142
Sunny Central Storage 900.............................................................................................................................143
Sunny Central Storage 1000 ..........................................................................................................................145
15 Appendix.......................................................................................................................................147
15.1 Information for Installation ...............................................................................................................................147
15.1.1
15.1.2
15.1.3
15.1.4
15.1.5
15.1.6
Requirements for the Mounting Location ........................................................................................................147
Requirements for the Support Surface ............................................................................................................148
Requirements for the Foundation and Cable Routing ....................................................................................149
Requirements for Cable Routing between MV Transformer and Inverter .....................................................150
Dimensions of the Inverter................................................................................................................................151
Minimum Clearances .......................................................................................................................................152
15.1.6.1 Minimum Clearances for Outdoor Installation .............................................................................................. 152
15.1.6.2 Minimum Clearances in Electrical Equipment Rooms.................................................................................... 154
15.1.7
15.2
15.3
15.4
15.5
15.6
15.7
Grounding Concept .........................................................................................................................................156
Storage..............................................................................................................................................................156
Torques..............................................................................................................................................................157
Type Label.........................................................................................................................................................158
Scope of Delivery .............................................................................................................................................158
Schematic Diagram ..........................................................................................................................................159
User Groups......................................................................................................................................................159
16 Contact...........................................................................................................................................160
Operating Manual
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1 Information on this Document
1
SMA Solar Technology AG
Information on this Document
1.1
Validity
This document is valid for the following device types from production version E7:
• SCS 500 (Sunny Central Storage 500)
• SCS 630 (Sunny Central Storage 630)
• SCS 720 (Sunny Central Storage 720)
• SCS 760 (Sunny Central Storage 760)
• SCS 800 (Sunny Central Storage 800)
• SCS 850 (Sunny Central Storage 850)
• SCS 900 (Sunny Central Storage 900)
• SCS 1000 (Sunny Central Storage 1000)
This document is valid for the following firmware versions:
• from OCU firmware version: 06.00.00.R
• from DSP firmware version: 06.00.00.R
• from BSC firmware version: 01.02.00.R
• from SC-COM firmware version: 2.32.00.R
The production version of the inverter is indicated on the type label.
The firmware version can be read off from the user interface.
Illustrations in this document are reduced to the essential and may deviate from the real product.
1.2
Target Group
The tasks described in this document must only be performed by qualified persons. Qualified persons must have the
following skills:
• Knowledge of how the product works and is operated
• Knowledge of how batteries work and are operated
• Training in how to deal with the dangers and risks associated with installing and using electrical devices and
installations
• Training in the installation and commissioning of electrical devices and installations
• Knowledge of all applicable standards and directives
• Knowledge of and adherence to this manual and all safety information
1.3
Additional Information
Links to additional information can be found at www.SMA-Solar.com.
1.4
Symbol
Symbols
Explanation
Indicates a hazardous situation which, if not avoided, will result in death or serious injury
Indicates a hazardous situation which, if not avoided, can result in death or serious injury
Indicates a hazardous situation which, if not avoided, can result in minor or moderate injury
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1 Information on this Document
SMA Solar Technology AG
Symbol
Explanation
Indicates a situation which, if not avoided, can result in property damage
Information that is important for a specific topic or goal, but is not safety-relevant
Indicates a requirement for meeting a specific goal
Desired result
A problem that might occur
1.5
Typographies
Typographies
Use
Example
• Display messages
bold
• Set parameter WGra to 0.2.
• Elements on a user interface
• Terminals
• Slots
• Elements to be selected
• Elements to be entered
>
• Connects several elements to be
selected
• Select PV system > Detect.
[Button/Key]
• Button or key to be selected or
pressed
• Select [Start detection].
1.6
Nomenclature
Complete designation
Designation in this document
Sunny Central Storage
Inverter
Battery System Controller
BSC or communication unit
Battery Management System
BMS
Fuel Save Controller
FSC
Medium-voltage transformer
MV transformer
Sunny Central Communication Controller
SC-COM or communication unit
Storage System Controller
SSC
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2 Safety
2
2.1
SMA Solar Technology AG
Safety
Intended Use
The Sunny Central Storage is a battery inverter that converts the direct current supplied by a battery into grid-compliant
alternating current. An external MV transformer fitted downstream feeds the alternating current into the utility grid. The
Sunny Central Storage can be used in off-grid systems based on diesel generators (gensets) as well as in utility grids
for the provision of grid services.
The product is suitable for indoor and outdoor use.
The enclosure complies with degree of protection IP54. The inverter is classified under Class 4C2 as per
EN 60721-3-4 and is suitable for operation in a chemically active environment.
The Sunny Central Storage must only be operated in connection wit a battery approved by
SMA Solar Technology AG. The entire battery voltage range must be completely within the permissible DC input
voltage range of the Sunny Central Storage. The maximum permissible DC input voltage of the Sunny Central Storage
must not be exceeded.
If the battery has no fuse switch-disconnector or circuit breaker, a fuse switch-disconnector or circuit breaker must be
installed between the battery and the inverter which is able to securely switch off the short-circuit current of the battery
under fault conditions.
The inverter must only be operated in conjunction with a suitable MV transformer. The MV transformer must be
designed for voltages that arise during pulsed mode of the inverter. The maximum AC voltages to ground are as
follows:
• For the Sunny Central Storage 500 / 630 / 720 / 760 / 800, the maximum voltage to ground is: ±1450 V.
• For the Sunny Central Storage 850 / 900 / 1000, the maximum voltage to ground is: ±1600 V.
Do not deactivate or modify settings that affect grid management services without first obtaining approval from the grid
operator.
The type label must remain permanently attached to the product.
Use this product only in accordance with the information provided in the enclosed documentation and with the locally
applicable standards and directives. Any other application may cause personal injury or property damage.
Alterations to the product, e.g. changes or modifications, are only permitted with the express written permission of
SMA Solar Technology AG. Unauthorized alterations will void guarantee and warranty claims and in most cases
terminate the operating license. SMA Solar Technology AG shall not be held liable for any damage caused by such
changes.
Any use of the product other than that described in the Intended Use section does not qualify as appropriate.
The enclosed documentation is an integral part of this product. Keep the documentation in a convenient place for
future reference and observe all instructions contained therein.
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2 Safety
SMA Solar Technology AG
2.2
Safety Information
This section contains safety information that must be observed at all times when working on or with the product. To
prevent personal injury or property damage and to ensure long-term operation of the product, read this section
carefully and observe all safety information at all times.
Danger to life from electric shock due to live voltage
High voltages are present in the live components of the product. Touching live components results in death or serious
injury due to electric shock.
• Wear suitable personal protective equipment for all work on the product.
• Do not touch any live components.
• Observe all warning messages on the product and in the documentation.
• Observe all safety information of the battery manufacturer.
• Before any work is performed, always disconnect the following devices externally:
– Grid voltage for grid feed-in
– Internal power supply
– DC voltage of the battery
– Additional external voltages, e.g. control signals from a control room
• Ensure that no disconnected devices can be reconnected.
• After switching off the inverter, wait at least 15 minutes before opening it to allow the capacitors to discharge
completely.
• Before working on the inverter, make sure that all devices are completely voltage-free.
• Cover or isolate any adjacent live components.
Danger to life from electric shock due to live DC cables
DC cables connected to a battery are live. Touching live cables results in death or serious injury due to electric
shock.
• Prior to connecting the DC cables, ensure that the DC cables are voltage-free.
• Wear suitable personal protective equipment for all work on the product.
Danger to life due to high short-circuit current in the battery
Despite careful construction, a short circuit may occur in the inverter under fault conditions. In case of a short circuit in
the inverter, the connected battery can supply a very high short-circuit current. The resulting electric arc and pressure
wave lead to death or serious injuries.
• Install the inverter in a closed electrical operating area.
• Always close and lock the inverter.
• Before entering the operating area, externally disconnect the inverter on the AC and DC side.
• Only open the inverter when it is completely disconnected and the capacitors are fully discharged.
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2 Safety
SMA Solar Technology AG
Danger to life from electric shock due to ground fault
If there is a ground fault, system components that are supposedly grounded may in fact be live. Touching incorrectly
grounded components results in death or serious injuries from electric shock.
• Before working on the system, ensure that no ground fault is present.
• Wear suitable personal protective equipment for all work on the product.
Danger to life from electric shock due to damaged product
Operating a damaged product can lead to hazardous situations that result in death or serious injuries due to electric
shock.
• Only operate the product when it is in a flawless technical condition and safe to operate.
• Check the product regularly for visible damage.
• Make sure that all external safety equipment is freely accessible at all times.
• Make sure that all safety equipment is in good working order.
• Wear suitable personal protective equipment for all work on the product.
Danger to life from electric shock even if the inverter is disconnected on the AC and DC sides
The precharge unit will carry live voltage even if the AC disconnection unit and the DC switchgear are open.
Touching live components results in death or serious injury due to electric shock.
• Do not touch any live components.
• Switch off the inverter.
• After switching off the inverter, wait at least 15 minutes before opening it to allow the capacitors to discharge
completely.
• Ensure that no voltage is present.
• Do not remove protective covers.
• Observe the warning messages.
• Wear suitable personal protective equipment for all work on the product.
Danger to life from electric shock when entering the storage system
Damaged insulation in the storage system can cause lethal ground currents. Lethal electric shocks can result.
• Ensure that the insulation resistance of the storage system exceeds the minimum value. The minimum value of the
insulation resistance is: 14 kΩ.
• Before entering the storage system, switch the system with the ground fault detection system (GFDI or
Remote GFDI) to insulated operation.
• The inverter must be installed in a closed electrical operating area.
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Danger to life from electric shock if the product is not locked
If the product is not locked, unauthorized persons will have access to live components carrying lethal voltages.
Touching live components can result in death or serious injury due to electric shock.
• Always close and lock the product.
• Remove the keys.
• Store the keys in a safe place.
• Ensure that no unauthorized persons have access to the closed electrical operating area.
Danger to life due to blocked escape routes
In hazardous situations, blocked escape routes can lead to death or serious injury. Opening the doors of two
products located opposite each other can block the escape route. It is imperative that the escape route is freely
accessible at all times.
• An escape route must be available at all times. Make sure the minimum passage width of the escape route
meets local standards.
• Do not place any objects in the escape route area.
• Remove all tripping hazards from escape routes.
Risk of fire due to failure to observe torque specifications on live bolted connections
Failure to follow the specified torques reduces the ampacity of live bolted connections so that the contact resistances
increase. This can cause components to overheat and catch fire.
• Ensure that live bolted connections are always tightened with the exact torque specified in this document.
• When working on the device, use suitable tools only.
• Avoid repeated tightening of live bolted connections as this may result in inadmissibly high torques.
Risk of burns due to hot components
Some components of the product can get very hot during operation. Touching these components can cause burns.
• Observe the warnings on all components.
• During operation, do not touch any components marked with such warnings.
• After switching off the product, wait until any hot components have cooled down sufficiently.
• Wear suitable personal protective equipment for all work on the product.
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Property damage due to dust intrusion and moisture penetration
Dust or moisture intrusion can damage the product and impair its functionality.
• Do not open the enclosure during rainfall or when humidity exceeds the specified thresholds. The humidity
thresholds are: 15% to 95%.
• Only perform maintenance work when the environment is dry and free of dust.
• Operation of the product is only permitted when it is closed.
• Connect the external supply voltage after mounting and installing the product.
• If the installation or commissioning process is interrupted, mount all panels.
• Close and lock the enclosure.
• The product must always be closed for storage.
• Store the product in a dry and covered location.
• Temperature at the storage location must be in the specified range. The temperature range is: −25°C to +70°C
.
Damage to electronic components due to electrostatic discharge
Electrostatic discharge can damage or destroy electronic components.
• Observe the ESD safety regulations when working on the product.
• Wear suitable personal protective equipment for all work on the product.
• Discharge electrostatic charge by touching grounded enclosure parts or other grounded elements. Only then is
it safe to touch electronic components.
2.3
Personal Protective Equipment
Always wear suitable protective equipment
When working on the product, always wear the appropriate personal protective equipment for the specific job.
The following personal protective equipment is regarded to be the minimum requirement:
☐ In a dry environment, safety shoes of category S3 with perforation-proof soles and steel toe caps
☐ During precipitation or on moist ground, safety boots of category S5 with perforation-proof soles and steel toe
caps
☐ Tight-fitting work clothes made of 100% cotton
☐ Suitable work pants
☐ Individually fitted hearing protection
☐ Safety gloves
Any other prescribed protective equipment must also be used.
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3
Product Overview
3.1
System overview
The Sunny Central Storage is a battery inverter that converts the direct current supplied by a battery into grid-compliant
alternating current. An external MV transformer fitted downstream feeds the alternating current into the utility grid. The
Sunny Central Storage can be used in off-grid systems based on diesel generators (gensets).
3.2
Design of the Inverter
A
B
C
Figure 1: Design of the Inverter
Position
Designation
A
Inverter cabinet
B
Interface cabinet
C
Connection area
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3.3
SMA Solar Technology AG
Devices of the Inverter
D
E
A
Stop Start
B
F
C
G
Figure 2: Devices of the inverter
Position
Designation
Description
A
Touch Display
Different kinds of inverter data can be viewed on the touch display.
The touch display is only used to view data. The display screen is activated by touching the touch display.
B
Service interface
The service interface allows access to the user interface.
C
Key switch
The key switch is used to switch the inverter on and off.
D
DC switchgear
The DC switchgear disconnects the inverter from the battery.
E
Battery System Controller
The Battery System Controller is the communication interface of the
inverter to the Battery Management System, the Fuel Save Controller
or the SCADA system.
F
AC disconnection unit The AC disconnection unit disconnects the inverter from the MV transformer.
G
SC-COM
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The SC-COM allows for correct communication between the Battery System Controller and the inverter.
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3.4
3.4.1
3.4.1.1
Operating and Display Elements
Function of the Switches
Key Switch
Figure 3: Switch positions of the key switch
Position
Designation
A
Switch position Stop
B
Switch position Start
3.4.1.2
AC Disconnection Unit
The AC disconnection unit disconnects the inverter from the MV transformer.
Figure 4: Switch positions of the AC disconnection unit from ABB
Position
Designation
Explanation
A
Switch position on
The AC disconnection unit is closed.
B
Central switch position
The AC disconnection unit was tripped and is open.
C
Switch position off
The AC disconnection unit is open.
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3.4.1.3
SMA Solar Technology AG
DC Switchgear
A
B
D
C
Figure 5: Indicators on the DC load-break switch
Position
Designation
A
Spring status indicator
B
Position indicator
C
ON button
D
OFF button
3.4.2
3.4.2.1
Touch Display
Design
The touch display is used to display instantaneous values and parameter settings. Tapping the symbols on the touch
display activates the corresponding functions. If the touch display has not been touched for five minutes, the display is
locked and the logged-in user will be logged out. By tapping the characters "S", "M" or "A", you can unlock the display
again.
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The touch display is divided into three areas.
Figure 6: Design of the touch display
Position
Designation
Explanation
A
Status info line
Number of the active menu, login status and time
B
Information field
Area of the main menu
C
Navigation line
Navigation area
3.4.2.2
Explanation of Symbols
Information field
You can access the following sub-menus and screens from the information field:
Symbol
Designation
Explanation
DC side
Representation of the instantaneous values
• DC power in W
• Insulation resistance in Ω
• DC current in A
• DC voltage in V
Switch on DC or AC side
closed
If you see this symbol between the "DC side" symbol and the "Inverter
data" symbol, the DC switchgear is closed.
If you see this symbol between the symbol "Inverter data" and the symbol
"AC side", the AC disconnection unit is closed.
Switch on DC or AC side
open
If you see this symbol between the "DC side" symbol and the "Inverter
data" symbol, the DC switchgear is open.
If you see this symbol between the symbol "Inverter data" and the symbol
"AC side", the AC disconnection unit is open.
Status of switches on DC or If you see this symbol between the "DC side" symbol and the "Inverter
AC side unknown
data" symbol, the switch status of the DC switchgear is not known.
If you see this symbol between the symbol "Inverter data" and the symbol
"AC side", the switch status of the AC disconnection unit is unknown.
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Symbol
SMA Solar Technology AG
Designation
Explanation
Inverter data
Representation of the following inverter data:
• Device type
• Operating state
• Symbol for utility grid menu
• Symbol for temperature display
• Symbol for fan display
AC side
Representation of the following instantaneous values:
• Active power in W
• Reactive power in VAr
• Power frequency in Hz
• AC current in A
• AC voltage in V
grid
First menu page:
• Active mode of active power limitation
• Actual active power in kW
Second menu page
• Active mode of reactive power setpoint
• Actual reactive power in VAr
• Actual displacement power factor cos φ
• Actual excitation type of the displacement power factor
Settings Menu
Symbol
Designation
Explanation
Language selection
Select this symbol to open the language selection menu.
Brightness setting
Select this symbol to open the brightness setting menu.
Time setting
Select this symbol to open the time setting menu.
Format selection
Select this symbol to open the format selection menu.
Password entry
Select this symbol to open the password entry menu.
Navigation line
Symbol
20
Designation
Explanation
Back
Select this symbol to go back to the previous page.
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Symbol
Designation
Explanation
Homepage
Select this symbol to go to the homepage.
Settings
• Language selection
• Brightness setting
• Time setting
• Format selection
• Password entry
Information
• OS: version of the operating system
• App.: version of the application software
• SC-COM version: SC-COM software version
• Ser.No.: inverter serial number
• Hardware: hardware version and serial number of the SC-COM
Error
• ErrNo: error number
• TmsRmg: time until reconnection
• Msg: error message
• Dsc: corrective measure
Service
• Telephone receiver: Contact Service.
• Tool: Contact your installer.
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3.4.3
3.4.3.1
SMA Solar Technology AG
LEDs of the SC-COM
LEDs on the Enclosure
Figure 7: LEDs on the enclosure
LED designation
Status
Explanation
POWER
glowing green
The SC-COM is supplied with voltage.
off
The SC-COM is not supplied with voltage.
SD1
flashing green
Read or write access to system drive
SD2
flashing green
Read or write access to internal data drive
CF
flashing green
Read or write access to external SD memory card
H1
flashing green
The SC-COM is transmitting data to Sunny Portal/FTP server.
glowing green
The most recent data transmission to Sunny Portal/FTP server was
successful.
glowing red
The most recent data transmission to Sunny Portal/FTP server has
failed.
off
Data transmission to Sunny Portal/FTP server is deactivated.
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LED designation
Status
Explanation
H2
flashing green
The SC-COM is communicating with the devices connected within the
system.
glowing green
Internal communication has taken place in the last five minutes.
glowing red
An error has occurred in the internal communication.
off
No internal communication for more than five minutes.
flashing red
The SC-COM is starting up.
glowing red
An error has occurred in the SC-COM.
glowing green
The SC-COM is ready for use.
glowing green
An internal memory card exists and less than 92% of its storage capacity is used.
glowing red
The internal memory card is full and the oldest saved data is being
overwritten.
flashing red
92% of the storage capacity of the internal memory card is used.
glowing green
An external memory card exists and less than 92% of its storage capacity is used.
glowing red
The external memory card is full.
flashing red
92% of the storage capacity of the external memory card is used.
off
There is no external memory card.
H6
-
Not assigned
H7
-
Not assigned
H8
flashing green
Application is running.
H3
H4
H5
3.4.3.2
LEDs on the Network Port
Figure 8: LEDs on the network port
Position
LED
Color
Status
Explanation
A
Speed
yellow
on
100 MBit data transfer rate
off
10 MBit data transfer rate
on
Connection (Link) established.
flashing
The SC-COM is transmitting or receiving data (Activity).
off
No connection established.
B
Link/Activity
Operating Manual
green
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3.4.3.3
SMA Solar Technology AG
LEDs on the Optical Fiber Terminals
The SC-COM is also available with pre-wired optical fiber connections. If the optical fibers are connected to the splice
box of the inverter, the status of the connection will be indicated by the LEDs of the SC-COM.
Figure 9: LEDs for the status of the optical fiber connection
Position
LED
Color
Status
Explanation
A
Link / Activity
green
on
Connection (Link) established.
flashing
The SC-COM is transmitting or receiving data
(Activity).
off
No connection established.
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3.4.4
BSC User Interface
3.4.4.1
Design of the User Interface
Via the Battery System Controller user interface, you can set the communication of the devices, perform parameter
settings and read off error messages and the operating data.
E
A
B
C
F
D
Figure 10: Design of the user interface (example)
Position
Explanation
A
Navigation bar first level
B
Navigation bar second level
C
Left menu bar
D
Status bar
E
Language selection
F
Input area
Status bar
A
B
C
D
E
F
Figure 11: Design of the status bar (example)
Position
Explanation
A
Software version of the Battery System Controller
B
Page number of the user interface
C
Station status
D
User group currently logged in
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Position
Explanation
E
Date
F
Time
3.4.4.2
Menu Structure
Menu level
My Plant*
SCS
Explanation
‒
Current station data
Overview
Table View
Current station data in tabular form and device information, e.g. software version. This data is only available
once the inverter has been commissioned.
Measurements
Inverter
Current inverter data
Battery
Current battery data
Date / Time
Date and time settings
Access Control
Password settings
IP Config
Network settings
Operation limits
Manual setpoint of the voltage-, current and SOC limits
System
Global settings
Data Source
Selection of the data source for the setpoints
Droops
P(f)- and Q(U) characteristic curve data
Power Setpoints
Power setpoint settings for the inverter
Station
All power parameter settings of the system
Battery Status
Current connected battery data
Events
Error
Messages, events, warnings and errors
Fuse**
Backup
Export, import and resetting of the settings
‒
Log out
Settings**
Functions**
Logout
* The name of the system is freely selectable.
** This menu level is only available to the "Installer" user group.
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3.4.5
3.4.5.1
SC-COM user interface
Design of the User Interface
C
D
A
E
B
Figure 12: Design of the user interface (example)
Position
Designation
A
Tree view or device view
B
Status bar
C
Logout button
D
Navigation bar
E
Content area
3.4.5.2
Tree View and Device View
You can call up data of the individual devices in the tree view and in the device view. Depending on which view you
have selected, the devices are sorted differently.
Symbol
Operating Manual
Designation
Explanation
Tree view
In the tree view, the user interface shows the devices in the order in which they are connected to the data bus.
Device view
In the device view, the user interface shows all devices sorted
by device type. The number shown in parentheses indicates the
number of devices of a device type.
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3.4.5.3
SMA Solar Technology AG
Status Symbols
Depending on the status of the device communication, the device symbols are displayed in the tree or device view with
various status symbols.
Symbol
Explanation
The inverter is ready for operation.
There is an error in the inverter.
An error has occurred in the communication with the inverter.
3.5
Symbols on the Product
The following gives an explanation of all the symbols found on the inverter and on the type label.
Symbol
28
Designation
Explanation
CE marking
The product complies with the requirements of the applicable EU directives.
Protection class I
All electrical equipment is connected to the grounding conductor system of the product.
Degree of protection IP54
The product is protected against interior dust deposits and splashing
water from all angles.
Beware of a danger zone
This warning symbol indicates a danger zone. Be particularly vigilant
and cautious when working on the product.
Beware of dangerous voltage
The product operates at high voltages. All work on the product must
be carried out by qualified persons only.
Beware of hot surface
The product can get hot during operation. Avoid contact during operation. Allow the product to cool down sufficiently before carrying out
any work. Wear personal protective equipment such as safety
gloves.
Use hearing protection.
The product generates loud noises. When working on the product,
wear hearing protection.
Observe the documentation.
Observe all documentation supplied with the product.
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4
4 Transport and Mounting
Transport and Mounting
4.1
Safety during Transport and Mounting
Danger of crushing if raised or suspended loads tip over, fall or sway
Vibrations or careless or hasty lifting and transportation may cause the product to tip over or fall. This can result in
death or serious injury.
• All national standards and provisions for transport must be respected.
• Always transport the product as close to the floor as possible.
• Use all suspension points for transportation.
• Avoid fast or jerky movements during transport.
• Always maintain a sufficient safety distance from the product during transport.
• All means of transport and auxiliary equipment used must be designed for the weight of the product. Weight:
1900 kg.
• Wear suitable personal protective equipment for all work on the product.
• Disassemble the kick plates when transporting the inverter with a forklift, pallet truck or crane fork. Thus, the
contact surface of the product on the forks is sufficiently extended (see Section 11.2.1, page 102).
Damage to the frame construction of the inverter due to uneven support surface
Placing the inverter on uneven surfaces can cause buckling so that the inverter doors will no longer close properly.
This may lead to moisture and dust penetration into the inverter.
• Never place the inverter on an unstable, uneven surface even for a short period of time.
