SMA SUNNY BOY 3800 Installation manual

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SMA SUNNY BOY 3800 Installation manual | Manualzz
PV Inverter
SUNNY BOY 3300/3800
Installation Guide
SB33_38-IEN111851 | IME-SB3800 | Version 5.1
EN
SMA Solar Technology AG
Table of Contents
Table of Contents
1
1.1
1.2
1.3
1.4
Notes on this Guide . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Validity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Target Group . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Additional Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Symbols Used . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2
2.1
2.2
2.3
Safety . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Appropriate Usage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Safety Instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Explanation of Symbols . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
2.3.1
Symbols on the Inverter. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
2.3.2
Symbols on the Type Plate . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
3
3.1
3.2
Unpacking. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Scope of Delivery . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Identifying the Inverter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
4
4.1
4.2
4.3
Assembly. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Safety . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Selecting the Mounting Location. . . . . . . . . . . . . . . . . . . . . . . . 15
Mounting the Inverter with the Wall Mounting Bracket . . . . . . 17
5
5.1
5.2
Electrical Connection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
Safety . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
Overview of the Connection Area . . . . . . . . . . . . . . . . . . . . . . 20
5.2.1
Exterior View . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
5.2.2
Interior View . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
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6
6
6
7
3
Table of Contents
SMA Solar Technology AG
5.3
Connection to the Power Distribution Grid (AC). . . . . . . . . . . . 22
5.3.1
Conditions for the AC Connection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
5.3.2
Connecting the Inverter to the Power Distribution Grid (AC) . . . . . . . . . . . . 24
5.3.3
Connecting Additional Grounding . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
5.4
5.5
Setting the Display Language . . . . . . . . . . . . . . . . . . . . . . . . . . 28
Connection of the PV Generator (DC) . . . . . . . . . . . . . . . . . . . 29
5.5.1
Conditions for the DC Connection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
5.5.2
5.5.3
Assembling the DC Plug Connector . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
Opening the DC Plug Connector . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
5.5.4
Connecting the PV Generator (DC) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
5.6
5.7
Communication. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
Setting the Grid and Country Parameters . . . . . . . . . . . . . . . . . 36
5.7.1
Setting the Installation Country . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36
5.7.2
Setting Off-Grid Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36
6
6.1
6.2
Commissioning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
Commissioning the Inverter . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
Self-Test in accordance with DK 5940, Ed. 2.2
(applies to Italy only) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38
6.2.1
6.2.2
Starting the Self-Test by Tapping . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38
Completion of the Self-Test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38
7
7.1
7.2
7.3
Opening and Closing. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43
Safety . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43
Opening the Inverter. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43
Closing the Inverter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45
8
8.1
Maintenance and Cleaning . . . . . . . . . . . . . . . . . . . . . . . . 47
Checking Heat Dissipation . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47
8.1.1
Cleaning the Fan. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47
8.1.2
Checking the Fan . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48
8.1.3
Cleaning the Ventilation Grids . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50
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Table of Contents
8.2
Checking the Electronic Solar Switch for Wear . . . . . . . . . . . . 51
9
9.1
9.2
Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 52
Blink Codes. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 52
Error Messages. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53
9.3
Red LED is Glowing Continuously. . . . . . . . . . . . . . . . . . . . . . . 58
9.3.1
Checking the PV Generator for a Ground Fault . . . . . . . . . . . . . . . . . . . . . . 58
9.3.2
Checking the Function of the Varistors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 60
10
10.1
10.2
10.3
10.4
Decommissioning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 63
Dismantling the Inverter. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 63
Packing the Inverter. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 65
Storing the Inverter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 65
Disposing of the Inverter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 65
11
11.1
11.2
Technical data. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 66
Sunny Boy 3300 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 66
Sunny Boy 3800 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 69
12
Accessories . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 72
13
Contact . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 73
Installation Guide
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5
Notes on this Guide
SMA Solar Technology AG
1 Notes on this Guide
1.1 Validity
This guide describes the assembly, installation, commissioning and maintenance of the following SMA
inverters:
• Sunny Boy 3300 (SB 3300) from firmware version GRX33_3.02/3.02,
• Sunny Boy 3800 (SB 3800) from firmware version GRX38_3.05/3.05.
The firmware version will be indicated in the display once you have commissioned the inverter.