• The unevenness of the support surface must be less than 0.25%.
• The support surface must be suitable to take the weight of the inverter. Weight: 1900 kg.
• Do not transport the inverter with mounted kick plates.
4.2
4.2.1
Requirements for Transport and Mounting
Requirements and Ambient Conditions
☐ The requirements for the mounting location must be met (see Section 15.1.1, page 147).
☐ The requirements for the support surface must be met (see Section 15.1.2, page 148).
☐ The requirements for the foundation and cable arrangement must be met (see Section 15.1.3, page 149).
☐ Minimum clearances must be observed (see Section 15.1.6, page 152).
4.2.2
Center of Gravity Marker on the Inverter
The center of gravity of the inverter is not in the middle of the device. Take this into account during transport. The center
of gravity of the inverter is marked on the packaging and on the enclosure with the center of gravity symbol.
Figure 13: Center of gravity symbol
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4.2.3
SMA Solar Technology AG
Preparation for Mounting
4.2.3.1
Drilling Mounting Holes in the Foundation
The inverter must be attached to the support surface by means of six bolts. Mounting holes for attaching the inverter to
the foundation or the base are located in the inverter floor.
Figure 14: Position of the mounting holes
Position
Designation
A
Mounting holes for mounting on a base or mounting surface
B
Mounting holes for mounting on a base
C
Mounting holes for mounting on a mounting surface
Additionally required material (not included in the scope of delivery):
☐ Six suitable concrete screw anchors
Procedure:
1. Mark the positions of the drill holes on the mounting surface.
2. Drill mounting holes at the marked positions.
3. Push the concrete dowels into the drill holes.
4.2.3.2
Preparation for Mounting on a Base
Requirement:
☐ The base must level off above the ground level. The base height above ground level is approx.: 150 mm.
Procedure:
1. Insert all cables through the openings into the base. Make sure that the data cables are routed separately from
the power cables.
2. Seal the opening, e.g. with expanding foam. This will prevent living creatures from getting into the inverter.
3. Fill up the excavation pit and level off to ground level.
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4.3
4.3.1
4 Transport and Mounting
Transporting the Inverter
Transporting the Inverter Using a Pallet Truck
1. If the inverter is to be transported on a wooden pallet, push the
pallet truck under the inverter from the front or the back.
2. If the inverter is to be transported without wooden pallet,
disassemble the kick plates (see Section 11.2.1, page 102).
Move the pallet truck under the inverter from the side only.
Make sure the the side panels of the inverter are not damaged
by the forks.
3. Slightly raise the inverter.
4. Transport the inverter to the mounting location and set it down on a suitable surface.
4.3.2
Transporting the Inverter Using a Forklift or a Crane Fork
1. Disassemble the panels (see Section 11.2.1, page 102).
2. If a crane fork is used, move the forks of the crane fork under
the inverter from the front or the back. Take the center of
gravity of the inverter into account and move the crane fork
completely under the inverter.
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3. If a forklift is used, move the forks of the forklift under the
inverter from the front or the back. Take the center of gravity of
the inverter into account and move the forklift completely under
the inverter.
4. Secure the inverter, e.g., with harness, to prevent it from tipping over.
5. Slightly raise the inverter.
6. Transport the inverter to the mounting location and set it down on a suitable surface.
4.3.3
Transporting the Inverter Using a Crane
In order to transport the inverter with a crane, the roof must be disassembled.
The shackles are not included in the scope of delivery of the inverter.
Danger of crushing due to heavy, unwieldy roof
The inverter roof is heavy and bulky. If you try to move the roof on your own, you run a risk of having limbs crushed.
Weight of the roof: 30 kg.
• Wear suitable personal protective equipment for all work on the product.
• Always have two persons disassemble and mount the roof.
Property damage due to rupture of grounding conductors
The components are connected to the inverter via the grounding conductor. If the roof is not disassembled correctly,
the grounding conductors may be pulled out.
• Take care not to damage the grounding conductors during disassembly.
Procedure:
1. Disassemble the ventilation grid (see Section 11.2.3, page 104).
2. Pull the front edge of the roof forward and push upward.
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3. Gently push the roof to the rear. In doing so, you push the roof
out of the guide rails.
4. Remove the grounding conductor from the inverter.
5. Remove the roof and set it down on a suitable surface.
6. Attach the hoist to all four lifting lugs- (hole diameter: 40°mm).
7. Raise the crane hook slowly until the hoist is taut.
8. Ensure that the hoist is attached correctly.
9. Slightly raise the inverter.
10. Transport the inverter as close to the floor as possible.
11. Transport the inverter to the mounting location and set it down on a suitable surface.
12. Place the roof on the inverter.
13. Screw the grounding conductor to the inverter (torque: 14.2 Nm).
14. Slide the roof into the guide rails on the inverter and pull
forward.
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15. Press the roof down.
16. Mount the ventilation grids (see Section 11.2.3, page 104).
4.4
Mounting of the Inverter
4.4.1
Mounting the Inverter on a Foundation
Requirements:
☐ The inverter must be off the Euro pallet and has to stand at the mounting location.
☐ The mounting holes must be drilled in the foundation and appropriate screw anchors inserted (see
Section 4.2.3.1, page 30).
Additionally required material (not included in the scope of delivery):
☐ Six suitable screws to attach the inverter
Procedure:
• Attach the inverter to the mounting surface with the bolts.
4.4.2
Mounting the Inverter on a Base
Requirements:
☐ The inverter must be off the Euro pallet and has to stand at the mounting location.
☐ The base must be prepared for installation (see Section 4.2.3.2, page 30).
Additionally required material (not included in the scope of delivery):
☐ Six suitable hammer nuts to attach the inverter
Procedure:
• Attach the inverter with the screws (from the scope of delivery of the base) and hammer nuts to the base.
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5
5 Installation
Installation
5.1
Safety during Installation
Danger to life from electric shock due to live voltage
High voltages are present in the live components of the product. Touching live components results in death or serious
injury due to electric shock.
• Wear suitable personal protective equipment for all work on the product.
• Do not touch any live components.
• Observe all warning messages on the product and in the documentation.
• Observe all safety information of the battery manufacturer.
• Before any work is performed, always disconnect the following devices externally:
– Grid voltage for grid feed-in
– Internal power supply
– DC voltage of the battery
– Additional external voltages, e.g. control signals from a control room
• Ensure that no disconnected devices can be reconnected.
• After switching off the inverter, wait at least 15 minutes before opening it to allow the capacitors to discharge
completely.
• Before working on the inverter, make sure that all devices are completely voltage-free.
• Cover or isolate any adjacent live components.
Danger to life from electric shock due to live DC cables
DC cables connected to a battery are live. Touching live cables results in death or serious injury due to electric
shock.
• Prior to connecting the DC cables, ensure that the DC cables are voltage-free.
• Wear suitable personal protective equipment for all work on the product.
Danger to life from electric shock due to ground fault
If there is a ground fault, system components that are supposedly grounded may in fact be live. Touching incorrectly
grounded components results in death or serious injuries from electric shock.
• Before working on the system, ensure that no ground fault is present.
• Wear suitable personal protective equipment for all work on the product.
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Danger to life from electric shock when entering the storage system
Damaged insulation in the storage system can cause lethal ground currents. Lethal electric shocks can result.
• Ensure that the insulation resistance of the storage system exceeds the minimum value. The minimum value of the
insulation resistance is: 14 kΩ.
• Before entering the storage system, switch the system with the ground fault detection system (GFDI or
Remote GFDI) to insulated operation.
• The inverter must be installed in a closed electrical operating area.
Risk of fire due to failure to observe torque specifications on live bolted connections
Failure to follow the specified torques reduces the ampacity of live bolted connections so that the contact resistances
increase. This can cause components to overheat and catch fire.
• Ensure that live bolted connections are always tightened with the exact torque specified in this document.
• When working on the device, use suitable tools only.
• Avoid repeated tightening of live bolted connections as this may result in inadmissibly high torques.
DC-side disconnection
If the battery has no fuse switch-disconnector or circuit breaker, a fuse switch-disconnector or circuit breaker must
be installed between the battery and the inverter which is able to securely switch off the short-circuit current of the
battery under fault conditions.
Standards and guidelines applicable at the installation location
• Adhere to all standards and directives for the installation of electrical devices and systems applicable at the
installation location.
5.2
Preparing the Installation
5.2.1
Replacing the Desiccant Bag in the Inverter
Desiccant bag in the inverter cabinet
The desiccant bag in the inverter cabinet protects the electronic components from moisture. The desiccant bag
must be replaced by a new desiccant bag included in the scope of delivery one day before commissioning.
Procedure:
1. Remove and dispose of the desiccant bag located under the inverter bridges.
2. Remove the desiccant bag included in the scope of delivery from the foil and position it under the inverter bridges.
5.2.2
Mounting the Ventilation Plate
The guide rails for the ventilation plate are located in the floor area of the inverter cabinet.
Procedure:
• Slide the ventilation plate into the guide rails in the inverter cabinet. The ventilation grid in the ventilation plate
should be facing the rear panel.
☑ The ventilation plate is flush with the inverter.
✖ The ventilation plate will not go all the way in?
• Grip the ventilation plate from underneath and press the middle part upwards while sliding it in.
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5.3
Installing the Grounding
A
B
Figure 15: Position of grounding in the inverter (example)
Position
Designation
A
Grounding busbar
B
Cable support rail
Terminal lug requirements:
☐ Use tin-plated terminal lugs only.
☐ For the connection, only the supplied screws, washers and nuts must be used.
☐ The terminal lugs must be designed according to the temperature. Temperature: +95°C
☐ The width of the terminal lugs must exceed the washer diameter. Washer diameter: 32 mm. This will ensure that
the defined torques are effective over the whole surface.
Cable requirements:
☐ Do not attach more than one cable to each connection bracket.
☐ Use copper or aluminum cables only.
☐ Maximum cable cross-section: 400 mm².
Torques of the power connections:
Type of terminal lug
Torque
Tin-plated aluminum or copper terminal lug on aluminum bar
37 Nm
Additionally required mounting material (not included in the scope of delivery):
☐ Clean cloth
☐ Ethanol cleaning agent
Procedure:
1. Disassemble the panels (see Section 11.2.1, page 102).
2. Disassemble the protective covers (see Section 11.2.2, page 103).
3. Prepare the cables for connection (see Section 11.3, page 106).
4. Clean the tin-plated contact surfaces in the connection area with the non-woven abrasive until they have a light
metallic sheen.
5. Clean all contact surfaces in the connection area using a clean cloth and ethanol cleaning agent and do not
touch the contact surfaces after cleaning.
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6. Connect the cables in accordance with the circuit diagram. Only use the screws, nuts and washers included in the
scope of delivery and make sure that the screw heads always point forwards.
7. Secure the cables on the cable support rail. This will prevent the cable from being pulled out inadvertently.
8. Mount the protective covers (see Section 11.2.2, page 103).
9. Mount the panels (see Section 11.2.1, page 102).
5.4
Installing the DC Connection
5.4.1
Requirements for the Cables and Terminal Lugs for the DC Connection
DC-side disconnection
If the battery has no fuse switch-disconnector or circuit breaker, a fuse switch-disconnector or circuit breaker must
be installed between the battery and the inverter which is able to securely switch off the short-circuit current of the
battery under fault conditions.
Cable requirements:
☐ If the battery storage system is continue to run in case of a ground fault on the AC low-voltage side (parameter
IsoErrIgn to On or to Run), the DC cables must be designed for voltages that arise due to pulsed mode of the
inverter. The maximum voltages to ground are as follows:
– For the Sunny Central Storage 500 / 630 / 720 / 760, the maximum voltage to ground is ±1250 V.
– For the Sunny Central Storage 800 / 850 / 900 / 1000, the maximum voltage to ground is ±1350 V.
☐ Use copper or aluminum cables only.
☐ The DC cables must be designed for the maximum battery voltage and must have double or reinforced insulation.
☐ Maximum cable cross-section: 400 mm2
☐ Terminal lug: M12
☐ Maximum number of cables per input and potential (+ and −): 4
☐ Maximum cable length: 30 m
Apart from the terminal lugs, all materials needed for the bolted connection for the AC connection and the DC
connection are included in the scope of delivery of the inverter.
Terminal lug requirements:
☐ Use tin-plated terminal lugs only.
☐ For the connection, only the supplied screws, washers and nuts must be used.
☐ The terminal lugs must be designed according to the temperature. Temperature: +95°C
☐ The width of the terminal lugs must exceed the washer diameter. Washer diameter: 32 mm. This will ensure that
the defined torques are effective over the whole surface.
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5.4.2
Connecting the DC Cables
497 mm
120 mm
C
95 mm
50 mm
419 mm
523 mm
401 mm
14 x 34 mm
30 mm
170 mm
200 mm
158 mm
B
264 mm
408 mm
83 mm
178 mm
406 mm
578 mm
A
574 mm
Figure 16: Dimensions of the DC busbar (example)
Position
Designation
A
Connection area of the DC+ cables
B
Connection area of the DC− cables
C
DC connection bracket with dimensions
Torques of the power connections:
Type of terminal lug
Torque
Tin-plated aluminum terminal lug on copper bar
37 Nm
Tin-plated copper terminal lug on copper bar
60 Nm
Tin-plated aluminum or copper terminal lug on aluminum bar
37 Nm
Additionally required mounting material (not included in the scope of delivery):
☐ Clean cloth
☐ Ethanol cleaning agent
Terminal assignment
• If only two cables are connected per potential, connect the cables to the left-hand and right-hand side of the
connection plate. This will prevent current asymmetries and overheating of the connection area.
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Procedure:
1. Disassemble the panels (see Section 11.2.1, page 102).
2. Disassemble the protective covers (see Section 11.2.2, page 103).
3. Prepare the cables for connection (see Section 11.3, page 106).
4. Clean the tin-plated contact surfaces in the connection area with the non-woven abrasive until they have a light
metallic sheen.
5. Clean all contact surfaces in the connection area using a clean cloth and ethanol cleaning agent and do not
touch the contact surfaces after cleaning.
6. Connect the cables in accordance with the circuit diagram. Only use the screws, nuts and washers included in the
scope of delivery and make sure that the screw heads always point forwards.
7. Secure the cables on the cable support rail. This will prevent the cable from being pulled out inadvertently.
8. Mount the protective covers (see Section 11.2.2, page 103).
9. Mount the panels (see Section 11.2.1, page 102).
5.5
Installing the AC Connection
Figure 17: Dimensions of the AC connection
Cable and cable laying requirements:
☐ The cables must be designed for the maximum voltages to ground.
For the Sunny Central Storage 500 / 630 / 720 / 760 / 800, the maximum voltage to ground is: ±1450 V.
For the Sunny Central Storage 850 / 900 / 1000, the maximum voltage to ground is: ±1600 V.
☐ The cables must be designed for the maximum root-mean-square value. Maximum root-mean-square value: 800 V.
☐ Do not attach more than four cables to each AC connecting plate.
☐ Use copper or aluminum cables only.
☐ Maximum cable cross-section: 300 mm².
☐ All line conductor cables must be of the same length and must not exceed the maximum cable length. The
maximum cable length is 15 m.
☐ The AC cables must be bundled in the three-phase system.
☐ Between the MV transformer and the inverter, three separate cable routes for the AC cables must be available,
e.g. cable channels.
☐ A line conductor L1, L2 or L3 must be laid in each cable channel. Ensure that the distance between the cable
bundles is at least twice the diameter of a cable. This will prevent current imbalances. Furthermore, it is
recommended to execute cabling between inverter and MV transformer directly on a grounding strap. This
measure further reduces electromagnetic influences.
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Figure 18: Arrangement of AC cables with three cables per line conductor (example)
Position
Designation
L1
Line conductor L1
L2
Line conductor L2
L3
Line conductor L3
A
Grounding strap
Torques of the power connections:
Type of terminal lug
Torque
Tin-plated aluminum terminal lug on copper bar
37 Nm
Tin-plated copper terminal lug on copper bar
60 Nm
Tin-plated aluminum or copper terminal lug on aluminum bar
37 Nm
Additionally required mounting material (not included in the scope of delivery):
☐ Clean cloth
☐ Ethanol cleaning agent
Procedure:
1. Disassemble the panels (see Section 11.2.1, page 102).
2. Disassemble the protective covers (see Section 11.2.2, page 103).
3. Prepare the cables for connection (see Section 11.3, page 106).
4. Clean the tin-plated contact surfaces in the connection area with the non-woven abrasive until they have a light
metallic sheen.
5. Clean all contact surfaces in the connection area using a clean cloth and ethanol cleaning agent and do not
touch the contact surfaces after cleaning.
6. Connect the cables in accordance with the circuit diagram. Only use the screws, nuts and washers included in the
scope of delivery and make sure that the screw heads always point forwards.
7. Secure the cables on the cable support rail. This will prevent the cable from being pulled out inadvertently.
8. Mount the protective covers (see Section 11.2.2, page 103).
9. Mount the panels (see Section 11.2.1, page 102).
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Connecting the Cables for Communication, Control, Supply Voltage
and Monitoring
5.6.1
Connecting Optical Fibers with Subscriber Connector
Figure 19: Position of the splice box
Position
Designation
A
Splice box
Additionally required mounting material (not included in the scope of delivery):
☐ 2 subscriber connectors
Damage to optical fibers due to too tight bend radii
Excessive bending or kinking will damage the optical fibers.
• Observe the minimum permissible bend radii of the optical fibers.
Procedure:
1. Disassemble the panels (see Section 11.2.1, page 102).
2. Insert the optical fibers in the inverter (see Section 11.1, page 102).
3. Remove the splice box from the top-hat rail:
4. Open the enclosure of the splice box.
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5. Insert the optical fibers from below through the cable gland
into the splice box.
6. Mount the subscriber connectors on the optical fibers.
7. Plug the subscriber connectors into the SC-P plugs in the splice box.
8. Coil the residual glass fiber in the fiber reservoir. Observe the
permissible bend radii.
9. Screw on the enclosure of the splice box.
10. Reinstall the splice box on the top-hat rail.
11. Attach the optical fibers to the cable support rail using a cable tie. This ensures that the optical fibers cannot be
pulled out inadvertently.
12. Mount the panels (see Section 11.2.1, page 102).
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Connecting Optical Fibers via Optical Fiber Pigtail
Figure 20: Position of the splice box
Position
Designation
A
Splice box
Optical fiber requirements:
☐ The optical fiber cables must be equipped with a 50 μm multi-mode optical fiber.
☐ The optical fibers must be fitted with a subscriber connector.
Damage to optical fibers due to too tight bend radii
Excessive bending or kinking will damage the optical fibers.
• Observe the minimum permissible bend radii of the optical fibers.
Procedure:
1. Disassemble the panels (see Section 11.2.1, page 102).
2. Insert the optical fibers in the inverter (see Section 11.1, page 102).
3. Remove the splice box from the top-hat rail:
4. Open the enclosure of the splice box.
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5. Insert the optical fibers from below through the cable gland
into the splice box.
6. Splice the optical fibers with the optical fiber pigtails in the splice box.
7. Plug the subscriber connectors into the SC-P plugs in the splice box.
8. Coil the residual glass fiber in the fiber reservoir. Observe the
permissible bend radii.
9. Screw on the enclosure of the splice box.
10. Reinstall the splice box on the top-hat rail.
11. Attach the optical fibers to the cable support rail using a cable tie. This ensures that the optical fibers cannot be
pulled out inadvertently.
12. Mount the panels (see Section 11.2.1, page 102).
5.6.3
Connecting the Network Cables
Network cable requirements:
☐ The network cables must be shielded and pair-twisted.
☐ The network cables must be of at least category 5 (CAT 5).
☐ Maximum cable length: 100 m
Procedure:
1. Disassemble the panels (see Section 11.2.1, page 102).
2. Insert the network cables (see Section 11.1, page 102).
3. Insert the network cables into the network ports.
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4. Attach the network cables to the cable support rail using a cable tie. This will prevent the network cables from
being pulled out inadvertently.
5. Mount the panels (see Section 11.2.1, page 102).
5.6.4
Connecting the Cable for the External Fast Stop
If required, you can connect an external fast stop in accordance with the circuit diagram. The fast stop can be
operated by means of an internal or external supply voltage.
Shortfall of external supply voltage
If there is an external supply voltage between 18.5 V to 24.0 V, the inverter will continue to operate in its current
operating state. If the external supply voltage falls below 18.5 V, the inverter switches from the current operating
state to the operating state "Stop". If the temperature inside the inverter exceeds the temperature limit, a supply
voltage of 20.0 V to 24.0 V must be present to continue operating the inverter in its current operating state.
Temperature limit: +60°C
• Ensure that the external supply voltage is between 20.0 V and 24.0 V.
Cable requirement:
☐ The cable used must be shielded.
Additional cable requirements for internal supply voltage:
☐ Maximum cable length with cable cross-section: 130 m / 2.5 mm²
☐ Maximum cable length with cable cross-section: 80 m / 1.5 mm²
Requirements:
☐ A switch must be used that can interrupt the supply voltage.
Battery System Controller in the fast-stop chain
By default, the Battery System Controller is prepared for an integration into the fast-stop chain. This allows the
Battery System Controller to switch off the inverter under fault conditions. When wiring the fast-stop chain, observe
the circuit diagram.
Procedure:
1. Disassemble the panels (see Section 11.2.1, page 102).
2. Insert the cables (see Section 11.1, page 102).
3. Connect the cables in accordance with the circuit diagram (see Section 11.4, page 111).
4. Secure the cables on the cable support rail. This will prevent the cables from being pulled out inadvertently.
5. Mount the panels (see Section 11.2.1, page 102).
5.6.5
Connecting the Cable for Remote Shutdown
The remote shutdown enables the inverter to be switched off from a distance, e.g. from a control room. The function of
the remote shutdown is similar to the stop function of the key switch.
Shortfall of external supply voltage
If there is an external supply voltage between 18.5 V to 24.0 V, the inverter will continue to operate in its current
operating state. If the external supply voltage falls below 18.5 V, the inverter switches from the current operating
state to the operating state "Stop". If the temperature inside the inverter exceeds the temperature limit, a supply
voltage of 20.0 V to 24.0 V must be present to continue operating the inverter in its current operating state.
Temperature limit: +60°C
• Ensure that the external supply voltage is between 20.0 V and 24.0 V.
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Procedure:
1. Disassemble the panels (see Section 11.2.1, page 102).
2. Insert the cables (see Section 11.1, page 102).
3. Connect the cables in accordance with the circuit diagram (see Section 11.4, page 111).
4. Secure the cables on the cable support rail. This will prevent the cables from being pulled out inadvertently.
5. Mount the panels (see Section 11.2.1, page 102).
5.6.6
Connecting the Cable for the Status Report of the Insulation Monitoring
Status report
The switching status can be queried via a contact. For details of terminal assignment, see circuit diagram.
Requirements:
☐ The connected load must operate with a voltage of 230 VAC or 24 VDC.
☐ The connected load must draw a current of 10 mA to 6 A.
Procedure:
1. Disassemble the panels (see Section 11.2.1, page 102).
2. Insert the cables (see Section 11.1, page 102).
3. Connect the cables in accordance with the circuit diagram (see Section 11.4, page 111).
4. Secure the cables on the cable support rail. This will prevent the cables from being pulled out inadvertently.
5. Mount the panels (see Section 11.2.1, page 102).
5.6.7
Connecting the Cable for the Supply Voltage
The inverter must be connected to an external, three-phase supply voltage with 230 V line voltage/400 V line-to-line
voltage (3/N/PE) per line conductor.
Circuit breaker between the external supply voltage and the inverter
A type-B circuit breaker with a rated current of 16 A is installed in the inverter.
• Provide a selective circuit breaker for insulating the cable to the inverter.
Cable requirements:
☐ The cable used must be shielded.
☐ Maximum conductor cross-section:4 mm².
Failure of the inverter due to incorrect connection of the internal power supply
If the internal power supply is not properly connected, the residual-current device in the inverter may trip and put the
inverter is no longer ready for operation. This can result in financial damage due to yield loss.
• Connect the neutral conductor N.
• Ground the neutral point of the internal power supply transformer.
Procedure:
1. Disassemble the panels (see Section 11.2.1, page 102).
2. Insert the cables (see Section 11.1, page 102).
3. Connect the cables in accordance with the circuit diagram (see Section 11.4, page 111).
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4. Secure the cables on the cable support rail. This will prevent the cables from being pulled out inadvertently.
5. Mount the panels (see Section 11.2.1, page 102).
5.6.8
Connecting the Cable for the Status Report of the AC Contactor Monitoring
Status report
The switching status can be queried via a contact. For details of terminal assignment, see circuit diagram.