Keep this guide in a convenient place for future reference.
1.2 Target Group
This guide is for electrically qualified persons. The tasks described in this guide may be performed by
electrically qualified persons only.
1.3 Additional Information
You will find further information on special topics such as designing a line circuit breaker or the
description of the operating parameters in the download area at www.SMA.de/en.
Refer to the user manual provided for detailed information on operating the inverter.
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Notes on this Guide
1.4 Symbols Used
The following types of safety instructions and general information appear in this document as
described below:
DANGER!
"DANGER" indicates a hazardous situation which, if not avoided, will result in death or
serious injury.
WARNING!
"WARNING" indicates a hazardous situation which, if not avoided, could result in death
or serious injury.
CAUTION!
"CAUTION" indicates a hazardous situation which, if not avoided, could result in minor or
moderate injury!
NOTICE!
"NOTICE" indicates a situation that can result in property damage, if not avoided.
Information
Information provides tips that are valuable for the optimal installation and operation of
your product.
☑
This symbol indicates the result of an action.
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Safety
SMA Solar Technology AG
2 Safety
2.1 Appropriate Usage
The Sunny Boy is a PV inverter, which converts the DC current of the PV generator to AC current and
feeds it into the public grid.
Principle of a PV plant with this Sunny Boy
The Sunny Boy may only be operated with PV generators (modules and cabling) of protection class
II. Do not connect any sources of energy other than PV modules to the Sunny Boy.
When designing the PV plant, ensure that the values comply with the permitted operating range of all
components at all times. The free design program "Sunny Design" (www.SMA.de/en/SunnyDesign)
will assist you. The manufacturer of the PV modules must have approved the modules for use with this
Sunny Boy device. You must also ensure that all measures recommended by the module manufacturer
for long-term maintenance of the module properties are taken (see also Technical Information
"Module Technology" in the download area of www.SMA.de/en).
Do not use the Sunny Boy for purposes other than those described here. Alternative uses,
modifications to the Sunny Boy or the installation of components not expressly recommended or sold
by SMA Solar Technology AG void the warranty claims and operation permission.
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SMA Solar Technology AG
Safety
Certified Countries
Providing correct settings, Sunny Boy 3300/3800 complies with the following standards and
guidelines (status: 11/2010):
• VDE 0126-1-1 (02.2006)
• RD 1663/2000 (2000)
• G83/1 (09.2003)
• CER/06/190 (10.2006)
• E 2750 (11.2004)
• PPC (2006/06)
• EN 50438 (12.2007)
• C10/C11 (08.2003)
• PPDS (2009)
• DK 5940 Ed.2.2 (02.2006) (valid for SB 3300-IT/3800-IT only)
• AS4777 (2005)
• IEC-utility Meeting 216
• UTE C15-712-1
SMA Solar Technology AG can preset special grid parameters for other countries/installation
locations according to customer requests, after evaluation by SMA Solar Technology AG. You can
later make modifications yourself by changing software parameters with respective communication
products (e.g. Sunny Data Control or Sunny Explorer) (see section 5.7 ”Setting the Grid and Country
Parameters” (page 36)). To change grid-relevant parameters, you need a personal access code - the
so-called SMA Grid Guard Code. The application form for the personal access code is located in the
download area at www.SMA.de/en, in the "Certificate" category for each inverter.
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Safety
SMA Solar Technology AG
2.2 Safety Instructions
DANGER!
Danger to life due to high voltages in the inverter.
• All work on the inverter may only be carried out by an electrically qualified person.
CAUTION!
Danger of burn injuries due to hot enclosure parts!
• Do not touch the inverter's enclosure during operation.
NOTICE!
Dust and water in the inverter can damage the device.
Once the Electronic Solar Switch has been pulled out, the inverter only provides protection
rating IP21. The inverter is then no longer protected against water and dust. In order to also
maintain protection rating IP65 during temporary decommissioning, proceed as follows:
• Release and disconnect all DC connectors.
• Open all DC connectors and remove the cables.
• Close all DC inputs with the corresponding DC connectors and the supplied sealing
plugs.
• Securely attach the Electronic Solar Switch again.
Grounding the PV generator
Comply with the local requirements for grounding the modules and the PV generator.