Requirements:
☐ The connected load must operate with a voltage of 230 VAC or 24 VDC.
☐ The connected load must draw a current of 10 mA to 6 A.
Procedure:
1. Disassemble the panels (see Section 11.2.1, page 102).
2. Insert the cables (see Section 11.1, page 102).
3. Connect the cables in accordance with the circuit diagram (see Section 11.4, page 111).
4. Secure the cables on the cable support rail. This will prevent the cables from being pulled out inadvertently.
5. Mount the panels (see Section 11.2.1, page 102).
5.6.9
Connecting the Transformer Protection
The inverter is equipped with a terminal for monitoring the MV transformer. Under fault conditions, the inverter is
immediately switched off. To use the transformer monitoring, an external supply voltage of 230 VAC must be provided
in the MV transformer.
Cable requirement:
☐ The cable used must be shielded.
Procedure:
1. Disassemble the panels (see Section 11.2.1, page 102).
2. Insert the cables (see Section 11.1, page 102).
3. Connect the cables in accordance with the circuit diagram (see Section 11.4, page 111).
4. Secure the cables on the cable support rail. This will prevent the cables from being pulled out inadvertently.
5. Mount the panels (see Section 11.2.1, page 102).
5.6.10 Connecting Digital Inputs and Outputs
The cables for signals between the Battery Management System and the Battery System Controller are connected at
the terminal of the digital inputs and outputs. For details of terminal assignment, see the circuit diagram.
OK
Function
Digital outputs
Tripping of the fast-stop chain via Battery System Controller
Cable requirement:
☐ The cable used must be shielded.
☐ Maximum conductor cross-section: 2.5 mm2
Additional cable requirements for internal supply voltage:
☐ Maximum cable length with cable cross-section: 130 m / 2.5 mm²
☐ Maximum cable length with cable cross-section: 80 m / 1.5 mm²
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Procedure:
1. Disassemble the panels (see Section 11.2.1, page 102).
2. Insert the cables (see Section 11.1, page 102).
3. Connect the cables in accordance with the circuit diagram (see Section 11.4, page 111).
4. Secure the cables on the cable support rail. This will prevent the cables from being pulled out inadvertently.
5. Mount the panels (see Section 11.2.1, page 102).
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Disconnecting and Reconnecting
6.1
Safety When Disconnecting and Reconnecting Voltage Sources
Danger to life from electric shock due to live voltage
High voltages are present in the live components of the product. Touching live components results in death or serious
injury due to electric shock.
• Wear suitable personal protective equipment for all work on the product.
• Do not touch any live components.
• Observe all warning messages on the product and in the documentation.
• Observe all safety information of the battery manufacturer.
• Before any work is performed, always disconnect the following devices externally:
– Grid voltage for grid feed-in
– Internal power supply
– DC voltage of the battery
– Additional external voltages, e.g. control signals from a control room
• Ensure that no disconnected devices can be reconnected.
• After switching off the inverter, wait at least 15 minutes before opening it to allow the capacitors to discharge
completely.
• Before working on the inverter, make sure that all devices are completely voltage-free.
• Cover or isolate any adjacent live components.
Danger to life due to high short-circuit current in the battery
Despite careful construction, a short circuit may occur in the inverter under fault conditions. In case of a short circuit in
the inverter, the connected battery can supply a very high short-circuit current. The resulting electric arc and pressure
wave lead to death or serious injuries.
• Install the inverter in a closed electrical operating area.
• Always close and lock the inverter.
• Before entering the operating area, externally disconnect the inverter on the AC and DC side.
• Only open the inverter when it is completely disconnected and the capacitors are fully discharged.
Danger to life from electric shock due to ground fault
If there is a ground fault, system components that are supposedly grounded may in fact be live. Touching incorrectly
grounded components results in death or serious injuries from electric shock.
• Before working on the system, ensure that no ground fault is present.
• Wear suitable personal protective equipment for all work on the product.
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Danger to life from electric shock when entering the storage system
Damaged insulation in the storage system can cause lethal ground currents. Lethal electric shocks can result.
• Ensure that the insulation resistance of the storage system exceeds the minimum value. The minimum value of the
insulation resistance is: 14 kΩ.
• Before entering the storage system, switch the system with the ground fault detection system (GFDI or
Remote GFDI) to insulated operation.
• The inverter must be installed in a closed electrical operating area.
Connect and disconnect the AC voltage of the MV transformer
Only a duly authorized person is allowed to connect and disconnect the AC voltage of the MV transformer.
6.2
6.2.1
Disconnecting the Inverter
Disconnecting the DC and AC Side
1. Switch the inverter via the control room to Stop.
2. Disconnect the battery voltage at the external fuse switch-disconnector or circuit breaker and secure against
reconnection.
3. Externally disconnect the AC voltage of the MV transformer.
4. Enter the operating area of the inverter.
5. Turn the key switch to Stop.
6. Remove the key. This will protect the inverter from inadvertent reconnection.
7. Wait 15 minutes before opening the doors. This allows the inverter capacitors to discharge.
8. Ensure that no voltage is present on both sides of the DC switchgear.
9. Cover or isolate any adjacent live components.
10. Switch off the AC disconnection unit in the inverter.
11. Ensure that no voltage is present.
12. Cover or isolate any adjacent live components.
6.2.2
Disconnecting the Supply Voltage at the Inverter from Voltage Sources
1. If the supply voltage is only to be disconnected upstream from
the circuit breaker, switch the circuit breaker of the supply
voltage off.
2. If the supply voltage is also to be disconnected downstream from the supply voltage circuit breaker, switch the
external circuit breaker of the supply voltage off.
Tip: The external circuit breaker of the supply voltage is usually located in a subordinate distribution station.
3. Disconnect any additional external voltage.
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4. Switch the motor-protective circuit-breakers of the grid
monitoring off.
5. Open the measurement and disconnect terminals.
6. Ensure that no voltage is present.
7. Cover or isolate any adjacent live components.
6.3
6.3.1
Reconnecting the Inverter
Reconnecting the Supply Voltage at the Inverter
1. Close the measurement and disconnect terminals.
2. Switch on the motor-protective circuit-breakers of the grid
monitoring.
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3. Connect any additional external voltage.
4. If the supply voltage has been disconnected downstream from the circuit breaker, switch the external circuit
breaker of the supply voltage on.
Tip: The external circuit breaker of the supply voltage is usually located in a subordinate distribution station.
5. If the supply voltage has been disconnected upstream from the
circuit breaker, switch the circuit breaker of the supply voltage
on.
6.3.2
Reconnecting the DC and AC Side
1. Switch on the AC disconnection unit in the inverter.
2. Close and lock the inverter.
3. Turn the key switch to Start.
4. Leave the operating area of the inverter.
5. Reconnect the AC voltage of the MV transformer.
6. Externally connect the battery voltage.
7. Approve the start of the inverter via the control room.
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Operation
7.1
Safety during Operation
Disturbance of the battery operation due to incorrectly set parameters
If the parameter settings for grid management services are incorrect, the battery may not be able to meet the
requirements of the grid operator.
• When setting the modes of grid management services, ensure that the control procedures agreed with the grid
operator are parameterized.
7.2
Information on Settings
The Sunny Central Storage has two communication units: BSC and SC-COM. The BSC is the communication interface
of the inverter to the battery management system, the Fuel Save Controller or the SCADA system. The SC-COM
provides for correct communication between the BSC and the inverter.
In a master-slave operation, two Sunny Central Storage devices are connected to one battery. In this case, one inverter
takes on a superordinate role and is the master inverter. The other inverter takes on a subordinate role and is the slave
inverter. The BSC in the master inverter controls the master inverter and the slave inverter.
BSC of the slave inverter
The inverters are delivered with BSC as standard. In master-slave operation, the BSC of the slave inverter should
be switched off. You will find further information on this in the Service Instructions "Design of a Master-Slave
System With Two Inverters SUNNY CENTRAL STORAGE 500 / 630 / 720 / 760 / 800 / 850 / 900 / 1000".
Planning IP addresses for network nodes
In order that communication between the communication units of the inverter and between other nodes functions
correctly, the IP addresses must be set correctly. During the planning phase, make sure that the IP address range
192.168.100.xxx is reserved for internal devices and thus cannot be used.
For further information on the requirements and possibilities of the system communication, see the Technical
Information "Plant Communication in Large-Scale PV Power Plants".
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Figure 21: System network with inverters in master-slave operation
Settings on the user interface of the Battery System Controller and SC-COM
Communication unit
Settings
BSC
SC-COM
System settings such as date, time and password
✓
✓
Battery parameters
✓
✖
Power setpoint
✓
✖
Frequency-dependent active power control
✖
✓
Grid-voltage-dependent active power control
✖
✓
Inverter behavior in the event of communication disturbances
✖
✓
Insulation monitoring
✖
✓
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SMA Solar Technology AG
Configuring Network Settings
7.3.1
Information on Integrating the Inverter into a Local Network
Protecting the local network from cyber attacks
• If the local network is to be accessible via the Internet, you can set up port forwarding via your router or
configure a VPN. Using a VPN is recommended.
• Protect the local network from cyber attacks by means of suitable safety measures such as setting up a
firewall and allocating secure passwords.
Using a static IP address is recommended. You can select the IP address yourself. Use the address range which is
available to your router. If necessary, refer to the router manual.
For further information on this subject, see the Technical Information "System Communication in Large-Scale PV Power
Plants" at www.SMA-Solar.com.
7.3.2
Configuring the Network Settings on the Computer
Before you can access the user interface with your computer, you must adapt the network settings of your computer.
The default IP address of the BSC is 172.16.1.111. The subnet mask is 255.255.0.0. If the network settings of the
Battery System Controller are changed after commissioning, the new network settings must be used.
Administrator rights in the operating system
To commission the communication unit, you need to have the appropriate administrator rights to change the
network settings of the computer.
• Contact your network administrator if you are uncertain about administrator rights.
Procedure:
1. Note down the IP address of the computer.
2. Adapt the IP address of the computer to the address range of the communication unit.
7.3.3
Configuring Network Settings
Configuring the network settings on the BSC
1. Log into the Battery System Controller user interface (see Section 11.6.1, page 113).
2. Select SCS > Settings > IP Config.
3. In the field BSC, configure the required network settings for the Battery System Controller.
4. In the fields Inverter 1 and Inverter 2, enter the required IP addresses of the inverters.
5. In the field BMS, enter the required IP address of the Battery Management System, and in the drop-down list
Protocol, select the corresponding communication protocol.
6. Select the button [Save as default] or [Apply] (see Section 7.5.1, page 60).
Configuring the network settings on the SC-COM
1. Log into the SC-COM user interface (see Section 11.6.1, page 113).
2. Select Sunny Central > Settings > Network.
3. In the field IP address, enter the static IP address that you want to use to access the inverter in the local network.
4. Enter the subnet mask of your network in the field Subnet mask.
5. Enter the gateway IP address of your network in the field Gateway address. Usually, the IP address of the
router has to be entered here.
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6. Enter the IP address of the DNS server (Domain Name System) in the field DNS server address. Usually, the IP
address of the router has to be entered here.
7. Select the button [Save].
8. Select the button [Confirm].
7.4
Configuring System Settings
7.4.1
Changing the System Settings via the User Interface
7.4.1.1
Setting the Date, Time and Time Zone
For the time setting, you can choose between entering the date and time manually or having the time settings entered
from a time server.
Procedure:
1. To configure time settings on the BSC, perform the following steps:
• Log into the user interface (see Section 11.6.1, page 113).
• Select SCS > Settings > Date/Time.
• In the field Time Server, check the IP address of the time server and reenter if necessary.
• Select the button [synchronize with NTP server].
• To adjust the time zone, select the appropriate time difference to UTC in the drop-down list in the field Time
Zone.
• To manually configure the date and time, make the appropriate settings in the area Date and Time.
• To activate the automatic changeover between summer/wintertime, activate the option Daylight saving
time.
• To complete the time settings, select the button [Set Date and Time].
2. To configure time settings on the SC-COM, perform the following steps:
• Log into the user interface (see Section 11.6.1, page 113).
• Select Sunny Central > Settings > System.
• In the field Time zone (UTC offset), select the button [Change].
• Select the correct time zone in the Time zone (UTC offset) drop-down list.
• Select an option in the Automatic change from summer time to winter time field:
Option
Explanation
yes
Automatic change from daylight saving time to standard time is active.
no
Automatic change from daylight saving time to standard time is not active. Date and
time have to be set manually.
• Enter the current date in the New date field.
• Enter the current time in the New time field.
• Select the button [Save].
7.4.1.2
Changing the Password for the User Groups
To change the password for the "Installer" and "User" user groups, you must be logged in as an installer.
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Procedure:
1. Log into the user interface (see Section 11.6.1, page 113).
2. Select SCS > Settings > Access Control.
3. To change the "User" password:
• Enter the new password in the fields Set new user password and Confirm password, pressing the enter
key in each case.
• Select the button [Save].
4. To change the "Installer" password:
• Enter the new password in the fields Set new installer password and Confirm password, pressing the
enter key in each case.
• Select the button [Save].
7.4.1.3
Exporting, Importing and Resetting the Configuration
To save the configured network- and parameter settings prior to resetting, you can export the configuration. You can
use a USB flash drive or the internal memory of the Battery System Controller as the storage medium.
Procedure:
1. Log into the Battery System Controller user interface (see Section 11.6.1, page 113).
2. Select SCS > Backup.
3. To export the configuration:
• In the area Export, select the options for the export.
• In the area Device, select the medium to which the configuration is to be exported.
• Select the button [Export].
☑ The message Do you want to overwrite these export settings? appears.
• Select the button [Yes].
4. To import the configuration:
• In the area Import, select the options for the import.
• In the area Device, select the medium from which the configuration is to be imported.
• Select the button [Import].
☑ The message Do you want to overwrite import settings? appears.
• Select the button [Yes].
5. To reset the Battery System Controller to the default settings:
• Select the button [Factory Settings].
☑ The message Do you want to reset the system to factory settings? appears.
• Select the button [Yes].
7.4.1.4
Changing the System Name
To facilitate identification of your system, you can enter the name of your system. This name then appears in the
navigation bar first level instead of My Plant.
Procedure:
1. Log into the user interface (see Section 11.6.1, page 113).
2. Select SCS > Overview.
3. In the field Station name, enter the name of the system and press the enter key.
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7.4.2
7.4.2.1
Changing System Settings via Touch Display
Selecting the Language
1. Select
.
2. Select
.
3. Use the country symbol to select the language.
4. Confirm your entry by selecting
7.4.2.2
.
Setting the Date, Time and Time Zone
Inverter adopts changes
The inverter will adopt date, time or time zone changes made via the display.
Procedure:
1. Select
.
2. Select
.
3. To change the date, select the day, month and year in the field
month and year.
. Use the
4. To change the time, select the hours, minutes and seconds in the field
minutes and seconds.
5. To change the time zone, select a time zone in the field
6. Confirm your entry by selecting
7.4.2.3
. Use the
. Use
and
and
and
buttons to change the day,
to change the hours,
buttons to change the time zone.
.
Selecting the Display Format
1. Select
.
2. Select
.
3. Select the date format.
4. Select the hour format.
5. Select the number format.
6. Confirm your entry by selecting
7.4.2.4
.
Setting the Brightness
1. Select
.
2. Select
.
3. Set the display brightness. Select
4. Confirm your entry by selecting
Operating Manual
for a darker screen or
for a lighter screen.
.
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SMA Solar Technology AG
Parameter Settings
7.5.1
Information on Setting Parameters
There are two buttons available for saving parameter settings on the BSC:
Button
Description
[Apply]
Parameter settings must be confirmed via the button [Apply] in order that they are adopted.
The settings are not, however, saved permanently and are lost when the BSC is restarted. Parameter values, for example, can therefore be tested.
[Save as default]
Parameter settings will only be applied and saved if they are confirmed by clicking the [Save
as default] button. Even after the BSC is restarted, these parameter values are kept. To reset
the saved parameter values, the default settings must be restored (see Section 7.4.1.3 "Exporting, Importing and Resetting the Configuration", page 58).
7.5.2
Setting the Power Control
7.5.2.1
Specifying Setpoints
There are two methods of specifying the setpoints for the active- and reactive power via the Battery System Controller
on the inverter:
• automatically via the Fuel Save Controller or a SCADA system via Modbus interface
• manually via the Battery System Controller user interface
Setpoints via the Fuel Save Controller or a Modbus interface will be ignored
If you specify the setpoints via the user interface, the setpoints specified via the Modbus interface or the Fuel Save
Controller will be ignored.
• To end manual setpoint, in the area Data Source Selection, select the option External settings by FSC.
Procedure:
1. Log into the Battery System Controller user interface (see Section 11.6.1, page 113).
2. If the inverter is to receive the setpoints via the Fuel Save Controller or a SCADA system via Modbus interface,
perform the following steps:
• Select SCS > Functions > Data Source.
• In the area Data Source Selection, select the option External settings by FSC.
• Select the button [Save as default] or [Apply] (see Section 7.5.1, page 60).
3. If the inverter is to receive the setpoints specified via the user interface, perform the following steps:
• Select SCS > Functions > Data Source.
• In the area Data Source Selection, select the option Local settings by web interface.
• Select the button [Save as default] or [Apply] (see Section 7.5.1, page 60).
4. To configure the setpoints, perform the following steps:
• Select SCS > Functions > Power Setpoints.
• In the field Setpoint for the parameter Active power [kW], enter the setpoint for the active power in kW.
• In the field Setpoint for the parameter Reactive power [kVAr], enter the setpoint for the active power in
kVAr.
• To activate the setpoint, activate the checkbox Enable.
• Select the button [Save as default] or [Apply] (see Section 7.5.1, page 60).
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7.5.2.2
Setting the Frequency-Dependent Active Power Control
With frequency-dependent active power control, the inverter continually checks the connected power frequency and
changes the power in accordance with the frequency deviations. To control the behavior of the inverter in the event of
power frequency deviations, a characteristic curve with eight support points is configurable. These support points can
be configured on the SC-COM user interface.
The ratio of the current power frequency to the nominal frequency must be entered on the X axis in percent. At 100%,
the power frequency is equal to the nominal frequency of the configured utility grid.
The ratio of the power change in relation to the nominal power of the inverter must be entered on the Y axis in percent.
The power change will be added to the current setpoint.
The parameter Offset can be used if the reference point of the characteristic curve deviates from the grid voltage. This
parameter can be configured in manual operation on the BSC user interface. In automatic operation, the offset can be
configured via the Modbus interface by the FSC or SSC.
ΔP / Pnom [%]
1
100
2
75
50
Offset
3
25
98
98.5
99
4
5
99.6
100.4
−25
101
101.5
102
Δf / fnom [%]
6
−50
−75
7
−100
8
Figure 22: Characteristic curve for the frequency-dependent active power control (example)
Example: Configuring the characteristic curve for overfrequency:
If the limits for the power reduction in the event of overfrequency are to be 50.2 Hz and 51 Hz, the support points 5
and 8 have to be set as follows:
Support point 5 - the point above which the power is to be reduced:
• x: 100.4% (equates to 50.2 Hz with the nominal frequency of 50 Hz)
• y: 0% (as yet no power change)
Support point 8 - the point at which the inverter must reduce the power by 100%:
• x: 102% (equates to 51 Hz with the nominal frequency of 50 Hz)
• y: ‒100% (power reduction)
Support points 6 and 7 can be used to make the characteristic curve steeper (see example diagram between
support points 6 and 7) or flatter (see example diagram between support points 5 and 6 or 7 and 8).
If the reference point of the characteristic curve is 51 Hz, the parameter Offset can be set to 102%. In this case the
dotted line in the example diagram applies.
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Procedure:
1. Log into the SC-COM user interface (see Section 11.6.1, page 113).
Information: The current IP address for the SC-COM can be looked up in the BSC user interface under SCS >
Settings > IP Config in the field Inverter 1 or Inverter 2.
2. Select Data > Devices > Parameters.
3. Configure the 8 support points for each axis:
Parameter
Explanation
P_HzxValn
Frequency value as a percentage of the nominal frequency at support point n of the P(f) characteristic curve
P_HzyValn
Value of the power change at support point n of the P(f) characteristic curve
4. Select the button [Save].
5. To configure the parameter Offset in manual operation, perform the following steps:
• Log into the BSC user interface (see Section 11.6.1, page 113).
• Select SCS > Functions > Droops.
• Select the button [P(f)].
• In the field Offset, set the parameter to the desired value in percent.
• To activate the frequency-dependent active power control in manual operation, activate the checkbox
Enable Droops.
• Select the button [Save as default] or [Apply] (see Section 7.5.1, page 60).
7.5.2.3
Setting the Grid Voltage-Dependent Reactive Power Control
With grid voltage-dependent reactive power control, the inverter continually checks the connected grid voltage and
changes the power in accordance with the voltage deviations. To control the behavior of the inverter in the event of
grid voltage deviations, a characteristic curve with eight support points is configurable. These support points can be
configured on the SC-COM user interface.
The ratio of the current grid voltage to the grid voltage must be entered on the X axis in percent. At 100%, the grid
voltage is equal to the grid voltage of the utility grid.
The ratio of the power change in relation to the nominal power of the inverter must be entered on the Y axis in percent.
The power change will be added to the current setpoint.
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The parameter Offset can be used if the reference point of the characteristic curve deviates from the nominal voltage.
This parameter can be configured in manual operation on the BSC user interface. In automatic operation, the offset
can be configured via the Modbus interface by the FSC or SSC.
ΔQ / Qnom [%]
1
100
2
75
50
Offset
3
25
85
90
95
4
5
98
102
−25
105
110
115
ΔV / Vnom [%]
6
−50
−75
7
−100
8
Figure 23: Characteristic curve for frequency-dependent reactive power control (example)
Procedure:
1. Log into the SC-COM user interface (see Section 11.6.1, page 113).
Information: The current IP address for the SC-COM can be looked up in the BSC user interface under SCS >
Settings > IP Config in the field Inverter 1 or Inverter 2.
2. Select Data > Devices > Parameters.
3. Configure the 8 support points for each axis:
Parameter
Explanation
Q_VxValn
Voltage value as a percentage of the nominal voltage at support point n of the Q(U) characteristic curve
Q_VyValn
Value of the power change at support point n of the Q(U) characteristic curve
4. Select the button [Save].
5. To configure the parameter Offset in manual operation, perform the following steps:
• Log into the BSC user interface (see Section 11.6.1, page 113).
• Select SCS > Functions > Droops.
• Select the button [Q(U)].
• In the field Offset, set the parameter to the desired value in percent.
• To activate the grid voltage-dependent reactive power control in manual operation, activate the checkbox
Enable Droops.
• Select the button [Save as default] or [Apply] (see Section 7.5.1, page 60).
7.5.3
Setting the Inverter Behavior in the Event of Communication Disturbances
A communication disturbance can occur between the SC-COM and the Battery System Controller as well as between
the Battery System Controller and other nodes such as the Battery Management System or Fuel Save Controller. How
the inverter behaves in the event of communication disturbances can be set via the SC-COM user interface.
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The Deadlink behavior becomes active one second after communication failure. Here, the inverter disconnects
immediately or follows the behavior set in the parameter BscDeaLnkBeh. If the communication remains disturbed after
the time set in the parameter DeaLnkTmOutErr, the inverter disconnects regardless of the behavior selected.
Procedure:
1. Log into the SC-COM user interface (see Section 11.6.1, page 113).
Information: The current IP address for the SC-COM can be looked up in the BSC user interface under SCS >
Settings > IP Config in the field Inverter 1 or Inverter 2.
2. Select Data > Devices > Parameters.
3. You can configure the inverter's behavior in the event of a communication disturbance in the parameter
DeaLnkBeh:
Parameter
Explanation
---
The inverter remains in the current operating state and continues to feed into the grid in
accordance with the last setpoints.
Off
Power will be regulated to 0 kW. The inverter switches to the operating state "Stop".
Droops
The inverter continues feeding into the grid only in accordance with the active P(f) or
Q(U) characteristic curve. The setpoints will not be taken into consideration.
Predefined
Use predefined setpoints.
4. If the parameter DeaLnkBeh is set to Predefined, you will have to set the inverter operating mode in the event of
a communication disturbance along with the required setpoints in the parameter PreCtrlMod:
Parameter
Explanation
PQ-set
Active power is set using the setpoints from the parameter PrePwrAtSpnt.
Reactive power is set using the setpoints from the parameter PrePwrRtSpnt.
IQ-set
DC current is set using the setpoints from the parameter PreDcCurSpnt.
Reactive power is set using the setpoints from the parameter PrePwrRtSpnt.
UQ-set
DC voltage is set using the setpoints from the parameter PreDcVtgSpnt.
Reactive power is set using the setpoints from the parameter PrePwrRtSpnt.
Silent
The inverter stops feeding power into the grid. The AC disconnection unit and the DC
switchgear remain closed.
Faststop
The inverter performs a fast stop and disconnects from the utility grid.
5. If the parameter DeaLnkBeh was set to Droops, you will have to set the default values in the parameters
PreDrpF0 and PreDrpU0.
6. In the parameter DeaLnkTmOutErr, set the duration of this behavior in seconds.
7. Select the button [Save].
7.5.4
Setting the Battery Type
1. Log into the Battery System Controller user interface (see Section 11.6.1, page 113).
2. Select [SCS > Settings > System].
3. In the area Battery configuration, select the desired battery type from the drop-down list Battery Type.
4. Select the button [Save as default] or [Apply] (see Section 7.5.1, page 60).
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7.5.5
Setting Inverter Parameters for the Storage System
1. Log into the Battery System Controller user interface (see Section 11.6.1, page 113).
2. Select [SCS > Settings > System].
3. In the area BSC Configuration, set the following parameters to the desired values:
Parameter
Unit
Default value Explanation
Zero Power offset
Inv 1 / 2
[kW]
‒3.0 kW
Offset parameter for inverter 1 / 2 at an active power specification of 0 kW.
Through the self-consumption of the inverter, at a power
specification of 0 kW, power will be drawn from the battery
AC-side. This would lead to a small but possibly unwanted
electric discharge of the battery. With the offset, the power
necessary for self-consumption will be drawn from the AC
utility grid, therefore avoiding an electric discharge of the
battery. Premature aging of the battery will therefore be prevented. Where necessary, this value can be adjusted during
commissioning.
Start value for
power derating
caused by DC [V]
[V]
5.0 V
In master-slave operation it is necessary when the maximum
DC voltage is reached that the inverters work together in a
coordinated manner. This offset ensures that one of the inverters disconnects just before the maximum voltages are
reached. The other inverter will then continue to charge the
battery alone. Undesired circular currents will therefore be
safely avoided. Where necessary, this value can be adjusted
during commissioning.
Hysteresis value for
power derating
caused by DC [V]
[V]
3.0 V
This parameter determines at which voltage the inverter that
has disconnected due to the maximum voltage being
reached reconnects.
Inverter Config
‒
Inv 1 + 2
Setting determining whether there is one individual inverter in
the storage system or two inverters working in a master-slave
operation.
For a correct initialization of the communication, the BSC
should be restarted after changing this setting.
Inverter to start
‒
Inv 1
Setting determining which inverter must start first. Recommended setting: Auto
Power prioritization
‒
Active Power
Prioritization of reactive power or active power
Power allocation
‒
Equi
Setting determining how the power is to be distributed between both inverters in master-slave operation:
• Equi: the power is distributed equally.
• Optimal: inverter 1 takes on the complete power;
inverter 2 is only started if the demand is greater.
• Manual: manual power allocation.
4. Select the button [Save as default] or [Apply] (see Section 7.5.1, page 60).
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Example for disconnection- and reconnection thresholds:
At a maximum voltage of 800 V and an offset configured in the parameter Start value for power derating
caused by DC [V] of 5, the disconnection threshold for the second inverter is 795 V (800 V - 5 V). If the offset in
the parameter Hysteresis value for power derating caused by DC [V] is set to 3, the reconnection threshold for
the second inverter will be 792 V (800 V - 5 V - 3 V).
7.6
Displaying Operating Data via the User Interface
In the menu "My Plant", you will see an overview of the current data of the system. In addition, on the user interface
you can have the operating data, the current status of the battery and the operating data of the individual inverters
displayed.
Procedure:
1. To display the overview of the system, select the button [My Plant].
2. To display further device information, select SCS > Overview.
3. To display the measured values of the inverters, select SCS > Measurements > Inverter.
4. To displayed the measured values of the battery, select SCS > Measurements > Battery.
5. To display the battery status, select SCS > Functions > Battery Status.
7.7
7.7.1
7.7.1.1
Changing the Insulation Monitoring
Insulation Monitoring with GFDI and Insulation Monitoring Device
Safety with insulation monitoring with GFDI and insulation monitoring device
Danger to life from electric shock due to live voltage
High voltages are present in the conductive components of the inverter. Touching live components results in death or
serious injury due to electric shock.
• After switching off the inverter, wait at least 15 minutes before opening it to allow the capacitors to discharge
completely.
• Wear suitable personal protective equipment for all work on the product.
• All work must be carried out in accordance with this document. All safety information must be observed.
• Do not touch any live components of the inverter or the medium-voltage grid. Comply with all applicable safety
regulations for handling medium-voltage grids.
Ground-fault monitoring with GFDI does not provide protection from personal injury.
The order option "GFDI and insulation monitoring device" allows you to manually switch the storage system from
grounded operation to insulated operation. To ensure that there is no insulation error on the grounded terminal, an
insulation measurement is carried out. After switching to insulated operation, the insulation monitoring device checks all
poles of the storage system for potential insulation errors. Switching to insulated operation is useful, for example, when
maintenance or service work is to be carried out on or near the system (e.g. cutting the grass) or for checking the status
of the insulation at regular intervals. After completion of the maintenance work, the storage system must be switched
back to grounded operation.
7.7.1.2
Switching to Insulated Operation
1. Turn the key switch to Stop.
2. Wait 15 minutes before opening the inverter. This will ensure that the capacitors are discharged.
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3. Disconnect the circuit breaker of the GFDI manually.
4. Close the inverter.
5. Turn the key switch to Start.
☑ The insulation monitoring device starts collecting data. If the parameter IsoErrIgn is set to On, the error
3504 ‒ Insulation failure ignored is displayed.
✖ After 15 minutes, the displayed error 3504 does not disappear?
The insulation is defective.
• Have the insulation checked and, if necessary, repaired by a qualified person.
• Acknowledge the error.
6. Log into the user interface (see Section 11.6.1, page 113).
7. Wait a few minutes and then call up the instantaneous value Riso on the user interface.
☑ The insulation resistance is greater than 45 kΩ. It is safe to enter the PV system.
✖ The insulation resistance is less than 45 kΩ?
There is an insulation error and you must not enter the PV system.
• Have the insulation checked and, if necessary, repaired by a qualified person.
7.7.1.3
Switching to Grounded Operation
1. Turn the key switch to Stop.
2. Wait 15 minutes before opening the inverter. This will ensure that the capacitors are discharged.
3. Manually switch on the GFDI circuit breaker.
4. Close the inverter.
5. Turn the key switch to Start.
7.7.2
7.7.2.1
Insulation Monitoring with Remote GFDI and Insulation Monitoring Device
Information on the Insulation of the Battery with Remote GFDI and Insulation
Monitoring Device
Ground-fault monitoring does not provide protection from personal injury. Ground-fault monitoring and the insulation
monitoring device enable the battery to be switched automatically from grounded operation to insulated operation. To
ensure that there is no insulation error on the grounded terminal, an insulation measurement is carried out. After
switching to insulated operation, the insulation monitoring device checks all poles of the battery for potential insulation
errors. Switching to insulated operation is useful, for example, when maintenance or service work is to be carried out
on or near the system (e.g. cutting the grass) or for checking the status of the insulation at regular intervals.
7.7.2.2
Switching to Insulated Operation
1. Log into the user interface (see Section 11.6.1, page 113).
2. Set the parameter RemMntSvc to On.
☑ The insulation monitoring device starts collecting data. If the parameter IsoErrIgn is set to On, the error 3504 Insulation failure ignored is displayed.
✖ After 15 minutes, the displayed error 3504 does not disappear?
The insulation is defective.
• Have the insulation checked and, if necessary, repaired by a qualified person.
• Acknowledge the error.
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Switching to Grounded Operation
1. Log into the user interface (see Section 11.6.1, page 113).
2. Set the parameter RemMntSvc to Off.
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8
Troubleshooting
8.1
Safety during Troubleshooting
Danger to life from electric shock due to high voltages on the product
High voltages can be present on the product under fault conditions. Touching live components results in death or
serious injury due to electric shock.
• Observe all safety information when working on the product.
• Wear suitable personal protective equipment for all work on the product.
• If you cannot remedy the disturbance with the help of this document, contact the Service (see Section 16
"Contact", page 160).
8.2
Reading Off Disturbance Messages
8.2.1
Reading Off Error Messages via Touch Display
If an error occurs, a warning symbol is shown on the touch display.
Procedure:
• Select the
warning symbol.
☑ The touch display lists the error number, waiting time, error message and the necessary corrective measure to
eliminate the disturbance.
8.2.2
Reading Off Disturbance Messages via the User Interface
1. Log into the user interface (see Section 11.6.1, page 113).
2. Select SCS > Events.
3. To display all messages, activate the checkboxes Failures (F), Warnings (W) and Events (E).
☑ All messages will be displayed.
8.3
Acknowledging Disturbance Messages
8.3.1
Acknowledging Disturbance Messages via the Key Switch
Dealing with disturbances
Disturbance messages should only be acknowledged once the underlying causes have been eliminated.
If the causes of the disturbance have not been eliminated, the disturbance will still be detected after
acknowledgment and the disturbance message will reappear.
Procedure:
1. If an insulation error has occurred, switch the insulation monitoring device back on.
2. Turn the key switch switch to Stop and then back to Start after two seconds.
8.3.2
Acknowledging Disturbance Messages via the User Interface
Dealing with disturbances
Disturbance messages should only be acknowledged once the underlying causes have been eliminated.
If the causes of the disturbance have not been eliminated, the disturbance will still be detected after
acknowledgment and the disturbance message will reappear.
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8 Troubleshooting
SMA Solar Technology AG
You can only acknowledge disturbance messages via the BSC user interface after entering the installer password.
Procedure:
1. If an insulation error has occurred, switch the insulation monitoring device back on.
2. Log into the user interface (see Section 11.6.1, page 113).
3. Select SCS > Events.
4. Select the button [Acknowledge Error].
☑ The message Please confirm the error acknowledgement! appears.
5. Select the button [Yes].
8.4
8.4.1
Remedial Action in Case of Disturbances
Inverter Behavior in Case of Disturbances
If a disturbance occurs during operation, this may be caused by a warning or an error.
There are two levels assigned to each disturbance which influence the display and system behavior. Only in the case
of certain disturbances will the inverter behavior differ depending on the level. The level is increased from 1 to 2 if the
disturbance occurs five times within two hours or without interruption for two hours.
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8 Troubleshooting
Inverter behavior in the disturbance levels 1 and 2:
• Waiting time
The inverter switches to the operating state "Disturbance" and opens the AC contactor and DC switchgear. The
inverter does not feed into the grid for the defined waiting time.
The waiting time specifies how long the disturbance will be shown on the touch display and saved as a
disturbance. Once the waiting time has elapsed, the disturbance is no longer shown on the touch display. The
inverter then checks whether the cause of the disturbance has been rectified.
If the cause of the disturbance still exists after the waiting time has expired or the disturbance has been
acknowledged, the inverter remains in the operating state "Disturbance".
• Waiting for acknowledgement
The inverter switches to the operating state "Disturbance" and opens the AC contactor and DC switchgear. The
inverter does not feed in until the disturbance is acknowledged.
Once the disturbance has been acknowledged, it is no longer shown on the touch display. The inverter then
checks whether the cause of the disturbance has been rectified.
If the disturbance is no longer pending, it is deleted from the memory. If the cause of the disturbance still exists
after the disturbance has been acknowledged, the inverter remains in the operating state "Disturbance".
• Day change
The inverter switches to the operating state "Disturbance" and opens the AC contactor and DC switchgear. The
inverter does not feed in.
The disturbance is automatically reset when the day changes. Once the disturbance has been reset, it is no longer
shown on the touch display. The inverter then checks whether the cause of the disturbance has been rectified.
If the disturbance is no longer pending, it is deleted from the memory. If the cause of the disturbance still exists
after the day has changed or the disturbance has been acknowledged, the inverter remains in the operating state
"Disturbance".
• System-specific
The inverter switches to the operating state "Disturbance" and opens the AC contactor and DC switchgear. The
inverter does not feed in. How long the inverter remains in this state depends on the system-specific influencing
factors.
Once the time has elapsed, the disturbance is no longer shown on the touch display. The inverter then checks
whether the cause of the disturbance has been rectified. If the disturbance is no longer pending, it is deleted from
the memory. If the cause of the disturbance still exists after the disturbance has been acknowledged, the inverter
remains in the operating state "Disturbance".
• Warning
A warning does not affect inverter behavior. The cause of the warning must be determined and remedied.
In the operating state "Disturbance", the touch display shows a warning symbol, error number, waiting time, error
message and the required measure to eliminate the disturbance message.
Once the cause of the disturbance has been rectified and the disturbance is no longer displayed, it is deleted from the
fault memory. To view previous disturbances after they have been deleted from the fault memory, an event report is
filed on the SD memory card. The event report logs the time and type of disturbance. The event report can also be
displayed on the user interface.
Depending on the type of disturbance, a reset may be performed. When this happens, the relays are checked and the
supply voltage of the control system is switched off. This process takes less than one minute. While the control system is
booting, the regular waiting times for grid monitoring are complied with.
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8 Troubleshooting
8.4.2
SMA Solar Technology AG
Explanation of the Error Tables
You will find the following information in the error tables in the following sections:
A
Error no.
Explanation
9009
Fast stop tripped manually
B
S1
S2
R
Corrective measures
5 min
Q
‒
• Release switch again once
danger is eliminated.
Figure 24: Explanation of the error table (example)
Position
Explanation
A
Behavior of the inverter: disturbance level S1, disturbance level S2
• s / min: waiting time
• D: day change
• Q: waiting for acknowledgement
• W: warning
B
8.4.3
Reset
Error Numbers 01xx to 13xx - Disturbance on the Utility Grid
After a grid failure, the inverter monitors the utility grid for a specific period before reconnecting. When the inverter
monitors the utility grid after a grid error, the grid monitoring time is complied with. Certain errors, such as grid errors,
cause the inverter to shut down. In this case, the instantaneous value TmsRmg indicates the time for which the inverter
monitors the utility grid before reconnecting. This grid monitoring time can be defined in parameter GdErrTm.
Error no. Explanation
0103*
Grid voltage is too high. Overvoltage detected by redundant monitoring.
Inverter behavior
S1
S2
R
30 s
30 s
‒
• Check stability of the utility grid.
Grid voltage is too high. Overvolt- 30 s
age detected by standard monitoring.
30 s
‒
0203*
Grid voltage is too low. Undervolt- 30 s
age detected by redundant monitoring.
30 s
‒
0204*
Grid voltage is too low. Undervolt- 30 s
age detected by standard monitoring.
30 s
‒
0205*
One line conductor of the utility
grid has failed.
30 s
‒
SCS-BE-E7-en-12
• Check the grid voltage.
• Check grid connections.
0104*
72
Corrective measures
30 s
• Make sure the external fuses work
properly.
• Make sure the AC cable connections
are tight.
Operating Manual
8 Troubleshooting
SMA Solar Technology AG
Error no. Explanation
Inverter behavior
S1
Corrective measures
S2
R
Power frequency is too low. Power 30 s
frequency disturbance detected by
standard monitoring.
30 s
‒
0503*
Power frequency is too high.
Power frequency disturbance detected by standard monitoring.
30 s
30 s
‒
0504*
Power frequency is too low. Power 30 s
frequency disturbance detected by
redundant monitoring.
30 s
‒
0505*
Power frequency is too high.
Power frequency disturbance detected by redundant monitoring.
30 s
30 s
‒
0506*
The inverter has detected a standalone grid and has disconnected
from the utility grid.
‒
‒
‒
• Check power frequency.
0801
One line conductor of the utility
grid has failed.
30 s
30 s
‒
• Check the grid voltage.
0502*
• Check power frequency.
• Check the display of the grid monitoring
relay.
• Make sure the fuses in the load circuit
function properly.
• Make sure the external fuses work
properly.
• Make sure the AC cable connections
are tight.
1301
1500
Left-hand rotating magnetic field is
connected.
30 s
Q
‒
• Check phase angle.
• Make sure all fuses are switched on.
The conditions for grid reconnec‒
tion have not yet been reached after a grid error.
‒
‒
• Check the power frequency and grid
voltage.
* Depending on the parameterization, the disturbance message may have to be acknowledged manually.
8.4.4
Error Numbers 34xx to 40xx ‒ Disturbance at the DC Connection
Error no. Explanation
3403
The battery voltage is too high.
Inverter behavior
S1
S2
R
15
min
30
min
‒
• Check the DC voltage.
• Check the system design.
3404
Open-circuit voltage is too high.
Disturbance detected by standard
monitoring.
15
min
30
min
‒
3406
The DC voltage is too high.
15
min
30
min
‒
3501
The insulation monitoring device
has measured a too low grounding resistance.
‒
‒
‒
Operating Manual
Corrective measures
• Check the battery for ground faults.
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8 Troubleshooting
Error no. Explanation
SMA Solar Technology AG
Inverter behavior
S1
S2
R
Corrective measures
3502
The GFDI has tripped.
‒
‒
‒
• Check the battery for ground faults.
3504
The insulation monitoring device
has detected an insulation error.
‒
‒
‒
• Check the battery for ground faults.
If the parameter IsoErrIgn is set to
On, this error is ignored.
3507
A grounding error has occurred
on the battery.
Q
Q
‒
• Check the battery for ground faults.
3510
The inverter has detected an insulation error on the inverter bridge.
Q
Q
‒
• Check the battery for ground faults.
3511
The inverter has detected an insulation error.
W
W
‒
• Check the battery for ground faults.
3512
The Remote GFDI has detected a
permanent ground fault.
Q
Q
‒
• Check the battery for ground faults.
3515
A ground fault detected by
W
Soft Grounding has been ignored.
W
‒
• Check the battery for ground faults.
3517
Insulation measuring is being performed.
W
W
‒
3601
Leakage current to ground has oc- W
curred on the battery or the threshold defined in parameter
RisoCtlWarn has been reached.
W
‒
The battery current is too high.
D
3803
1 min
‒
• Check the grounding and equipotential
bonding.
• Check the system design.
• Check the parameter RisoCtlWarn.
‒
• Check the DC input current.
• Check the system design.
3904
The inverter could not synchronize
the DC link with the battery voltage present within the specified
time.
30 s
Q
‒
• Contact SMA Service Line.
3905
The inverter could not synchronize
the DC link with the specified setpoint of the battery voltage within
the specified time.
30 s
Q
‒
• Contact SMA Service Line.
8.4.5
Error Numbers 6xxx to 9xxx - Disturbance on the Inverter
Error no. Explanation
Inverter behavior
S1
S2
R
6002
Calibration data cannot be
loaded.
Q
Q
‒
6004
RAM
‒
‒
‒
74
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Corrective measures
• Contact SMA Service Line.
‒
Operating Manual
8 Troubleshooting
SMA Solar Technology AG
Error no. Explanation
Inverter behavior
S1
S2
R
‒
‒
‒
Corrective measures
6005
ROM
6113
Data block cannot be loaded from W
EEPROM or channel list has
changed (e.g. after firmware update)
W
‒
• Contact SMA Service Line.
6115
Setting of hardware thresholds on
D/A converters is not possible.
5 min
5 min
x
• Contact SMA Service Line.
6116
Real-time clock has not initialized.
W
W
‒
• Contact SMA Service Line.
6117
Device address not recognized.
5 min
5 min
x
• Contact SMA Service Line.
6118
Parameter file is defective.
‒
‒
‒
6119
Data structure for communication
between operation control unit
and digital signal processor is invalid.
5 min
5 min
x
• Contact SMA Service Line.
6120
Watchdog tripping error
30 s
W
‒
• Contact SMA Service Line.
6121
No response from watchdog
30 s
W
‒
• Contact SMA Service Line.
6122
Ten internal monitoring errors have W
occurred in succession.
5 min
‒
• Contact SMA Service Line.
6128
General error
5 min
5 min
x
• Contact SMA Service Line.
6129
General firmware warning
‒
‒
‒
‒
6136
Interruption of communication to
the inverter has been detected.
‒
‒
‒
‒
6404
Overcurrent at line conductor L1,
L2 or L3
‒
Q
x
• Contact SMA Service Line.
6405
Overvoltage in the DC link of the
inverter bridge
30 s
5 min
‒
• Contact SMA Service Line.
6410
24 V supply voltage is invalid.
5 min
5 min
x
• Contact SMA Service Line.
6417
15 V supply voltage is invalid.
5 min
5 min
x
• Contact SMA Service Line.
6418
Overtemperature of the inverter
bridge
5 min
15
min
‒
• Contact SMA Service Line.
6422
Inverter bridge in undefined state
30 s
5 min
‒
• Contact SMA Service Line.
6423
Overtemperature in the switch
cabinet
5 min
30
min
‒
• Contact SMA Service Line.
6425
Synchronization error with utility
grid
30 s
5 min
x
• Contact SMA Service Line.
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‒
‒
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8 Troubleshooting
Error no. Explanation
SMA Solar Technology AG
Inverter behavior
S1
S2
R
Corrective measures
6427
Sensor error of DC voltage measurement
30 s
1 h
‒
• Contact SMA Service Line.
6440
The MV transformer is no longer
hermetically sealed.
30 s
5 min
‒
• Check the MV transformer.
6441
Sensor error during measurement
of DC voltage
30 s
30 s
‒
• Contact SMA Service Line.
6443
Unspecified error in digital signal
processor
30 s
‒
x
• Contact SMA Service Line.
6447
Self-test of inverter bridge failed
Q
Q
‒
• Contact SMA Service Line.
6448
Insulation monitoring provides non- W
permitted values
W
‒
• Check insulation monitoring.
6451
Measured AC voltage of the inverter is less than utility grid voltage.
W
W
‒
• Contact SMA Service Line.
6452
Measured AC voltage of the utility W
grid is less than inverter voltage.
W
‒
• Contact SMA Service Line.
6453
AC voltage of grid limit monitoring W
is faulty.
W
‒
• Contact SMA Service Line.
6454
AC current is faulty.
W
W
‒
• Contact SMA Service Line.
6455
AC voltage is faulty.
W
W
‒
• Contact SMA Service Line.
6456
Pre-charging circuit of DC link is
defective.
W
W
‒
• Contact SMA Service Line.
6457
Capacitor self-test has failed.
Q
Q
‒
• Contact SMA Service Line.
6461
Insulation monitoring device has
not adopted threshold.
15
min
15
min
x
• Check the insulation monitoring device
and cabling.
6501
Interior temperature of inverter is
too high.
30 s
1 min
‒
• Check function of the fans.
6502
Temperature of inverter bridge is
too high.
30 s
1 min
‒
6508
Outside temperature is too high.
30 s
1 min
‒
6605
The fast stop was tripped due
30 s
overtemperature in the switch cabinet.
1 min
‒
• Contact SMA Service Line.
6607
Overcurrent during battery discharging
30 s
Q
‒
• Contact SMA Service Line.
6608
Overcurrent during battery discharging
30 s
Q
‒
• Contact SMA Service Line.
76
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• Clean the fans.
• Clean clogged fan inlets and ventilation
plates.
Operating Manual
8 Troubleshooting
SMA Solar Technology AG
Error no. Explanation
Inverter behavior
S1
S2
R
Corrective measures
6609
Battery undervoltage
30 s
Q
‒
• Contact SMA Service Line.
6610
Battery overvoltage
30 s
Q
‒
• Contact SMA Service Line.
6617
Voltage gradient
‒
‒
‒
‒
6618
Current gradient
‒
‒
‒
‒
7001
Temperature sensor error
W
W
‒
7002
W
W
‒
7004
W
W
‒
7006
W
W
‒
• Check the wiring of the temperature
sensor.
• Contact SMA Service Line.
7501
Interior fan 1 is defective.
W
W
‒
‒
7502
Interior fan 2 is defective.
W
W
‒
‒
7503
Inverter bridge fan is defective.
W
W
‒
• Check function of the fans.
• Clean the fans.
• Clean clogged fan inlets and ventilation
plates.
7507
Motor-protective circuit breaker of
fan has tripped.
W
W
‒
‒
7600
Communication between touch dis- W
play and communication unit is interrupted. The error number appears on the display only.
W
‒
7601
Internal inverter error
30 s
1 min
x
• Contact SMA Service Line.
7602
Internal communication error has
30 s
occurred or communication is interrupted.
1 min
x
• Contact SMA Service Line.
7605
Communication error with the
power electronics has occurred or
communication is interrupted.
30 s
1 min
x
• Contact SMA Service Line.
7704
Faulty switching status of the DC
switchgear
30 s
Q
‒
• When disconnecting the inverter, check
that all motor-driven circuit breaker
switches are set to the OFF position. If
not, set all switches to OFF.
• Check cabling between touch display
and communication unit.
• Contact SMA Service Line.
• Contact SMA Service Line.
7706
The AC disconnection unit is open
or was tripped.
30 s
Q
‒
• Contact SMA Service Line.
7707
Faulty switching status of the AC
disconnection unit
30 s
Q
‒
• Contact SMA Service Line.
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8 Troubleshooting
Error no. Explanation
SMA Solar Technology AG
Inverter behavior
S1
S2
R
Corrective measures
7708
Faulty switching status of Remote GFDI
W
W
‒
• Contact SMA Service Line.
7709
90% of switch cycles of the DC
switchgear reached
10 s
10 s
‒
• Contact SMA Service Line.
7710
100% of switch cycles of the DC
switchgear reached
30 s
30 s
‒
• Contact SMA Service Line.
7714
Maximum number of GFDI switch
cycles reached
30 s
30 s
‒
• Replace GFDI.
7801
The surge arrester is defective or
the back-up fuse of the surge arrester was tripped.
W
W
‒
• Check the surge arrester.
7901
A reverse current has occurred on
the battery.
1 min
D
x
8711
Incorrect setpoint for operating
mode
‒
‒
‒
‒
9000
Power electronics self-test is running. This message disappears
once the self-test is complete.
W
W
‒
‒
9009
Fast stop has tripped.
30 s
30 s
‒
• Eliminate error and switch fast stop back
on.
9013
This relates to a grid management
shutdown. The error is reset by a
signal from the grid operator or
from the safety system of the grid
interconnection point.
30 s
30 s
‒
• Eliminate error and switch fast stop back
on.
9019
Defective fast stop
30 s
C
‒
• Check the fast stop cabling.
9342
DC connect polarity incorrect.
30 s
Q
‒
• Ensure that the polarity of the DC
connections is correct.
• Check the back-up fuse of the surge
arrester.
• Contact SMA Service Line.
• Acknowledge the error.
9990
8.4.6
General error
‒
‒
‒
‒
Error Numbers 1xxxx ‒ Disturbance on the Battery and Storage System
Error no. Explanation
Inverter behavior
13006
Limited operation. Deadlink behavior is active.
13007
78
Modbus communication could not
be established.
Error in Modbus commands
SCS-BE-E7-en-12
Corrective measures
• Acknowledge the error.
If the error is still present
after this, contact the
SMA Service Line.
Operating Manual
8 Troubleshooting
SMA Solar Technology AG
Error no. Explanation
Inverter behavior
Corrective measures
13009
Error when establishing connection Inverter stops. The start will be
performed automatically, once
the error is eliminated.
‒
13010
Error during data transmission
‒
‒
13011
Error during data receipt
‒
‒
13012
Error during SDO data processing ‒
‒
13013
Monitoring of the signal line reports a short-term disturbance.
‒
‒
13014
Signal line reports a long-term disturbance.
Possible limited operation
‒
13015
Unspecific error message from the
battery
Possible limited operation
‒
13016
Unspecific warning from the battery
13017
Disconnection of the battery neces- Limited operation
sary
• Acknowledge the error.
Fire alarm contact triggered
• Identify source of error and
rectify.
13019
‒
If the error is still present
after this, contact the
SMA Service Line.
The inverter stops.
• Acknowledge the error.
If the error is still present
after this, contact the
SMA Service Line.
13049
Unknown battery status detected
16019
Error in the file system for slow log Limited operation
data
‒
16020
Error during file access in the file
system for slow log data
‒
‒
16021
Error in the file system for fast log
data
‒
‒
16022
Error during file access in the file
system for fast log data
‒
‒
16023
Error in the file system 2 for fast
log data
‒
‒
16024
Error during file access in the file
system 2 for fast log data
‒
‒
Operating Manual
Inverter stops. The start will be
performed automatically, once
the error is eliminated.
‒
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8 Troubleshooting
SMA Solar Technology AG
Error no. Explanation
Inverter behavior
Corrective measures
16025
Error in the file system
‒
‒
16026
Error during file access
‒
‒
16028
Error during installation of a parameter module
‒
‒
16029
Error during RTC initialization
‒
‒
16030
Error during NTP initialization
‒
‒
16031
Error during inverter communication initialization
Inverter stops. The start will be
performed automatically, once
the error is eliminated and acknowledged.
‒
16032
Error during logging initialization
‒
16033
Error during initialization of an
SSC server
Limited operation, e.g. derating
or waiting for grid return
16034
Error during initialization of a
SCADA server
16035
Error during initialization of the
alarm system
16036
Error during initialization of the
database
16043
Error during initialization of the
battery
16044
Error during initialization of the
control
16051
Reset due to voltage error
‒
‒
16052
Increased occurrence of disturbances
The inverter stops.
• Read off disturbance
messages
• Identify source of error and
rectify.
• Acknowledge the error.
If the error is still present
after this, contact the
SMA Service Line.
16055
Internal connection error
‒
‒
16056
Loss of log data
‒
‒
16061
Error Fast off
‒
‒
17001
FSC communication error
‒
‒
17002
FSC reading error
‒
‒
80
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Operating Manual
8 Troubleshooting
SMA Solar Technology AG
Error no. Explanation
Inverter behavior
Corrective measures
17003
FSC writing error
‒
‒
17004
Missing life sign from SSC
Limited operation
‒
18001
SCADA communication error
‒
‒
18002
SCADA reading error
‒
‒
18003
SCADA writing error
‒
‒
18004
Missing life sign from SCADA.
‒
‒
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9 Maintenance
9
SMA Solar Technology AG
Maintenance
9.1
Safety during Maintenance
Danger to life from electric shock due to live voltage
High voltages are present in the live components of the product. Touching live components results in death or serious
injury due to electric shock.
• Wear suitable personal protective equipment for all work on the product.
• Do not touch any live components.
• Observe all warning messages on the product and in the documentation.
• Observe all safety information of the battery manufacturer.
• Before any work is performed, always disconnect the following devices externally:
– Grid voltage for grid feed-in
– Internal power supply
– DC voltage of the battery
– Additional external voltages, e.g. control signals from a control room
• Ensure that no disconnected devices can be reconnected.
• After switching off the inverter, wait at least 15 minutes before opening it to allow the capacitors to discharge
completely.
• Before working on the inverter, make sure that all devices are completely voltage-free.
• Cover or isolate any adjacent live components.
Danger to life due to high short-circuit current in the battery
Despite careful construction, a short circuit may occur in the inverter under fault conditions. In case of a short circuit in
the inverter, the connected battery can supply a very high short-circuit current. The resulting electric arc and pressure
wave lead to death or serious injuries.
• Install the inverter in a closed electrical operating area.
• Always close and lock the inverter.
• Before entering the operating area, externally disconnect the inverter on the AC and DC side.
• Only open the inverter when it is completely disconnected and the capacitors are fully discharged.
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9 Maintenance
Property damage due to dust intrusion and moisture penetration
Dust or moisture intrusion can damage the product and impair its functionality.
• Do not open the enclosure during rainfall or when humidity exceeds the specified thresholds. The humidity
thresholds are: 15% to 95%.
• Only perform maintenance work when the environment is dry and free of dust.
• Operation of the product is only permitted when it is closed.
• Connect the external supply voltage after mounting and installing the product.
• If the installation or commissioning process is interrupted, mount all panels.
• Close and lock the enclosure.
• The product must always be closed for storage.
• Store the product in a dry and covered location.
• Temperature at the storage location must be in the specified range. The temperature range is: −25°C to +70°C
.
Damage to electronic components due to electrostatic discharge
Electrostatic discharge can damage or destroy electronic components.
• Observe the ESD safety regulations when working on the product.
• Wear suitable personal protective equipment for all work on the product.
• Discharge electrostatic charge by touching grounded enclosure parts or other grounded elements. Only then is
it safe to touch electronic components.
9.2
Maintenance Schedule and Consumables
9.2.1
Notes on Maintenance Work
Adverse ambient conditions reduce maintenance intervals
Location and ambient conditions influence the maintenance intervals. Note that cleaning and corrosion protection
may be required more frequently depending on the conditions at the installation site.
• If the DC subdistribution is subject to adverse ambient conditions, it is recommended to shorten the
maintenance intervals.
• SMA recommends an optical inspection every six months to determine the maintenance requirements.
Maintenance report for maintenance
Maintenance and repair works are to be documented in a maintenance report. The maintenance report can be
found in the download area at www.SMA-Solar.com.
Consumables and maintenance materials
Only those consumables and maintenance materials not normally included in the standard equipment of an
electrically qualified person are listed. It is taken for granted that standard tools and materials such as torque
wrenches, one-contact voltage testers and wrenches will be available for all maintenance operations.
Spare parts
Spare parts can be identified via the reference designation and the circuit diagram. The spare-parts list includes
the article numbers of each spare part. For information on a specific article number, contact us (see Section 16
"Contact", page 160).
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9.2.2
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Maintenance Work Every 24 Months
Required maintenance materials and tools:
☐ A suitable water-free, heat-resistant lubricant
☐ A testing device approved by the manufacturer of the AC disconnection unit, e.g. TT1 by ABB
☐ Talcum, petroleum jelly or wax for maintaining the seals
☐ Use touch-up sticks, paint brushes, cans of spray paint or 2K-PUR acrylic paint in the appropriate RAL color to
repair small-area surface damage.
☐ Use touch-up paint or 2K-PUR acrylic paint in the appropriate RAL color to repair large-area surface damage.
☐ Use zinc plating with thick-layer passivation to repair damage on the zinc-plated steel frame in the base area, e.g.
LZ-09. Observe the relevant instructions of the manufacturer.
☐ Abrasive cloth
☐ Degreaser
☐ A surge arrester testing device approved by the surge arrester manufacturer
Maintenance work with supply voltage present
Task
See
Reading off error messages and warnings
Section 8.2, page 69
Checking the DC switchgear
Section 9.4.16, page 99
Checking the AC disconnection unit
Section 9.4.15, page 98
Checking the fans
Section 9.4.12, page 95
Checking the heating element and the hygrostat
Section 9.4.13, page 96
Inverter with low-temperature option: checking the heating elements
Section 9.4.11, page 94
Checking the function of the UPS
Section 9.4.14, page 97
Maintenance under voltage-free conditions
Task
See
Performing the visual inspection
Section 9.4.1, page 86
Cleaning the ventilation plate
Section 9.4.7, page 89
Cleaning the air duct and ventilation grids
Section 9.4.6, page 89
Checking the interior
Section 9.4.2, page 86
Checking the bolted connections of the power cabling
Section 9.4.8, page 90
Inverter with low-temperature option: cleaning the heating elements
Section 9.4.10, page 93
Checking the labels
Section 9.4.9, page 91
Checking the latches, door stops and hinges
Section 9.4.4, page 87
Checking the inverter surface
Section 9.4.5, page 88
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9.3
9.3.1
Repair Schedule and Spare Parts
Information on Repair Work
Spare parts
Spare parts can be identified via the reference designation and the circuit diagram. The spare-parts list includes
the article numbers of each spare part. For information on a specific article number, contact us (see Section 16
"Contact", page 160).
9.3.2
Demand-Based Annual Repairs
Task
Interval
Replace key switch
In case of severe signs of wear
Replace surge arrester
If tripped
Replace labels on the enclosure
If illegible, defective or missing
Replace GFDI / ABB circuit breaker
After 100 trippings due to short circuit
or
after number of switching cycles: 7000
• Contact SMA Service Line.
Replace Remote Switch Unit of the GFDI
Number of switching cycles: 7000
• Contact SMA Service Line.
Replace DC switchgear
Number of switching cycles: 10000
• Contact SMA Service Line.
9.3.3
Repairs every 10 Years
Task
Comment
Replace 24 V power supply units
• Contact SMA Service Line.
Replace the fans of the AC disconnection unit
• Contact SMA Service Line.
Replace exterior key switch, front element and label
• Contact SMA Service Line.
9.3.4
Repairs every 13 Years
Replacement intervals for order option "Q at Night"
The replacement intervals are halved for order option "Q at Night".
Task
Comment
Replace interior fan in the inverter cabinet
• Contact SMA Service Line.
Replace inverter bridge fan
• Contact SMA Service Line.
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9.4
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Maintenance Work
9.4.1
Performing the Visual Inspection
Danger to life due to electric shock or electric arc if live components are touched
• Switch off the inverter and wait at least 15 minutes before opening it to allow the capacitors to discharge
completely.
• Disconnect the inverter (see Section 6, page 50).
Procedure:
1. Check the inverter for visual defects such as discoloration, dirt, damage and scratches on the enclosure.
If visual defects are present, repair these immediately.
2. Ensure that there are no objects on or around the inverter that are flammable or that could otherwise endanger
operational safety.
9.4.2
Cleaning the Interior
Danger to life due to electric shock or electric arc if live components are touched
• Switch off the inverter and wait at least 15 minutes before opening it to allow the capacitors to discharge
completely.
• Disconnect the inverter (see Section 6, page 50).
Procedure:
1. Remove dirt and dust from the inverter interior and from all devices.
2. Check the inverter for leaks.
If leaks are present, fix them.
3. Remove moisture.
9.4.3
Checking the Seals
Figure 25: Section drawing with top view of a door seal (example)
Position
Designation
A
Seal
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Position
Designation
B
Side panel
C
Sealing area
D
Hinge
E
Door
F
Frame construction
9 Maintenance
Required maintenance material (not included in the scope of delivery):
☐ A suitable water-free, heat-resistant lubricant
☐ Talcum, petroleum jelly or wax for maintaining the seals
Danger to life due to electric shock or electric arc if live components are touched
• Switch off the inverter and wait at least 15 minutes before opening it to allow the capacitors to discharge
completely.
• Disconnect the inverter (see Section 6, page 50).
Procedure:
1. Check whether the seals in the sealing area show any damage.
If seals are damaged, contact us (see Section 16 "Contact", page 160).
2. Apply talcum, petroleum jelly or wax to seals. This will prevent frost damage.
3. After removing the side panels: check whether the side panel seals display any damage in the sealing area.
If seals are damaged, contact us (see Section 16 "Contact", page 160).
9.4.4
Checking the Latches, Door Stops and Hinges
Required maintenance material (not included in the scope of delivery):
☐ A suitable, water-free and heat-resistant lubricant, e.g. WD40
☐ Non-greasing antifreeze agent, e.g. PS88
Danger to life due to electric shock or electric arc if live components are touched
• Switch off the inverter and wait at least 15 minutes before opening it to allow the capacitors to discharge
completely.
• Disconnect the inverter (see Section 6, page 50).
Procedure:
1. Check whether the doors latch easily. Open and close the doors several times.
If the doors do not latch easily, lubricate all moving parts of the latch.
2. Check whether the stops hold the doors in place.
If the doors cannot be arrested, lubricate the door stops.
3. Check whether the door hinges move easily.
If the door hinges do not move easily, apply lubricant.
4. Lubricate all moving parts and movement points.
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5. Tighten any loose screws with the appropriate torque.
6. If the inverter is installed in regions where below-freezing temperatures occur, apply the non-greasing antifreeze to
the profile cylinder of the door lock and the key switch in order to protect them from icing up.
9.4.5
Checking the Inverter Surface
Required maintenance material (not included in the scope of delivery):
☐ Abrasive cloth
☐ Degreaser
☐ Use touch-up sticks, paint brushes, cans of spray paint or, alternatively, 2K-PUR acrylic paint in the appropriate
RAL color to repair small-area surface damage. Observe the relevant instructions of the paint manufacturer.
☐ Use touch-up paint or alternatively 2K-PUR acrylic paint in the appropriate RAL color to repair large-area surface
damage. Observe the relevant instructions of the paint manufacturer.
☐ Use zinc plating with thick-layer passivation to repair the damage on the zinc-plated steel frame in the base area,
e.g. LZ-09. Observe the relevant instructions of the manufacturer.
Position
RAL color
Color
Roof
RAL 7004
Signal gray
Base
RAL 7004
Signal gray
Enclosure
RAL 9016
Traffic white
Danger to life due to electric shock or electric arc if live components are touched
• Switch off the inverter and wait at least 15 minutes before opening it to allow the capacitors to discharge
completely.
• Disconnect the inverter (see Section 6, page 50).
Procedure:
1. Remove dirt.
2. Check surfaces for damage or corrosion.
If the surfaces are damaged or corroded, repair them without delay or within three weeks at the latest.
3. To remove small-area surface damage:
• Sand the surface.
• Clean the surface with degreaser.
• Paint the surface.
4. To remove large-area surface damage:
• Sand the surface.
• Clean the surface with degreaser.
• Paint the entire surface.
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9.4.6
Cleaning the Air Duct and Ventilation Grids
Danger to life due to electric shock or electric arc if live components are touched
• Switch off the inverter and wait at least 15 minutes before opening it to allow the capacitors to discharge
completely.
• Disconnect the inverter (see Section 6, page 50).
Procedure:
1. Disassemble the ventilation grids (see Section 11.2.3, page 104).
2. Vacuum the air duct from the outside or clean it with a brush.
3. Vacuum the ventilation grids or clean them with a brush.
4. Check the ventilation grids for visible damage. Replace the ventilation grids, if required.
5. Mount the ventilation grids (see Section 11.2.3, page 104).
9.4.7
Cleaning the Ventilation Plate
Danger to life due to electric shock or electric arc if live components are touched
• Switch off the inverter and wait at least 15 minutes before opening it to allow the capacitors to discharge
completely.
• Disconnect the inverter (see Section 6, page 50).
Procedure:
1. Disassemble the panels (see Section 11.2.1, page 102).
2. Pull the ventilation plate out of the inverter cabinet. Grip
underneath the ventilation plate and press the middle part up
while pulling it out.
3. Clean the ventilation plate with a brush or vacuum.
4. Slide the ventilation plate into the inverter cabinet. The
ventilation grid in the ventilation plate must face the rear panel.
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☑ The ventilation grid ends up flush with the inverter.
✖ The ventilation plate will not go all the way in?
• Grip the ventilation plate from underneath and press the middle part upwards while sliding it in.
5. Mount the panels (see Section 11.2.1, page 102).
9.4.8
Checking the Bolted Connections of the Power Cabling
Danger to life due to electric shock or electric arc if live components are touched
• Switch off the inverter and wait at least 15 minutes before opening it to allow the capacitors to discharge
completely.
• Disconnect the inverter (see Section 6, page 50).
Damage to bolted connections through overtightening
If the permitted torques are exceeded, bolted connections can be damaged. In this case, fault-free operation of the
inverter is no longer ensured.
• Only tighten loose bolted connections to the prescribed torque. Torque specifications are indicated in the circuit
diagram of the inverter. If there is any information missing, contact (see Section 16 "Contact", page 160).
Procedure:
1. Check that the bolted connections of all assemblies are securely in place.
If bolted connections are loose, tighten them using a torque wrench.
2. Check whether all bolted connections of the power cabling are securely in place.
If bolted connections are loose, tighten them using a torque wrench.
3. Check the insulation and connections for any discoloration or change in appearance.
If insulation and connections are discolored or changed, contact us (see Section 16 "Contact", page 160).
4. Check the bolted connections for damage and contact elements for corrosion.
If bolted connections are damaged or contact elements corroded, replace them.
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9.4.9
Checking the Labels
UTILITY
GRADE
A
B
B
C
D
O
O
E
N
F
G
H
I
K
L
M
Figure 26: Position of the labels
Position
Order number
Designation
A
86-029687
Use hearing protection
B
86-05200
Beware of dangerous voltage
C
86-79615
Beware of a danger zone
D
86-10867153
Risk of electrical shock even when the device is disconnected.
86-003307
5 Safety rules
86-003314
Risk of lethal electric shock due to active power source
86-003303
Risk of lethal electric shock due to active power source
E
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Position
Order number
Designation
F
86-003307
5 Safety rules
G
86-103700.01
The negative terminal of the battery is grounded in the inverter.
86-103600.01
The positive terminal of the battery is grounded in the inverter.
H
86-003304
Unintended tripping due to modified settings.
I
86-003306
Plant protected by conductors.
K
86-003305
Incorrect connection leads to destruction of the device.
L
86-1086701023
Risk of lethal electric shock due to active power source
M
86-0099
Position of grounding
N
86-1086701024
Danger of burn injury due to hot components below the cover.
O
86-10867153
Risk of electrical shock even when the device is disconnected.
Danger to life due to electric shock or electric arc if live components are touched
• Switch off the inverter and wait at least 15 minutes before opening it to allow the capacitors to discharge
completely.
• Disconnect the inverter (see Section 6, page 50).
Procedure:
• Check whether any warning message or label is damaged or missing.
Replace any warning messages and labels which are missing or illegible. If necessary, you can order the labels
using the order number stated above. Contact us (see Section 16, page 160).
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9.4.10 Inverter with Low-Temperature Option: Cleaning the Heating Elements
A
B
A
Figure 27: Position of the heating elements and the temperature control
Position
Designation
A
Heating element with low-temperature range option
B
Connection plug of the temperature control
Danger to life due to electric shock or electric arc if live components are touched
• Switch off the inverter and wait at least 15 minutes before opening it to allow the capacitors to discharge
completely.
• Disconnect the inverter (see Section 6, page 50).
Procedure:
1. Disassemble the protective covers (see Section 11.2.2, page 103).
2. Remove dirt and dust from the heating elements.
3. Remove moisture.
4. Mount the protective covers (see Section 11.2.2, page 103).
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9.4.11 Inverter with Low-Temperature Option: Checking the Heating Elements
A
B
A
Figure 28: Position of the heating elements and the temperature control
Position
Designation
A
Heating element with low-temperature range option
B
Connection plug of the temperature control
Danger to life due to electric shock or electric arc if live components are touched
• Switch off the inverter and wait at least 15 minutes before opening it to allow the capacitors to discharge
completely.
• Disconnect the inverter (see Section 6, page 50).
Risk of burns due to hot components
Some components of the product can get very hot during operation. Touching these components can cause burns.
• Observe the warnings on all components.
• During operation, do not touch any components marked with such warnings.
• After switching off the product, wait until any hot components have cooled down sufficiently.
• Wear suitable personal protective equipment for all work on the product.
Procedure:
1. Switch the inverter to Stop.
2. Disassemble the protective covers (see Section 11.2.2, page 103).
3. Connect the supply voltage (see Section 6.3.1, page 52).
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4. Remove the connection plug of the temperature control.
☑ The inverter switches off with an audible click. After approximately two minutes, the inverter audibly switches
the supply voltage off.
✖ There is no audible switching sound?
• Contact SMA Service Line.
5. Check whether the heating elements are radiating heat after a delay time of five minutes.
If the heating elements are not radiating heat, contact us (see Section 16 "Contact", page 160).
6. Insert the connection plug of the temperature control.
☑ The inverter switches the supply voltage on with an audible click. After approximately two minutes, the
inverter again emits an audible switching sound.
✖ There is no audible switching sound?
• Contact SMA Service Line.
7. Mount the protective covers (see Section 11.2.2, page 103).
9.4.12 Checking the Fans
Danger to life due to electric shock or electric arc if live components are touched
• Switch off the inverter and wait at least 15 minutes before opening it to allow the capacitors to discharge
completely.
• Disconnect the inverter (see Section 6, page 50).
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Procedure:
1. Switch the inverter to Stop.
2. Connect the supply voltage (see Section 6.3.1, page 52).
☑ The fans start to run for a few moments.
✖ The fans do not start up?
• Contact SMA Service Line.
9.4.13 Checking the Heating Elements and Hygrostat
A
B
Figure 29: Position of the heating element and the hygrostat
Position
Designation
A
Hygrostat
B
Heating element
Danger to life due to electric shock or electric arc if live components are touched
• Switch off the inverter and wait at least 15 minutes before opening it to allow the capacitors to discharge
completely.
• Disconnect the inverter (see Section 6, page 50).
Risk of burns due to hot components
Some components of the product can get very hot during operation. Touching these components can cause burns.
• Observe the warnings on all components.
• During operation, do not touch any components marked with such warnings.
• After switching off the product, wait until any hot components have cooled down sufficiently.
• Wear suitable personal protective equipment for all work on the product.
Procedure:
1. Switch the inverter to Stop.
2. Connect the supply voltage (see Section 6.3.1, page 52).
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3. Set the hygrostat to the minimum value. To do this, pull the selector switch out slightly.
Tip: the hygrostat is adjusted correctly if the relay of the hygrostat emits an audible click.
4. Check whether the heating elements are radiating heat after a delay time of five minutes.
If the heating elements are not radiating heat, contact us (see Section 16 "Contact", page 160).
5. Reset the hygrostat to the initial value. To do this, press the selector switch back towards the hygrostat. The initial
value of the hygrostat is indicated on the hygrostat.
9.4.14 Checking the Function of the UPS
Figure 30: Positon of the UPS
Position
Designation
A
Uninterruptible power supply (UPS)
Danger to life due to electric shock or electric arc if live components are touched
• Switch off the inverter and wait at least 15 minutes before opening it to allow the capacitors to discharge
completely.
• Disconnect the inverter (see Section 6, page 50).
Procedure:
1. Switch the inverter to Stop.
2. Connect the supply voltage (see Section 6.3.1, page 52).
3. Measure the voltage at the supply voltage output between L1 and N.
☑ The voltage is approximately 230 V.
✖ Voltage deviates significantly?
• Contact SMA Service Line.
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4. Measure the voltage at the supply voltage output of the UPS at -X400 terminal 5 and -X402 terminal 5.
☑ The voltage is approximately 24 V.
✖ Voltage deviates significantly?
• Contact SMA Service Line.
5. Disconnect the supply voltage (see Section 6.2.2, page 51).
6. Measure the time until the communication unit switches off.
☑ The communication unit switches off after 15 seconds at the earliest.
✖ The communication unit switches off earlier?
• Contact SMA Service Line.
9.4.15 Checking the AC Disconnection Unit
The inverter is optionally equipped with an AC disconnection unit. If a circuit breaker manufactured by ABB is installed,
it needs to be checked. If a circuit breaker by LS Industrial Systems is installed, no checking is necessary.
Figure 31: Switch positions of the AC disconnection unit from ABB
Position
Designation
Explanation
A
Switch position on
The AC disconnection unit is closed.
B
Central switch position
The AC disconnection unit was tripped and is open.
C
Switch position off
The AC disconnection unit is open.
Additionally required maintenance material (not included in the scope of delivery):
☐ Test device approved by the manufacturer of the AC disconnection unit, e.g. TT1 by ABB
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Danger to life from electric shock due to live voltage
High voltages are present in the conductive components of the inverter. Touching live components results in death or
serious injury due to electric shock.
• After switching off the inverter, wait at least 15 minutes before opening it to allow the capacitors to discharge
completely.
• Wear suitable personal protective equipment for all work on the product.
• All work must be carried out in accordance with this document. All safety information must be observed.
• Do not touch any live components of the inverter or the medium-voltage grid. Comply with all applicable safety
regulations for handling medium-voltage grids.
Procedure:
1. Use the test device to check whether the AC disconnection unit is ready for operation (instructions for testing are
included in the documentation of the testing device).
2. If the AC disconnection unit is not ready for operation, contact (see Section 16 "Contact", page 160).
9.4.16 Checking the DC switchgear
A
B
D
C
Figure 32: Indicators on the DC load-break switch
Position
Designation
A
Spring status indicator
B
Position indicator
C
ON button
D
OFF button
Procedure:
1. Switch the inverter via the control room to Stop.
2. Disconnect the battery voltage externally.
3. Enter the operating area of the inverter.
4. Turn the key switch to Stop.
5. Open the doors of the interface cabinet.
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6. Check whether the DC load-break switch is switched off and indicating the Off position.
If the DC load-break switch is not switched off or indicating the Off position, contact the SMA Service Line.
7. Close the doors of the interface cabinet.
9.5
9.5.1
Repair Work
Reading off the Replacement Interval Meter
1. Log into the SC-COM user interface as an installer .
2. Select Data > Devices.
3. Select the desired device from the list.
4. Select the tab Instantaneous values.
5. If the instantaneous value CntGfdiSw exceeds 7000, replace the Remote GFDI (see Section 16 "Contact", page 160
).
6. If the instantaneous value CntGfdiSw exceeds 10000, replace the DC switchgear (see Section 16 "Contact",
page 160).
7. If the error message 7714 appears on the display, replace the GFDI (see Section 16 "Contact", page 160).
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10 Disposal
10 Disposal
Proper disassembly and disposal
When the inverter has reached the end of its service life, it becomes electronic waste. Electronic waste contains on
the one hand valuable materials which can be recycled as secondary raw materials, and on the other, substances
which are hazardous to the environment. Contact your local commercial disposal services for information on
optimum material utilization.
• Prior to disassembly, perform a visual inspection to ensure that the supporting elements of the inverter are not
rusted or unstable.
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11 Periodic Actions
11.1
Inserting the Cables
1. Remove the screws at the top of the sealing plate.
2. Remove the sealing plate.
3. Loosen the screws at the side of the sealing plate.
4. Remove the required number of rubber seals from the sealing plate. Make sure that the diameter of the rubber
seals corresponds to the diameter of the cables to be inserted. Use the additional rubber seals included in the
scope of delivery, if necessary.
5. Remove the sealing plugs from those rubber seals through which the cables are to be led.
6. Lead the cables through the rubber seals.
7. Insert the rubber seals in the sealing plate avoiding any distortion. This will ensure the tightness of the seal.
8. Tighten the screws at the side of the sealing plate.
9. Screw the sealing plate to the floor of the interface cabinet.
11.2
Mounting and Disassembly Work
11.2.1 Disassembling and Mounting the Panels
Danger to life due to electric shock or electric arc if live components are touched
• Switch off the inverter and wait at least 15 minutes before opening it to allow the capacitors to discharge
completely.
• Disconnect the inverter (see Section 6, page 50).
Property damage due to rupture of grounding conductors
The components are connected to the inverter via the grounding conductor. If the roof is not disassembled correctly,
the grounding conductors may be pulled out.
• Take care not to damage the grounding conductors during disassembly.
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Disassembling the panels
1. Remove the screws of the front panels using a Torx screwdriver (head size T30).
2. Detach the grounding straps from the panels.
3. Remove the panels.
Mounting the panels
Requirement:
☐ The protective covers in the connection area must be mounted (see Section 11.2.2, page 103).
Procedure:
1. Attach the grounding straps to the panels of the interface cabinet (torque: 8 Nm to 10 Nm).
2. Ensure that the grounding straps are firmly in place.
3. Attach the panels using a Torx screwdriver (torque: 2 Nm to 3 Nm, head size T30).
11.2.2 Disassembling and Mounting the Protective Covers
A
A
A
A
A
A
A
A
Figure 33: Position of the protective covers
Position
Designation
A
Protective cover
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Danger to life due to electric shock or electric arc if live components are touched
• Switch off the inverter and wait at least 15 minutes before opening it to allow the capacitors to discharge
completely.
• Disconnect the inverter (see Section 6, page 50).
Disassembling the protective covers
Requirements:
☐ The panels must be disassembled (see Section 11.2.1, page 102).
Procedure:
• Disassemble the protective covers.
Mounting the protective covers
1. Tighten all protective covers (torque: 5 Nm).
2. Ensure that the protective covers are firmly in place.
11.2.3 Disassembling and Mounting the Ventilation Grids
Disassembling the ventilation grids
1. Release the screws of the right-hand ventilation grid. (head
size:-T40).
2. Pull the lower side of the right-hand ventilation grid forwards to
remove it.
3. Release the screws of the left-hand ventilation grid. (head size:T40).
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4. Pull the lower side of the left-hand ventilation grid forwards to
remove it.
Mounting the ventilation grids
1. Insert the left-hand ventilation grid.
2. Screw the left-hand ventilation grid on (torque: 20 Nm,-head
size T40).
3. Insert the right-hand ventilation grid.
4. Screw the right-hand ventilation grid on (torque: 20 Nm,-head
size T40).
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Bolted Connections
11.3.1 Preparing the Grounding and DC Cables for Connection
Connection overview with one two-hole terminal lug for grounding and DC cables
Figure 34: Design of the connection with one two-hole terminal lug
Position
Designation
A
Nut M12
B
Spring washer
C
Fender washer
D
Connection busbar
E
Tin-plated two-hole terminal lug
F
Screw M12
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Connection overview with one one-hole terminal lug for grounding and DC cables
Figure 35: Design of the connection with one one-hole terminal lug
Position
Designation
A
Nut M12
B
Spring washer
C
Fender washer
D
Connection busbar
E
Tin-plated one-hole terminal lug
F
Screw M12
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Connection overview with two two-hole terminal lugs for DC cables
Figure 36: Design of the connection with two two-hole terminal lugs
Position
Designation
A
Nut M12
B
Spring washer
C
Fender washer
D
Tin-plated two-hole terminal lugs
E
Connection busbar
F
Screw M12
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Connection overview with two one-hole terminal lugs for DC cables
Figure 37: Design of the connection with two one-hole terminal lugs
Position
Designation
A
Nut M12
B
Spring washer
C
Fender washer
D
Tin-plated one-hole terminal lugs
E
Connection busbar
F
Screw M12
Additionally required mounting material (not included in the scope of delivery):
☐ Clean cloth
☐ Ethanol cleaning agent
Procedure:
1. Strip the cable insulation.
2. Fit the cables with terminal lugs.
3. Clean the contact surfaces of the terminal lugs with a clean cloth and ethanol cleaning agent.
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11.3.2 Preparing the AC Connection
Overview of the connection with one one-hole terminal lug
Figure 38: Design of the connection with one one-hole terminal lug
Position
Designation
A
Nut M12
B
Spring washer
C
Fender washer
D
Connection busbar
E
Tin-plated one-hole terminal lug
F
Screw M12
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Connection overview with two one-hole terminal lugs
Figure 39: Design of the connection with two one-hole terminal lugs
Position
Designation
A
Nut M12
B
Spring washer
C
Fender washer
D
Tin-plated one-hole terminal lugs
E
Connection busbar
F
Screw M12
Additionally required mounting material (not included in the scope of delivery):
☐ Clean cloth
☐ Ethanol cleaning agent
Procedure:
1. Strip the cable insulation.
2. Fit the cables with terminal lugs.
3. Clean the contact surfaces of the terminal lugs with a clean cloth and ethanol cleaning agent.
11.4
Clamp Connections
11.4.1 Connecting the Cable to the Spring-Cage Terminals
1. Dismantle the cable.
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2. Strip the insulation of the insulated conductors.
3. Connect the cable in accordance with the circuit diagram.
• Remove the connection plug from the base terminal.
• Insert the screwdriver in the square opening of the
connection plug. This will release the opening of the
connection plug for the insulated conductors.
• Insert the insulated conductors of the cable into the connection plug in accordance with the circuit diagram.
• Remove the screwdriver from the connection plug.
• Plug the connection plug into the base terminal.
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11.4.2 Connecting the Cable Shield Using a Shield Clamping Saddle
1. Remove the shield clamping saddle from the busbar.
2. Press the shield clamping saddle down onto the shield of the
stripped cable until it snaps into place and fasten hand-tight.
11.5
Entering the Password via the Touch Display
Installer access
The "Installer" access level is activated by entering the installer password. The access level is reset after 15
minutes.
Procedure:
1. Select
.
2. Select
.
3. Confirm your entry by selecting
☑ The
11.6
.
symbol appears in the status info line.
User Interface
11.6.1 Logging Into the User Interface
Battery System Controller settings upon delivery
IP address
172.16.1.111
Subnet mask
255.255.0.0
Password for the user group "User"
0000
Password for the user group "Installer"
1111
SC-COM settings upon delivery
The SC-COM has 3 LAN interfaces for connecting nodes. The IP address to be configured in your computer depends
on whether the computer is connected to the service interface of the inverter or the control network.
Network
Default IP address
LAN1: Service interface of the inverter
192.168.100.2*
LAN2: Not used
172.24.1.51
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Network
Default IP address
LAN3: Control network
172.16.1.51
Password for the user groups "Installer" and "User"**
sma
* This IP address cannot be changed.
** If your "user" password is the same as your "installer" password, you will automatically be logged in as an installer.
Network settings of the communication units after commissioning.
If the network settings of the communication units are changed after commissioning, the new network settings must
be used.
Requirements:
☐ Mozilla Firefox must be installed as the web browser.
☐ JavaScript must be enabled in the web browser.
Procedure:
1. Start your web browser.
2. To log into the Battery System Controller user interface, perform the following steps:
• Enter the IP address of the communication unit in the address bar and press the enter key.
☑ The overview "My Plant" opens.
• To change the language, select the desired language in the drop-down list.
• In the drop-down list User, select the desired user group.
• Enter the password in the field Password.
• Select the button [Login].
3. To log into the SC-COM user interface, perform the following steps:
• Enter the IP address of the communication unit in the address bar and press the enter key.
☑ The user interface opens.
• To change the language, select the desired language in the drop-down list Language.
• Enter the password in the field Password.
• Select the button [Login].
11.6.2 Logging Out of the User Interface
Always log out from the user interface when you have finished your work. If you only close the web browser, you will
not be logged out. If the user interface is left idle for 15 minutes, you will be logged out automatically.
Procedure:
• Select the button [Logout].
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12 Function Description
12.1
Operating States
12.1.1 Overview of the Operating States
Connecting the
supply voltage
Stop
Turning the key switch to Stop
Turning the key switch to Start
Turning the key switch to
Start
Stop
Start
Selecting the button
[Fehler quittieren]
Feed-in conditions not met
Grid monitoring
Waiting time expired
Feed-in conditions on
AC grid met
Disturbance
Grid monitoring time
reached
A disturbance has occurred
Startup
Operation
Turning the key switch to Stop
Stop command of BSC
Shutdown
Figure 40: General overview of the operating states of the inverter
12.1.2 Stop
The inverter is switched off. Stop, Fast stop or Remote shutdown active will appear on the touch display. If the key
switch is set to Start, the inverter switches to the operating state "Grid monitoring".
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12.1.3 Grid Monitoring
12.1.3.1 Monitoring the Grid Voltage
In the operating state "Grid monitoring", Waiting for valid AC grid appears on the touch display. The grid limits are
monitored continuously from now on. If no grid error occurs during the grid monitoring time, the AC disconnection unit
closes and the inverter switches to the operating state "Grid monitoring time reached". If the grid limits are exceeded
during the monitoring time, the inverter will restart "Grid monitoring".
You can specify the thresholds and the delay time manually. For voltage monitoring, you can set two limits for
overvoltage and two limits for undervoltage. If the grid voltage increases above the value defined in the parameter
VCtlhhLim or VCtlhLim, the inverter waits for the time defined in the parameter VCtlhhLimTm or VCtlhLimTm and
disconnects from the utility grid.
Figure 41: Temporal inverter behavior when the grid limits are exceeded
Position
Parameter
Description
A
VCtlhhLimTm
Delay time for grid limit level 2
B
VCtlhLimTm
Delay time for grid limit level 1
C
‒
Startup/load operation
D
‒
Grid monitoring
E
‒
Disturbance
1
VCtlhhLim
Grid voltage limit level 2
2
VCtlhLim
Grid voltage limit level 1
3
‒
Connection limit, maximum nominal voltage deviation
4
‒
Grid limit level 1 is breached, timer for B starts counting
5
‒
Grid limit level 2 is breached, timer for A starts counting
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Position
Parameter
Description
6
‒
Grid limit level 2 is breached for delay time level 2 → grid disconnection
7
‒
Grid limit level 1 is breached for delay time level 1 → grid disconnection (has already occurred on level 2)
8
‒
Connection conditions fulfilled → grid monitoring time starts counting
9
‒
Utility grid within valid range during grid monitoring time → grid connection
12.1.3.2 Monitoring the Power Frequency
In the operating state "Grid monitoring", Waiting for valid AC grid appears on the touch display. The grid limits are
monitored continuously from now on. If no grid error occurs during the grid monitoring time, the AC contactor closes
and the inverter switches to the operating state "Grid monitoring time reached". If the grid limits are exceeded during
the monitoring time, the inverter will restart "Grid monitoring".
You can specify the thresholds and delay times manually. For frequency monitoring, three thresholds can be
configured for both overfrequency and underfrequency. For example, at an overfrequency of 50.5 Hz, tripping can
take place after one second, and at an overfrequency of 51.5 Hz already after 0.1 seconds.
Figure 42: Tripping characteristics and time behavior as exemplified by frequency monitoring with the set parameters
12.1.4 Grid Monitoring Time Reached
The inverter is in the operating state "Grid monitoring time reached". If the input voltage exceeds the start voltage Min.
DC voltage [V], the inverter waits until the time specified in the parameter Time constant [s] has elapsed. If the input
voltage does not fall below the start voltage during this time, the inverter checks whether the utility grid is connected. If
a valid AC grid is connected, the inverter switches to the operating state "Startup".
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12.1.5 Shutdown
The inverter is in the operating state "Shutdown". Operation appears on the touch display. If the key switch has been
set to Stop, the inverter switches to the operating state "Stop". The AC contactor and the DC switchgear open
automatically. If the inverter shuts down because the feed-in conditions are no longer met, the inverter switches to the
operating state "Grid monitoring".
12.1.6 Disturbance
If a disturbance occurs during operation, the inverter displays a warning symbol in the touch display. The inverter
behavior depends on the type of disturbance. Certain disturbances cause the inverter to shut down.
12.2
Safety Functions
12.2.1 Manual Shutdown Functions
12.2.1.1 External Fast Stop
The inverter comes equipped with a fast stop input. You have the option of connecting an external switch to this fast
stop input which is activated via a 24 V signal. The external fast stop disconnects the inverter from the utility grid in less
than 100 ms. The inverter has two terminals with a grip range of 0.08 mm to 4 mm for connecting the external fast
stop. The inverter is delivered with open terminals.
The following options are available for configuring the external fast stop:
• External fast stop is deactivated
The terminals of the active fast stop are bridged. The fast stop function is thus deactivated. You will need to bridge
the terminals if required.
• External fast stop operated with internal 24 V supply
An external switch (break contact) is connected to the inverter terminals via the internal supply voltage in the
inverter. When the switch is closed, the relay is activated and the inverter feeds into the grid. If the fast stop is
tripped, the switch opens and the relay is deactivated. The inverter is stopped and no longer feeds into the utility
grid.
With a conductor cross-section of 2.5 mm2, the maximum permissible conductor length is 130 m, and with a
conductor cross-section of 1.5 mm2, the maximum permissible conductor length is 80 m.
• External fast stop operated with external 24 V supply
An external switch (break contact) is connected to the inverter terminals via an external 24 V power supply.
When the switch is closed, the relay is activated and the inverter feeds into the grid. If the fast stop is tripped, the
switch opens and the relay is deactivated. The inverter is stopped and no longer feeds into the utility grid.
To use the external fast stop, an external 24 V power supply buffered for three to five seconds must be available.
The external fast stop must be connected in accordance with the circuit diagram. The external fast-stop function must
be connected via a shielded cable.
Tripping the fast stop
The fast stop should only be tripped in case of imminent danger. Tripping of the fast stop does not entail fast
discharge of the capacitors. If the inverter is to be switched off and properly shut down via an external signal, the
remote shutdown input is to be used.
12.2.1.2 Remote Shutdown
By means of remote shutdown, you can selectively shut down and switch off the inverter within approximately six
seconds, for example, from a control room. The function of the remote shutdown is similar to the stop function of the
key switch.
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The inverter has two terminals with a grip range of 0.08 mm to 4 mm for connecting the remote shutdown unit. The
remote shutdown unit can be connected to an external 24 V supply, or alternatively, the internal 24 V supply of the
fast-stop function can be used.
Use of the remote shutdown will only be possible if the parameter ExlStrStpEna is set to On.
12.2.2 Automatic Shutdown Functions
12.2.2.1 Grid Management Shutdown
If the utility grid becomes unstable, grid management requires that the inverter disconnects from the utility grid
immediately to avoid grid overload. In this event a corresponding Modbus signal will be transmitted by the grid
operator or the safety system at the point of interconnection. The inverter disconnects from the utility grid immediately
and displays error message 9013. After another signal from the grid operator or the safety system at the point of
interconnection, the error will be reset in the inverter.
12.2.2.2 Transformer Protection
A fully hermetic protector can be connected to the inverter. This fully hermetic protector is integrated in the MV
transformer. If a fault occurs in the MV transformer, the inverter immediately shuts down. The inverter has two terminals
with a grip range of 0.08 mm to 4 mm for connecting the transformer monitoring unit. To use the transformer
monitoring unit, an external supply voltage of 230 V ~ must be provided. The transformer monitoring unit must be
connected via a shielded cable. To deactivate this function, the associated parameter must be disabled.
12.2.2.3 Passive Islanding Detection
The inverter is equipped with passive islanding detection. This function can be activated if required. The islanding
detection function detects the formation of stand-alone grids and disconnects the inverter from the utility grid.
Islanding can occur when at the time of utility grid failure, the load in the shut-down sub-grid is roughly equivalent to
the current feed-in power of the PV power plant.
Unlike active islanding detection, with passive islanding detection the utility grid is not actively influenced, but simply
passively monitored. This involves monitoring the speed of the frequency change.
If the power frequency changes by a certain amount in a certain time, a stand-alone grid is detected and the inverter
disconnects from the utility grid. The magnitude of the frequency change and the time in which this change must take
place can be configured via parameters on the grid monitoring relay.
12.2.2.4 Low-Temperature Option
With the "low-temperature option", the operating temperature range is extended to the following range:
−40°C to +62°C. The inverter is in feed-in operation until the switch-off threshold is exceeded. The temperature of the
switch-off threshold is: −25°C.
If the ambient temperature falls below the switch-off threshold, the inverter switches to the operating state "Stop". In
addition, the installed heating elements switch on to protect the components in the interior against too-low
temperatures. As soon as the temperature exceeds the switch-on threshold, the inverter resumes feed-in operation. The
temperature of the switch-on threshold is: −20°C.
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12.2.3 Grounding and Insulation Monitoring
12.2.3.1 Mode of Operation
In grounded storage systems
The ground-fault monitoring is implemented by means of a residual-current monitoring device. If a ground fault occurs,
the residual currents are detected and interrupted.
• Ground fault on the ungrounded terminal
If a ground fault occurs on the ungrounded pole of the battery, the normally ungrounded pole of the battery is
grounded non-specifically by the ground fault and a residual current flows to the grounded pole. This residual
current flows through the ground-fault monitoring device, e.g. the GFDI, and triggers it.
• Ground fault on the grounded terminal
The ground-fault monitoring device is bypassed when a ground fault occurs on the grounded pole of the battery.
A ground fault on the grounded terminal cannot be reliably detected. If an undetected ground fault occurs on the
grounded terminal, this will pose a safety risk. A further ground fault occurring on the ungrounded terminal will
lead to high residual currents that cannot be interrupted by the ground-fault monitoring unit.
Residual current monitoring in grounded systems
In order to ensure the residual current monitoring function in grounded systems, the battery insulation must be
checked at regular intervals. It is therefore advisable to use an additional insulation monitoring device in
grounded systems. This will enable the insulation to be checked at regular intervals.
In ungrounded storage systems
An insulation monitoring device constantly determines the insulation resistance using an active measurement
procedure. As soon as the insulation resistance falls below the warning threshold specified in the insulation monitoring
device, an insulation warning will appear on the touch display. As a result, preventative measures can be taken before
errors such as personal injury due to leakage currents or system failure occur. If the insulation resistance falls below the
configured warning threshold, the storage system can disconnect. Use the parameter IsoErrIgn to activate or
deactivate the disconnection process under fault conditions.
12.2.3.2 GFDI
Depending on the order option, ground-fault monitoring in the inverter may be carried out via ground fault detection
and interruption (GFDI). Here, one pole of the battery is grounded. GFDI is performed via a high-performance K-type
circuit breaker with adjustable operating current. The GFDI is integrated in the inverter and connected between an
input busbar and the grounding busbar.
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A
Figure 43: GFDI
Position
Designation
A
GFDI
12.2.3.3 Remote GFDI
Depending on the order option, ground fault monitoring in the inverter may be carried out via ground fault detection
and interruption with motor drive, in short "Remote GFDI". Here, one pole of the battery is grounded. Remote GFDI
also enables automatic error processing. This reduces downtimes and avoids servicing due to temporary insulation
errors. Remote GFDI is performed via a high-performance K-type circuit breaker with adjustable operating current. The
remote GFDI is integrated in the inverter and connected between an input busbar and the grounding busbar.
A
Figure 44: Remote GFDI
Position
Designation
A
Remote GFDI
If the Remote GFDI trips, initially a temporary error will be assumed and a motor drive will close the Remote GFDI after
a day change. No external switch command is required to close the tripped Remote GFDI.
If the Remote GFDI shall be closed before a day change, the error can be acknowledged immediately.
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In case of failure, a qualified person must check and, if necessary, repair the insulation and then acknowledge the
error.
12.2.3.4 Insulation Monitoring Device
Depending on the order option, an insulation monitoring device monitors the insulation resistance in ungrounded
storage systems.
In load operation, the insulation resistance of the entire system, from the battery to the MV transformer, will be
measured.
Figure 45: Insulation monitoring device
Position
Designation
A
Insulation monitoring device
A measuring circuit and a relay with a change-over contact are integrated in the insulation monitoring device.
The insulation monitoring device is connected between the DC voltage and the grounding conductor. The contacts of
the relay are routed to the customer terminal plate and can be used by the customer to trip a signal light or siren. The
characteristics of the relay are indicated in the circuit diagram.
If the insulation resistance falls below the warning threshold specified in the parameter RisoCtlWarn, the measuring
circuit closes and the LED ALARM1 on the insulation monitoring device is glowing. The error message 3601‒
Warning insulation failure is generated by the inverter. Simultaneously, the insulation monitoring device activates
the relay with change-over contact. This relay is installed in the inverter.
If the insulation resistance falls below the error threshold (1 kΩ), an insulation error has occurred and the LEDs
ALARM1 and ALARM2 on the insulation monitoring device are glowing. In this case, the operating behavior of the
inverter can be set via parameters as follows:
• If the parameter IsoErrIgn is set to Off, the measuring circuit issues a disturbance when the insulation resistance
falls below the error threshold, the inverter switches off and issues the error message 3501 - Insulation Failure.
The LEDs ALARM1 and ALARM2 are glowing.
• If the parameter IsoErrIgn is set to On, the error message from the measuring circuit is ignored when the
insulation resistance falls below the error threshold. The inverter continues to feed into the grid and generates the
error message 3504 ‒ Insulation failure ignored.
• If the parameter IsoErrIgn is set to Run and the insulation resistance falls below the error threshold, the error
message from the measuring circuit will only be ignored if the inverter is in feed-in operation. In feed-in operation,
the inverter continues to feed into the grid and generates the error message 3504 ‒ Insulation failure ignored.
If the insulation resistance falls below the error threshold in another operating state, the error is not ignored and
the inverter does not switch to feed-in operation. The error message 3501 ‒ Insulation Failure appears on the
touch display. The LEDs ALARM1 and ALARM2 are glowing.
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Type of insulation monitoring device used
The insulation monitoring device used is the A-ISOMETER iso-PV1685 device supplied by Bender GmbH & Co. KG.
12.2.3.5 GFDI and Insulation Monitoring Device
With the order option "GFDI and Insulation Monitoring", it is possible to temporarily disable the battery grounding and
to check the insulation via the integrated insulation monitoring device.
B
A
Figure 46: GFDI and insulation monitoring
Position
Designation
A
Insulation monitoring device
B
GFDI
When the GFDI is closed, the battery is grounded. In this state, the insulation resistance cannot be determined.
When the GFDI is open, grounding is disabled. In this state, the insulation monitoring device continuously measures the
insulation resistance. In load operation, the insulation resistance of the entire system, from the PV array to the MV
transformer, will be measured. If the inverter is in the operating state "Grid monitoring", only the insulation resistance
from the battery to the inverter will be measured.
Insulation monitoring should be performed in load operation. This will ensure that all parts of the system are included in
the insulation measurement.
Insulation monitoring
The insulation monitoring device will start measuring once the GFDI is open. The insulation monitoring device will
initially assume that the insulation is poor. If the parameter IsoErrIgn is set to Off, the inverter will switch off
temporarily.
The insulation monitoring device takes approximately five minutes to detect the correct insulation resistance. The value
of the insulation resistance can be read off from the user interface in the instantaneous value Riso. If the insulation is
intact, the inverter switches back to load operation. Once the insulation monitoring process is complete, the GFDI
should be closed again, thus enabling the battery to revert to grounded operation.
If after approximately five minutes one of the errors 3501 ‒ Insulation Failure, 3504 ‒ Insulation failure ignored
or 3601 ‒ Warning insulation error is displayed, the insulation is defective. In this case, a qualified person will
need to check and, if necessary, repair the insulation and then acknowledge the error.
Type of insulation monitoring device used
The insulation monitoring device used is the A-ISOMETER iso-PV1685 device supplied by Bender GmbH & Co. KG.
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12.2.3.6 Remote GFDI and Insulation Monitoring Device
The order option "Remote GFDI and Insulation Monitoring" lets you automatically clear faults, temporarily disconnect
the battery from ground and check the insulation with the integrated insulation monitoring device.
B
A
Figure 47: Remote GFDI and Insulation Monitoring Device
Position
Designation
A
Insulation monitoring device
B
Remote GFDI
When the Remote GFDI is closed, the battery is grounded. In this state, the insulation resistance cannot be determined.
If the Remote GFDI trips, initially a temporary error will be assumed and a motor drive will close the Remote GFDI after
a defined waiting time. No external switch command is required to close the tripped Remote GFDI. The inverter can
switch back to feed-in operation after a waiting time.
In the default setting of the inverter, the software will attempt to start the Remote GFDI up to three times per day.
If the Remote GFDI is tripped on several consecutive days, the software assumes a permanent insulation error and the
inverter will no longer switch back on. In this case, a qualified person will need to check and, if necessary, repair the
insulation and then acknowledge the error.
When the Remote GFDI is open, the grounding connection is disabled. In this state, the insulation monitoring device
continuously measures the insulation resistance. In load operation, the insulation resistance of the entire system, from
the battery to the MV transformer, will be measured. If the inverter is in the operating state "Grid monitoring", only the
insulation resistance from the battery to the inverter will be measured.
Insulation monitoring should be performed in load operation. This will ensure that all parts of the system are included in
the insulation measurement.
Insulation monitoring
To disconnect the battery from ground, the parameter RemMntSvc must be set to On. This will open the Remote GFDI
by means of a motor drive.
If the Remote GFDI has been opened by a motor drive via the parameter RemMntSvc, the insulation monitoring
device will start measuring after the waiting time defined in parameter IsoMeasDly has elapsed. This allows the
insulation monitoring device to determine the insulation resistance without interrupting feed-in operation. If an insulation
error is present, this will only be taken into account at the end of the waiting time.
Once the insulation monitoring process is completed, the parameter RemMntSvc should be set to Off, which
reconnects the battery to ground.
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If after approximately five minutes one of the errors 3501 ‒ Insulation Failure, 3504 ‒ Insulation failure ignored
or 3601 ‒ Warning insulation failure is displayed, the insulation is defective. In this case, a qualified person will
need to check and, if necessary, repair the insulation and then acknowledge the error.
Type of insulation monitoring device used
The insulation monitoring device used is the A-ISOMETER iso-PV1685 device supplied by Bender GmbH & Co. KG.
12.3
Grid Management Services
12.3.1 Requirements for Grid Management Services
Due to the growing number of PV power plants feeding into the utility grid, these PV power plants increasingly have to
take on feed-in management functions. In Germany, for example, they are obliged to offer grid management services.
First and foremost, the grid operator must be able to limit the power of the PV power plant by remote control and
temporarily reduce it to zero in critical cases. The relevant control commands of the grid operator must therefore be
transmitted to the inverters quickly and reliably and implemented accordingly. The following figure shows how the
specifications of the grid operator are implemented. The specifications of the grid operator are sent to the inverters by
the Power Reducer Box or the Power Plant Controller.
Figure 48: Principle of grid integration
As an alternative to the Power Reducer Box or Power Plant Controller, there are two other ways of enabling grid
management services:
• Reception of signals via two analog inputs on the inverter
• Manual adjustment of the specifications via parameters on the inverter
12.3.2 Dynamic Grid Support (FRT)
12.3.2.1 Full and Limited Dynamic Grid Support (FRT)
With dynamic grid support (Fault Ride Through ‒ FRT), the inverter supports the utility grid during a brief grid-voltage
dip (Low Voltage Ride Through ‒ LVRT) or during a short period of overvoltage (High Voltage Ride Through ‒ HVRT).
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With full dynamic grid support, grid support is ensured by feeding in reactive current.
With limited dynamic grid support, the inverter interrupts grid feed-in during a grid instability without disconnecting
from the utility grid.
Q at Night and dynamic grid support
Limited dynamic grid support is available in the operating state "Q at Night".
The dynamic grid support function is activated via the parameter FRTEna. The inverter behavior can be controlled via
the parameter FRTMod. The level of reactive current provided with full dynamic grid support is determined via the
parameter FRTArGraNom. The grid limits and deactivation delays vary depending on the country.
12.3.2.2 Grid Support in Case of Untervoltage (LVRT)
The inverter can support the utility grid during a brief grid-voltage dip. The behavior of the inverter depends on the
percentage ratio of grid voltage Vgrid to nominal voltage V.
Figure 49: Maximum duration of a voltage dip that the inverter can work through without disconnecting from the utility grid
Ratio Vgrid/V
Inverter behavior
90% to 100%
The ratio of grid voltage Vgrid to nominal voltage V is in the normal range and the inverter
feeds in without any problems.
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Ratio Vgrid/V
Inverter behavior
20% to 90%
The ratio of grid voltage Vgrid to nominal voltage V is in the critical range. There is a disturbance in the utility grid.
While this disturbance remains present, the inverter supports the utility grid with reactive current.
The inverter can bridge disturbances of up to five seconds without disconnecting from the utility grid.
If the set grid monitoring time is exceeded during this period, the inverter disconnects from
the utility grid.
0% to 20%
The ratio of grid voltage Vgrid to nominal voltage V is in the critical range. There is a disturbance in the utility grid. While this disturbance remains present, the inverter supports the utility grid with reactive current. The inverter can bridge disturbances of up to 1.2 seconds without disconnecting from the utility grid. The requirement is that the ratio Vgrid/V was at least
90% before the error occurred.
If the set grid monitoring time is exceeded during this period, the inverter disconnects from
the utility grid.
The tripping threshold is defined by the parameter FRTDbVolNomMin.
12.3.2.3 Dynamic Undervoltage Detection
The dynamic undervoltage detection extends the grid support in the event of undervoltage and changes the switch-off
behavior. The grid limits, which are stepped by default, are replaced by a continuous grid-limit function.
Figure 50: Maximum duration of a voltage dip that the inverter can work through without disconnecting from the utility grid
Position
Parameter
Description
1
VCtllLim
Grid voltage limit level 1
2
VCtlllLim
Grid voltage limit level 2
3
−
Time at which the inverter disconnects from the utility grid.
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Position
Parameter
Description
A
VCtllCharTm
The delay time of the dynamic undervoltage detection defines the intersection of the continuous grid-limit function with the time axis.
B
VCtllLimTm
Delay time for grid limit level 1
The function of the dynamic undervoltage detection is activated via the parameter VCtllCharEna. The function of the
dynamic undervoltage detection is activated by default for Romania.
12.3.2.4 Grid Support in the Event of Overvoltage (HVRT)
In addition to providing grid support in the event of undervoltage, the inverter can support the utility grid in the event of
short-term overvoltage. The behavior of the inverter depends on the percentage ratio of grid voltage Vgrid to nominal
voltage V.
Figure 51: Maximum duration of overvoltage that the inverter can work through without disconnecting from the utility grid (example)
Ratio Vgrid/V
Inverter behavior
Greater than 130%
The ratio of grid voltage Vgrid to nominal voltage V is in the critical range. There is a disturbance in the utility grid.
The inverter disconnects from the utility grid.
115% to 130%
The ratio of grid voltage Vgrid to nominal voltage V is in the critical range. There is a disturbance in the utility grid.
While this disturbance remains present, the inverter supports the utility grid with reactive current. The inverter can bridge disturbances of up to 3 seconds without disconnecting from the
utility grid.
If the set grid monitoring time is exceeded during this period, the inverter disconnects from
the utility grid.
100% to 115%
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The ratio of grid voltage Vgrid to nominal voltage V is in the normal range and the inverter
feeds in without any problems.
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12 Function Description
The tripping threshold is defined by the parameter FRTDbVolNomMax.
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13 Operating Data and Parameters
13.1
BSC Operating Data and Parameters
Overview > Table View
Name
Description
Linux OS Version
BSC operating system version
Communication protocol version
SCADA
Modbus profile version of the SCADA system
Communication protocol version
inverter
Modbus profile version of the inverter
Communication protocol version
battery
Modbus profile version of the battery
Serial number BSC
BSC serial number
BSC software version
BSC software version
Serial number Inverter 1
Serial number of inverter 1
Software version Inverter 1
Software version of the operation control unit of inverter 1
Serial number Inverter 2
Serial number of inverter 2
Software version Inverter 2
Software version of the operation control unit of inverter 2
Measurements > Inverter
Name
Description
Active power [kW]
Current active power in kW
Reactive power [kVAr]
Current reactive power in kvar
Frequency [Hz]
Power frequency in Hz
AC Voltage [V]
Current AC voltage at the inverter AC connection in V
AC current [A]
Current AC current at the inverter AC connection in A
DC Terminal Voltage [V]
Current DC voltage at the inverter DC connection in V
DC-bus voltage [V]
Current DC voltage of the DC link in V
DC Terminal Current [A]
Current DC current at the inverter DC connection in A
Insulation resistance
Most recent measurement of insulation resistance
State
Inverter operating mode
Measurements > Battery
Name
Description
Number of strings connected
Number of the connected strings/total number of strings
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Name
Description
Connected Strings - State of charge [%]
Current state of charge of the battery in %
SoH [%]
Current battery capacity (SoH) in %
Connected strings - Remaining capacity [Ah]
Available capacity of the connected strings in Ah
DC Terminal Voltage [V]
DC voltage at the battery connection in V
DC Terminal Current [A]
DC current at the battery connection in A
Temperature battery [°C]
Current temperature of the battery in °C
Maximal charge power [kW]
Maximum charge power of the battery in kW
Maximal discharge power [kW]
Maximum discharge power of the battery in kW
Maximum battery temperature [°C]
Current minimum temperature within the battery in °C
Minimum battery temperature [°C]
Current maximum temperature within the battery in °C
13.2
SC-COM Operating Data and Parameters
Parameters for frequency-dependent active power control (see Section 7.5.2.2, page 61)
Name
Description
P_HzxValn
Frequency value as a percentage of the nominal frequency at support point n of the P(f) characteristic curve
P_HzyValn
Value of the power change at support point n of the P(f) characteristic curve
Parameters for frequency-dependent reactive power control (see Section 7.5.2.3, page 62)
Name
Description
Q_VxValn
Voltage value as a percentage of the nominal voltage at support point n of the Q(U) characteristic curve
Q_VyValn
Value of the power change at support point n of the Q(U) characteristic curve
Parameters for monitoring the grid voltage (see Section 12.1.3.1, page 116)
Name
Description
VCtlMax
Threshold for overvoltage release level 3
VCtlMaxTm
Tripping time for overvoltage level 3
VCtlhhLim
Threshold for overvoltage release level 2
VCtlhhLimTm
Tripping time for overvoltage level 2
VCtlhLim
Threshold for overvoltage release level 1
VCtlhLimTm
Tripping time for overvoltage level 1
VCtllLim
Threshold for undervoltage release level 1
VCtllLimTm
Tripping time for undervoltage level 1
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Name
Description
VCtlllLim
Threshold for undervoltage release level 2
VCtlllLimTm
Tripping time for undervoltage level 2
VCtlMin
Threshold for undervoltage release level 3
VCtlMinTm
Tripping time for undervoltage level 3
SMA Solar Technology AG
Parameters for inverter behavior in the event of communication disturbances (see Section 7.5.3,
page 63)
Name
Description
DeaLnkBeh
Inverter behavior in the event of communication disturbances
DeaLnkTmOutErr
Holding time of the Deadlink behavior
PreCtrlMod
Inverter operating mode in the event of communication disturbances
PreDcCurSpnt
Setpoint for DC current in A
PreDcVtgSpnt
Setpoint for DC voltage in V
PrePwrAtSpnt
Setpoint for active power in kW
PrePwrRtSpnt
Setpoint for reactive power in kvar
PreDrpF0
Setpoint for the P(f) characteristic curve offset for frequency-dependent active power control
PreDrpU0
Setpoint for the Q(U) characteristic curve offset for grid voltage-dependent reactive power
control
Further parameters
Name
Description
CntrySet
Country designation
EnaAID
Activate islanding detection
ExlTrfErrEna
Activation of hermetic protection of MV transformer
TrfVolExlHi
Line-to-line voltage on overvoltage side of external transformer
TrfVolExlLo
Line-to-line voltage on undervoltage side of external transformer
FRTMod
Dynamic Grid Support
SpntOpExt
Remote activation of the system with an external "start operation" signal
SpntRemEna
Remote activation of the system
VarGra
Gradient of reactive power change
VRtg
Nominal line-to-line voltage of the utility grid
WGra
Gradient of active power change with external setpoint
WGraEna
Activation of the active power change gradient
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Name
Description
WGraDroop
Gradient of active power change via P(f) function
WGraDroopEna
Activation of the active power change gradient via P(f) function
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14 Technical Data
14.1
Sunny Central Storage 500
DC connection
Maximum DC Power
Voltage range
Rated input voltage
Maximum input current
Number of DC inputs
560 kW
430 V to 850 V
449 V
1400 A
4 per potential
AC connection
Rated power at +25°C / +50°C
Nominal AC voltage
550 kVA / 500 kVA
270 V
Nominal AC voltage range
243 V to 310 V
AC power frequency
50 Hz / 60 Hz
AC power frequency range
47 Hz to 63 Hz
Rated frequency
50 Hz
Rated grid voltage
270 V
Maximum total harmonic distortion
0.03
Maximum AC current
1411 A
Maximum residual current at the AC output
3500 A
Maximum overcurrent protection at output
50000 A
Power factor at rated power
Displacement power factor cos φ
1
0 overexcited to 0 underexcited
Feed-in phases
3
Connection phases
3
Inrush current of the internal power supply
48 A (100 ms)
Efficiency
Maximum efficiency
98.6%
Protective Devices
DC overvoltage protection
Type I
Lightning protection as per IEC 62305-1
Lightning protection level III
Surge arrester for auxiliary power supply
Yes
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Protective Devices
Protection class in accordance with IEC 62103
I
Overvoltage category in accordance with IEC 60664-1
III
General Data
Width x height x depth
Weight
2562 mm x 2272 mm x 956 mm
1900 kg
Operating temperature range
−25°C to +62°C
Operating temperature range for low-temperature option
−40°C to +62°C
Noise emission at a distance of 10 m
63 db(A)
Self-consumption in operation
< 1900 W
Standby consumption
< 100 W
External supply voltage
230 V/400 V (3/N/PE), 50 Hz/60 Hz
Degree of protection of electronics
IP54
Degree of protection of the connection area
IP43
Maximum permissible value for relative humidity (noncondensing)
15% to 95%
Maximum operating altitude above mean sea level
2000 m
Maximum operating altitude above MSL for option "Installation at high altitudes"
4000 m
Fresh air consumption
14.2
3000 m³/h
Sunny Central Storage 630
DC connection
Maximum DC Power
Voltage range
Rated input voltage
Maximum input current
Number of DC inputs
713 kW
500 V to 850 V
529 V
1400 A
4 per potential
AC connection
Rated power at +25°C / +50°C
Nominal AC voltage
700 kVA / 630 kVA
315 V
Nominal AC voltage range
284 V to 362 V
AC power frequency
50 Hz / 60 Hz
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AC connection
AC power frequency range
47 Hz to 63 Hz
Rated frequency
50 Hz
Rated grid voltage
315 V
Maximum total harmonic distortion
0.03
Maximum AC current
1411 A
Maximum residual current at the AC output
3500 A
Maximum overcurrent protection at output
50000 A
Power factor at rated power
Displacement power factor cos φ
1
0 overexcited to 0 underexcited
Feed-in phases
3
Connection phases
3
Inrush current of the internal power supply
48 A (100 ms)
Efficiency
Maximum efficiency
98.7%
Protective Devices
DC overvoltage protection
Type I
Lightning protection as per IEC 62305-1
Lightning protection level III
Surge arrester for auxiliary power supply
Yes
Protection class in accordance with IEC 62103
I
Overvoltage category in accordance with IEC 60664-1
III
General Data
Width x height x depth
Weight
2562 mm x 2272 mm x 956 mm
1900 kg
Operating temperature range
−25°C to +62°C
Operating temperature range for low-temperature option
−40°C to +62°C
Noise emission at a distance of 10 m
64 db(A)
Self-consumption in operation
< 1900 W
Standby consumption
< 100 W
External supply voltage
Degree of protection of electronics
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230 V/400 V (3/N/PE), 50 Hz/60 Hz
IP54
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14 Technical Data
SMA Solar Technology AG
General Data
Degree of protection of the connection area
Maximum permissible value for relative humidity (noncondensing)
IP43
15% to 95%
Maximum operating altitude above mean sea level
2000 m
Maximum operating altitude above MSL for option "Installation at high altitudes"
4000 m
Fresh air consumption
14.3
3000 m³/h
Sunny Central Storage 720
DC connection
Maximum DC Power
Voltage range
Rated input voltage
Maximum input current
Number of DC inputs
808 kW
480 V to 850 V
577 V
1400 A
4 per potential
AC connection
Rated power at +25°C / +50°C
Nominal AC voltage
792 kVA / 720 kVA
324 V
Nominal AC voltage range
292 V to 372 V
AC power frequency
50 Hz / 60 Hz
AC power frequency range
47 Hz to 63 Hz
Rated frequency
50 Hz
Rated grid voltage
324 V
Maximum total harmonic distortion
0.03
Maximum AC current
1411 A
Maximum residual current at the AC output
3500 A
Maximum overcurrent protection at output
50000 A
Power factor at rated power
Displacement power factor cos φ
1
0 overexcited to 0 underexcited
Feed-in phases
3
Connection phases
3
Inrush current of the internal power supply
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Efficiency
Maximum efficiency
98.6%
Protective Devices
DC overvoltage protection
Type I
Lightning protection as per IEC 62305-1
Lightning protection level III
Surge arrester for auxiliary power supply
Yes
Protection class in accordance with IEC 62103
I
Overvoltage category in accordance with IEC 60664-1
III
General Data
Width x height x depth
Weight
2562 mm x 2272 mm x 956 mm
1900 kg
Operating temperature range
−25°C to +62°C
Operating temperature range for low-temperature option
−40°C to +62°C
Noise emission at a distance of 10 m
64 db(A)
Self-consumption in operation
< 1950 W
Standby consumption
< 100 W
External supply voltage
230 V/400 V (3/N/PE), 50 Hz/60 Hz
Degree of protection of electronics
IP54
Degree of protection of the connection area
IP43
Maximum permissible value for relative humidity (noncondensing)
15% to 95%
Maximum operating altitude above mean sea level
2000 m
Maximum operating altitude above MSL for option "Installation at high altitudes"
4000 m
Fresh air consumption
14.4
3000 m³/h
Sunny Central Storage 760
DC connection
Maximum DC Power
Voltage range
Rated input voltage
Maximum input current
Number of DC inputs
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853 kW
505 V to 850 V
609 V
1400 A
4 per potential
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AC connection
Rated power at +25°C / +50°C
Nominal AC voltage
836 kVA / 760 kVA
342 V
Nominal AC voltage range
308 V to 393 V
AC power frequency
50 Hz / 60 Hz
AC power frequency range
47 Hz to 63 Hz
Rated frequency
50 Hz
Rated grid voltage
342 V
Maximum total harmonic distortion
0.03
Maximum AC current
1411 A
Maximum residual current at the AC output
3500 A
Maximum overcurrent protection at output
50000 A
Power factor at rated power
Displacement power factor cos φ
1
0 overexcited to 0 underexcited
Feed-in phases
3
Connection phases
3
Inrush current of the internal power supply
48 A (100 ms)
Efficiency
Maximum efficiency
98.6%
Protective Devices
DC overvoltage protection
Type I
Lightning protection as per IEC 62305-1
Lightning protection level III
Surge arrester for auxiliary power supply
Yes
Protection class in accordance with IEC 62103
I
Overvoltage category in accordance with IEC 60664-1
III
General Data
Width x height x depth
Weight
2562 mm x 2272 mm x 956 mm
1900 kg
Operating temperature range
−25°C to +62°C
Operating temperature range for low-temperature option
−40°C to +62°C
Noise emission at a distance of 10 m
Operating Manual
64 db(A)
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General Data
Self-consumption in operation
< 1950 W
Standby consumption
< 100 W
External supply voltage
230 V/400 V (3/N/PE), 50 Hz/60 Hz
Degree of protection of electronics
IP54
Degree of protection of the connection area
IP43
Maximum permissible value for relative humidity (noncondensing)
15% to 95%
Maximum operating altitude above mean sea level
2000 m
Maximum operating altitude above MSL for option "Installation at high altitudes"
4000 m
Fresh air consumption
14.5
3000 m³/h
Sunny Central Storage 800
DC connection
Maximum DC Power
Voltage range
Rated input voltage
Maximum input current
Number of DC inputs
898 kW
530 V to 950 V
641 V
1400 A
4 per potential
AC connection
Rated power at +25°C / +50°C
Nominal AC voltage
880 kVA / 800 kVA
360 V
Nominal AC voltage range
324 V to 414 V
AC power frequency
50 Hz / 60 Hz
AC power frequency range
47 Hz to 63 Hz
Rated frequency
50 Hz
Rated grid voltage
360 V
Maximum total harmonic distortion
0.03
Maximum AC current
1411 A
Maximum residual current at the AC output
3500 A
Maximum overcurrent protection at output
50000 A
Power factor at rated power
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AC connection
Displacement power factor cos φ
0 overexcited to 0 underexcited
Feed-in phases
3
Connection phases
3
Inrush current of the internal power supply
48 A (100 ms)
Efficiency
Maximum efficiency
98.6%
Protective Devices
DC overvoltage protection
Type I
Lightning protection as per IEC 62305-1
Lightning protection level III
Surge arrester for auxiliary power supply
Yes
Protection class in accordance with IEC 62103
I
Overvoltage category in accordance with IEC 60664-1
III
General Data
Width x height x depth
Weight
2562 mm x 2272 mm x 956 mm
1900 kg
Operating temperature range
−25°C to +62°C
Operating temperature range for low-temperature option
−40°C to +62°C
Noise emission at a distance of 10 m
64 db(A)
Self-consumption in operation
< 1950 W
Standby consumption
< 100 W
External supply voltage
230 V/400 V (3/N/PE), 50 Hz/60 Hz
Degree of protection of electronics
IP54
Degree of protection of the connection area
IP43
Maximum permissible value for relative humidity (noncondensing)
15% to 95%
Maximum operating altitude above mean sea level
2000 m
Maximum operating altitude above MSL for option "Installation at high altitudes"
4000 m
Fresh air consumption
Operating Manual
3000 m³/h
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14.6
SMA Solar Technology AG
Sunny Central Storage 850
DC connection
Maximum DC Power
Voltage range
Rated input voltage
Maximum input current
Number of DC inputs
954 kW
568 V to 950 V
681 V
1400 A
4 per potential
AC connection
Rated power at +25°C / +50°C
Nominal AC voltage
935 kVA/ 850 kVA
386 V
Nominal AC voltage range
348 V to 443 V
AC power frequency
50 Hz / 60 Hz
AC power frequency range
47 Hz to 63 Hz
Rated frequency
50 Hz
Rated grid voltage
386 V
Maximum total harmonic distortion
0.03
Maximum AC current
1411 A
Maximum residual current at the AC output
3500 A
Maximum overcurrent protection at output
50000 A
Power factor at rated power
Displacement power factor cos φ
1
0 overexcited to 0 underexcited
Feed-in phases
3
Connection phases
3
Inrush current of the internal power supply
48 A (100 ms)
Efficiency
Maximum efficiency
98.6%
Protective Devices
DC overvoltage protection
Type I
Lightning protection as per IEC 62305-1
Lightning protection level III
Surge arrester for auxiliary power supply
Yes
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Protective Devices
Protection class in accordance with IEC 62103
I
Overvoltage category in accordance with IEC 60664-1
III
General Data
Width x height x depth
Weight
2562 mm x 2272 mm x 956 mm
1900 kg
Operating temperature range
−25°C to +62°C
Operating temperature range for low-temperature option
−40°C to +62°C
Noise emission at a distance of 10 m
63 db(A)
Self-consumption in operation
< 1950 W
Standby consumption
< 100 W
External supply voltage
230 V/400 V (3/N/PE), 50 Hz/60 Hz
Degree of protection of electronics
IP54
Degree of protection of the connection area
IP43
Maximum permissible value for relative humidity (noncondensing)
15% to 95%
Maximum operating altitude above mean sea level
2000 m
Maximum operating altitude above MSL for option "Installation at high altitudes"
4000 m
Fresh air consumption
14.7
3000 m³/h
Sunny Central Storage 900
DC connection
Maximum DC Power
Voltage range
Rated input voltage
Maximum input current
Number of DC inputs
1010 kW
596 V to 950 V
722 V
1400 A
4 per potential
AC connection
Rated power at +25°C / +50°C
Nominal AC voltage
990 kVA / 900 kVA
405 V
Nominal AC voltage range
365 V to 465 V
AC power frequency
50 Hz / 60 Hz
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AC connection
AC power frequency range
47 Hz to 63 Hz
Rated frequency
50 Hz
Rated grid voltage
405 V
Maximum total harmonic distortion
0.03
Maximum AC current
1411 A
Maximum residual current at the AC output
3500 A
Maximum overcurrent protection at output
50000 A
Power factor at rated power
Displacement power factor cos φ
1
0 overexcited to 0 underexcited
Feed-in phases
3
Connection phases
3
Inrush current of the internal power supply
48 A (100 ms)
Efficiency
Maximum efficiency
98.6%
Protective Devices
DC overvoltage protection
Type I
Lightning protection as per IEC 62305-1
Lightning protection level III
Surge arrester for auxiliary power supply
Yes
Protection class in accordance with IEC 62103
I
Overvoltage category in accordance with IEC 60664-1
III
General Data
Width x height x depth
Weight
2562 mm x 2272 mm x 956 mm
1900 kg
Operating temperature range
−25°C to +62°C
Operating temperature range for low-temperature option
−40°C to +62°C
Noise emission at a distance of 10 m
64 db(A)
Self-consumption in operation
< 1950 W
Standby consumption
< 100 W
External supply voltage
Degree of protection of electronics
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IP54
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General Data
Degree of protection of the connection area
Maximum permissible value for relative humidity (noncondensing)
IP43
15% to 95%
Maximum operating altitude above mean sea level
2000 m
Maximum operating altitude above MSL for option "Installation at high altitudes"
4000 m
Fresh air consumption
14.8
3000 m³/h
Sunny Central Storage 1000
DC connection
Maximum DC Power
Voltage range
Rated input voltage
Maximum input current
Number of DC inputs
1122 kW
596 V to 900 V
688 V
1635 A
4 per potential
AC connection
Rated power at +25°C / +40°C / +50°C
Nominal AC voltage
1100 kVA / 1000 kVA / 900 kVA
405 V
Nominal AC voltage range
365 V to 465 V
AC power frequency
50 Hz / 60 Hz
AC power frequency range
47 Hz to 63 Hz
Rated frequency
50 Hz
Rated grid voltage
405 V
Maximum total harmonic distortion
0.03
Maximum AC current
1568 A
Maximum residual current at the AC output
3500 A
Maximum overcurrent protection at output
50000 A
Power factor at rated power
Displacement power factor cos φ
1
0 overexcited to 0 underexcited
Feed-in phases
3
Connection phases
3
Inrush current of the internal power supply
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Efficiency
Maximum efficiency
98.7 %
Protective Devices
DC overvoltage protection
Type I
Lightning protection as per IEC 62305-1
Lightning protection level III
Surge arrester for auxiliary power supply
Yes
Protection class in accordance with IEC 62103
I
Overvoltage category in accordance with IEC 60664-1
III
General Data
Width x height x depth
Weight
2562 mm x 2272 mm x 956 mm
1900 kg
Operating temperature range
−25°C to +62°C
Operating temperature range for low-temperature option
−40°C to +62°C
Noise emission at a distance of 10 m
68 db(A)
Self-consumption in operation
< 1950 W
Standby consumption
< 100 W
External supply voltage
230 V/400 V (3/N/PE), 50 Hz/60 Hz
Degree of protection of electronics
IP54
Degree of protection of the connection area
IP43
Maximum permissible value for relative humidity (noncondensing)
15% to 95%
Maximum operating altitude above mean sea level
2000 m
Maximum operating altitude above MSL for option "Installation at high altitudes"
4000 m
Fresh air consumption
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15 Appendix
15.1
Information for Installation
15.1.1 Requirements for the Mounting Location
☐ The mounting location must be freely accessible at all times.
☐ The fresh air requirement of the inverter amounting to 3000 m3/h must be assured.
☐ The mounting location must be below the maximum installation altitude.
☐ The ambient temperature must be within the operating temperature range.
☐ The fresh air must meet the 4S2 classification.
Air Quality Classification for Mechanically Active Substances
Ambient conditions for stationary application
Class 4S2
a) Sand in air [mg/m3]
300
b) Dust (suspended matter) [mg/m3]
5.0
c) Dust (precipitation) [mg/m3]
20
Installation sites where appropriate measures are taken to keep dust levels to a minimum
x
Installation sites where no special measures have been taken to reduce the sand or
dust levels and which are not located in the vicinity of sand or dust sources
x
The inverter is protected against salt spray in accordance with EN 60721-3-4 Class 4C2 and can be operated near
the coast, for example.
Air Quality Classification for Chemically Active Substances
Ambient conditions for stationary application
Class 4C2
Mean value
a) Sea salt
Limiting value
Occurrence of salt spray
b) Sulfur dioxide [mg/m3]
0.3
1.0
c) Hydrogen sulfide [mg/m3]
0.1
0.5
d) Chlorine [mg/m3]
0.1
0.3
e) Hydrogen chloride [mg/m3]
0.1
0.5
f) Hydrogen fluoride [mg/m3]
0.01
0.03
g) Ammonia [mg/m3]
1.0
3.0
h) Ozone [mg/m3]
0.05
0.1
i) Nitrogen oxides [mg/m3]
0.5
1.0
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Ambient conditions for stationary application
Class 4C2
Mean value
Limiting value
Installation sites in rural or densely populated areas with
little industry and moderate traffic volume
x
Installation sites in densely populated areas with industry
and high traffic volume
x
15.1.2 Requirements for the Support Surface
If you are using a base from SMA Solar Technology AG, you must prepare the mounting location with a subgrade.
The excavation pit must have the following properties:
☐ The pit must be excavated to the respective height of the base.
☐ A work area around the station must be available. The work area is at least: 500 mm.
☐ The corners of the excavation pit must be clearly marked.
☐ It must be possible to dump excavated material away from access routes so that the truck is not hindered during
transport.
The subgrade must have the following properties:
☐ The subgrade must be made of stone-free, compactable material without sharp edges, e.g. a horizontal lean
concrete plate.
☐ The compression ratio of the subgrade must be 98%.
☐ The soil pressure must be 150 kN/m2.
☐ The unevenness must be less than 0.25% (as per DIN 18202: table 3, line 4).
☐ The subgrade must have the following minimum dimensions:
Position
Designation
Width
2600 mm
Depth
1000 mm + double foundation extension (0 mm to 300 mm)
Height
150 mm
☐ The preparation of the subgrade must ensure that the base sits
about 150 mm above ground level after installation. This will
ensure that the inverter is protected against high water levels
after heavy rain or a snow melt.
☐ If the ground is to be paved up to the inverter, a gap must be maintained between the inverter and the paved
area. The gap width is: 30 mm.
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15.1.3 Requirements for the Foundation and Cable Routing
If you do not use a base from SMA Solar Technology AG, you can also position the inverter on a foundation.
The foundation must have the following properties:
☐ The foundation must be suitable for the weight of the inverter. The inverter weighs: 1900 kg.
☐ The unevenness must be less than 0.25% (as per DIN 18202: table 3, line 4).
☐ The inclination of the foundation must be between 0.5% and 1%. This will allow rain water to drain from
underneath the inverter.
☐ The foundation must have at least the following dimensions:
Position
Designation
Width
2600 mm
Depth
1000 mm
☐ Cable feedthroughs must be provided in the foundation.
☐ For convenient operation and trouble-free maintenance, it is recommended to extend the inverter foundation on all
sides or to provide a level, reinforced surface around the inverter. The foundation must have the following
minimum dimensions:
Position
Designation
Width
3400 mm
Depth
1800 mm
☐ If the ground is to be paved up to the inverter foundation, a gap must be maintained between the foundation and
the paved area. The gap width is: 30 mm.
Requirements for the cable arrangement:
☐ Openings for the cables must be located in the foundation underneath the interface cabinet.
☐ Empty conduits for the cables must be laid under the foundation.
☐ Cables for communication, control and supply voltage must be separated from AC and DC cables.
☐ There must be sufficient space available to lay the cables properly.
Stage at which cables are laid
The stage at which the cables are laid must be determined individually for each system.
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15.1.4 Requirements for Cable Routing between MV Transformer and Inverter
Risk of fire due to overheating of cables if different cable lengths are used
Cables of differing lengths may cause the cables to overheat and catch fire. This can result in death or serious injury.
• All line conductors from the inverter to the MV transformer must be of the same length.
• The cable length between the connection points must not exceed a maximum length. Maximum cable length:
15 m.
Cable and cable laying requirements:
☐ The cables must be designed for the maximum voltages to ground.
For the Sunny Central Storage 500 / 630 / 720 / 760 / 800, the maximum voltage to ground is: ±1450 V.
For the Sunny Central Storage 850 / 900 / 1000, the maximum voltage to ground is: ±1600 V.
☐ The cables must be designed for the maximum root-mean-square value. Maximum root-mean-square value: 800 V.
☐ Do not attach more than four cables to each AC connecting plate.
☐ Use copper or aluminum cables only.
☐ Maximum cable cross-section: 300 mm².
☐ All line conductor cables must be of the same length and must not exceed the maximum cable length. The
maximum cable length is 15 m.
☐ The AC cables must be bundled in the three-phase system.
☐ Between the MV transformer and the inverter, three separate cable routes for the AC cables must be available,
e.g. cable channels.
☐ A line conductor L1, L2 or L3 must be laid in each cable channel. Ensure that the distance between the cable
bundles is at least twice the diameter of a cable. This will prevent current imbalances. Furthermore, it is
recommended to execute cabling between inverter and MV transformer directly on a grounding strap. This
measure further reduces electromagnetic influences.
Figure 52: Arrangement of AC cables with three cables per line conductor (example)
Position
Designation
L1
Line conductor L1
L2
Line conductor L2
L3
Line conductor L3
A
Grounding strap
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15.1.5 Dimensions of the Inverter
Dimensions of the inverter with roof
956 mm
2562 mm
700 mm
910 mm
652 mm
152 mm
2272 mm
Stop Start
1307 mm
1204 mm
Figure 53: Dimensions of the inverter with roof
910 mm
150 mm
Dimensions of the inverter without roof
2511 mm
700 mm
652 mm
152 mm
2054 mm
Stop Start
1307 mm
1204 mm
Figure 54: Dimensions of the inverter without roof
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15.1.6 Minimum Clearances
15.1.6.1 Minimum Clearances for Outdoor Installation
Damage due to intake of exhaust air or blocked ventilation openings
The supply air is intended to cool the inverter components. Failure to observe the specified minimum clearances can
result in warm exhaust air from the inverter being drawn in. This increases the risk of a thermal short circuit. Property
damage due to yield loss and damage to the components may result.
• Ensure that no exhaust air can be drawn in through the air inlets.
• Ensure that it is not possible for exhaust air to be drawn into the air intake of other devices.
• Make sure that the air inlets are not obstructed.
• Make sure that the exhaust air vents are not obstructed.
• Make sure that the ventilation openings are accessible for cleaning at all times.
• Ensure that the minimum clearances are complied with.
Installation in closed electrical operating area
The inverter must be installed in a closed electrical operating area.
• Ensure that unauthorized persons have no access to the inverter.
Observe minimum clearances
Observe the minimum clearances to ensure trouble-free operation of the inverter.
Maintain a certain distance between inverters installed back to back. This will facilitate maintenance and cleaning.
Recommended clearance: 800 mm
Minimum clearances for one inverter
Figure 55: Minimum clearances for one inverter
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Minimum clearances between two inverters and transformer
Version 1: Rear to rear
Figure 56: Minimum clearances between two inverters and transformer
Position
Designation
A
Inverter 1
B
Inverter 2
C
MV transformer and medium-voltage switchgear
D
Cable route between inverter and MV transformer
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Minimum clearances between two inverters and transformer
Version 2: Front to front
Figure 57: Minimum clearances between two inverters and transformer
Position
Designation
A
Inverter 1
B
Inverter 2
C
MV transformer and medium-voltage switchgear
D
Cable route between inverter and MV transformer
Recommended clearances for the facilitation of service work
In order to facilitate service work, minimum clearances to the rear and sides of 1000 mm are recommended. If you are
using a service tent during installation and service work, maintain 5000 mm clearance to the inverter.
15.1.6.2 Minimum Clearances in Electrical Equipment Rooms
Damage due to intake of exhaust air or blocked ventilation openings
The supply air is intended to cool the inverter components. Failure to observe the specified minimum clearances can
result in warm exhaust air from the inverter being drawn in. This increases the risk of a thermal short circuit. Property
damage due to yield loss and damage to the components may result.
• Ensure that no exhaust air can be drawn in through the air inlets.
• Ensure that it is not possible for exhaust air to be drawn into the air intake of other devices.
• Make sure that the air inlets are not obstructed.
• Make sure that the exhaust air vents are not obstructed.
• Make sure that the ventilation openings are accessible for cleaning at all times.
• Ensure that the minimum clearances are complied with.
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Minimum clearances for one inverter to be installed in electrical equipment rooms
The minimum passage width between the open door of the inverter and the next fixed obstacle must be maintained.
The minimum passage width must comply with national standards.
Figure 58: Minimum clearances for one inverter in an electrical equipment room
Position
Designation
A
Minimum passage width
B
Inverter
Minimum clearances for two inverters to be installed in electrical equipment rooms
Danger to life due to blocked escape routes
In hazardous situations, blocked escape routes can lead to death or serious injury. Opening the doors of two
products located opposite each other can block the escape route. It is imperative that the escape route is freely
accessible at all times.
• An escape route must be available at all times. Make sure the minimum passage width of the escape route
meets local standards.
• Do not place any objects in the escape route area.
• Remove all tripping hazards from escape routes.
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The minimum passage width between the open door of the inverter and the next fixed obstacle must be maintained.
The minimum passage width must comply with national standards.
Figure 59: Minimum clearances for two inverters in an electrical equipment room
Position
Designation
A
Minimum passage width
B
Inverter
15.1.7 Grounding Concept
In accordance with the latest technology, the inverters are discharged to ground. As a result, leakage currents to
ground occur which must be taken into account when planning the storage system. The magnitude and distribution of
these leakage currents is influenced by the grounding concept of all components of the storage system. It is
recommended that optical fiber technology is used for the transmission of signals, for example, when using cameras
and monitoring equipment. This will counteract possible interference sources.
The recommended grounding of inverter and MV transformer in meshed design reduces leakage current levels.
15.2
Storage
If you need to store the inverter prior to final installation, note the following points:
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Property damage due to dust intrusion and moisture penetration
Dust or moisture intrusion can damage the product and impair its functionality.
• Do not open the enclosure during rainfall or when humidity exceeds the specified thresholds. The humidity
thresholds are: 15% to 95%.
• Only perform maintenance work when the environment is dry and free of dust.
• Operation of the product is only permitted when it is closed.
• Connect the external supply voltage after mounting and installing the product.
• If the installation or commissioning process is interrupted, mount all panels.
• Close and lock the enclosure.
• The product must always be closed for storage.
• Store the product in a dry and covered location.
• Temperature at the storage location must be in the specified range. The temperature range is: −25°C to +70°C
.
Damage to the frame construction of the inverter due to uneven support surface
Placing the inverter on uneven surfaces can cause buckling so that the inverter doors will no longer close properly.
This may lead to moisture and dust penetration into the inverter.
• Never place the inverter on an unstable, uneven surface even for a short period of time.
• The unevenness of the support surface must be less than 0.25%.
• The support surface must be suitable to take the weight of the inverter. Weight: 1900 kg.
• Do not transport the inverter with mounted kick plates.
Desiccant bag in the inverter cabinet
The desiccant bag in the inverter cabinet protects the electronic components from moisture. The desiccant bag
must be replaced by a new desiccant bag included in the scope of delivery one day before commissioning.
15.3
Torques
Torques of the power connections:
Type of terminal lug
Torque
Tin-plated aluminum terminal lug on copper bar
37 Nm
Tin-plated copper terminal lug on copper bar
60 Nm
Tin-plated aluminum or copper terminal lug on aluminum bar
37 Nm
Torques at panels, covers and grounding conductor:
Position
Torque
Grounding conductors on the kick plates
8 Nm to 10 Nm
Mounting the kick plates
2 Nm to 3 Nm
Grounding conductor on the roof
14.2 Nm
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Position
Torque
Mounting the ventilation grids on the roof
20 Nm
Protective covers
5 Nm
15.4
Type Label
The type label clearly identifies the product. One type label is present in the inverter. The type label is located in the
right-hand top corner inside the interface cabinet. You will require the information on the type label to use the product
safely and when seeking customer support. The type labels must be permanently attached to the product.
Reading off the serial number
You can identify the serial number without opening the inverter. The serial number can be found on the roof of the
inverter at the top left. You can also read off the serial number from the touch display.
15.5
Scope of Delivery
Check the scope of delivery for completeness and any externally visible damage. Contact your distributor if the scope
of delivery is incomplete or damaged.
Figure 60: Components included in the scope of delivery of the inverter
Position
Quantity
Designation
A
1
Inverter
B
1
Ventilation plate
C
5
Kick plate
D
1
Non-woven abrasive
E
1
Desiccant bag
F
68
Bolt
G
68
Nut
H
136
Fender washer
I
136
Spring washer
K
80
Cable tie
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Position
Quantity
Designation
L
3
Cable support sleeve (9.5 mm to 16 mm)
M
1
Circuit diagram, documentation, report
15.6
Schematic Diagram
Schematic diagrams in PDF format contain jump marks. By double clicking a jump mark, the display will change to the
corresponding current path or the referenced place in the equipment list. Using schematic diagrams in PDF format is
recommended for the installation. The schematic diagrams in PDF format are available on request (see Section 16
"Contact", page 160).
15.7
User Groups
User group
User
Right
• Displaying operating data
• Displaying errors and events
Installer
• All rights of the user group "User"
• Configuring system settings
• Configuring parameter settings
• Configuring network settings
• Resetting operating data and settings
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16 Contact
SMA Solar Technology AG
16 Contact
If you have technical problems with our products, please contact the SMA Service Line. We require the following
information in order to provide you with the necessary assistance:
• Device type
• Serial number
• Type and number of PV modules connected
• Type of communication
• Firmware version
• Error number and error message
Danmark
SMA Solar Technology AG
Belgien
SMA Benelux BVBA/SPRL
Deutschland
Niestetal
Belgique
Mechelen
Österreich
SMA Online Service Center:
www.SMA.de/Service
België
+32 15 286 730
Schweiz
Luxemburg
Sunny Boy, Sunny Mini Central,
Luxembourg
Sunny Tripower: +49 561 9522‑1499
Nederland
Monitoring Systems (KommunikationČesko
sprodukte): +49 561 9522‑2499
Fuel Save Controller (PV-Diesel-Hybridsysteme): +49 561 9522-3199
Magyarország
Praha
Polska
+420 235 010 417
Sunny Island, Sunny Backup, Hydro
Boy: +49 561 9522-399
România
Sunny Central: +49 561 9522-299
France
SMA Central & Eastern Europe s.r.o.
Slovensko
SMA France S.A.S.
Ελλάδα
SMA Hellas AE
Lyon
Κύπρος
Αθήνα
+33 472 22 97 00
+30 210 9856666
España
SMA Ibérica Tecnología Solar, S.L.U.
Portugal
Barcelona
Milton Keynes
+34 935 63 50 99
+44 1908 304899
Italia
SMA Italia S.r.l.
United Arab
Emirates
United Kingdom
France
SMA Solar UK Ltd.
SMA France S.A.S.
Milano
Lyon
+39 02 8934-7299
+33 472 22 97 00
SMA Middle East LLC
India
SMA Solar India Pvt. Ltd.
Abu Dhabi
Mumbai
+971 2 234-6177
+91 22 61713888
SMA Solar (Thailand) Co., Ltd.
대한민국
SMA Technology Korea Co., Ltd.
서울
+66 2 670 6999
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+82-2-520-2666
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16 Contact
SMA Solar Technology AG
South Africa
SMA Solar Technology South Africa
Pty Ltd.
Argentina
SMA South America SPA
Brasil
Santiago
Cape Town
Chile
+562 2820 2101
08600SUNNY (78669)
Perú
International: +27 (0)21 826 0600
Australia
SMA Australia Pty Ltd.
Other countries
International SMA Service Line
Sydney
Niestetal
Toll free for Australia: 1800 SMA AUS
(1800 762 287)
Toll free worldwide:
00800 SMA SERVICE
(+800 762 7378423)
International: +61 2 9491 4200
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