SMA Solar Technology AG recommends connecting the generator frame and other
electricity conducting surfaces in a manner which ensures continuous conductions, and
grounding them in order to achieve maximum protection of the system and personnel.
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SMA Solar Technology AG
Safety
2.3 Explanation of Symbols
This section gives an explanation of all the symbols found on the inverter and on the type plate.
2.3.1 Symbols on the Inverter
Symbol
Explanation
Operation Display.
Indicates the operating state of the inverter.
Ground fault or varistor defective.
Read section 9.3 ”Red LED is Glowing Continuously” (page 58).
Error or disturbance.
Read section 9 ”Troubleshooting” (page 52).
Tap to switch on the display light and switch to the next display message.
Electronic Solar Switch (ESS) DC load disconnection unit
Installation Guide
•
When the Electronic Solar Switch is plugged in, the DC circuit is
closed.
•
In order to interrupt the DC circuit and disconnect the inverter
securely under load, first pull out the Electronic Solar Switch
and
then remove all DC plug connectors , as described in section
7.2 ”Opening the Inverter” (page 43).
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Safety
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2.3.2 Symbols on the Type Plate
Symbol
Explanation
Beware of dangerous electrical voltage.
The inverter operates at high voltages. All work on the inverter may only be
carried out by an electrically qualified person.
Beware of hot surface.
The inverter can become hot during operation. Avoid contact during
operation.
Observe all documentation that accompanies the inverter.
The inverter must not be disposed of together with household waste. For
more information on disposal, see section 10.4 ”Disposing of the Inverter”
(page 65).
CE mark.
The inverter complies with the requirements of the applicable EC
guidelines.
The inverter has a transformer.
Direct Current (DC)
Alternating current (AC)
Protection rating IP65.
The inverter is protected against penetration by dust particles and water
jets from any angle.
RAL quality mark for solar products.
The inverter complies with the requirements of the German Institute for
Quality Assurance and Labeling.
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Unpacking
3 Unpacking
3.1 Scope of Delivery
Check the delivery for completeness and for visible external damage, such as cracks in the enclosure
or in the display. Contact your dealer if anything is damaged or missing.
Object
A
B
C
D
E
F
G
H
Number
1
1
2
1
5
2
1
1
I
K
L
M
N
O
6
6
1
1
1
1
Installation Guide
Description
Sunny Boy
Wall mounting bracket (back panel)
Ventilation grid (1 x right, 1 x left)
Electronic Solar Switch (ESS)
Filler-plug for wall mounting (sealing)
Cylinder bolts and M6 safety washers
Jumper for communication/fan test
AC coupling socket: socket unit, protective cap for socket unit, threaded
sleeve, sealing ring, clamping nut.
Sealing plugs for DC plug connectors
DC plug connectors (3 x positive / 3 x negative)
Installation Guide
User Manual
Document set
Supplementary sheet with inverter factory settings
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Unpacking
SMA Solar Technology AG
3.2 Identifying the Inverter
You can identify the inverter using the type plate. The type plate is on the right side of the enclosure.
The serial number (Serial No.) and the type (Type / Model) of the inverter, as well as device-specific
characteristics, are specified on the type plate.
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SMA Solar Technology AG
Assembly
4 Assembly
4.1 Safety
DANGER!
Danger to life due to fire or explosion.
Despite careful construction, electrical devices can cause fires.
• Do not mount the inverter on flammable construction materials.
• Do not mount the inverter in areas where highly flammable materials are stored.
• Do not mount the inverter in areas with a risk of explosion.
CAUTION!
Danger of burn injuries due to hot enclosure parts!
• Mount the inverter in such a way that it cannot be touched inadvertently during
operation.
CAUTION!
Risk of injury due to the heavy weight of the inverter!
• Take the inverter's weight of approx. 38 kg into account for mounting.
4.2 Selecting the Mounting Location
Consider the following requirements when selecting where to install:
• The mounting method and location must be suitable for the inverter's weight and dimensions
(see section 11 ”Technical data” (page 66)).
• Mount on a solid surface.
• The mounting location must at all times be clear and have safe access without the use of
additional aids such as scaffolding or lifting platforms. Any possible service actions are
otherwise limited.
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Assembly
SMA Solar Technology AG
• Install vertically or tilted backwards at a maximum angle of 45°.
• The connection area must point downwards.
• Never mount the device with a forward tilt.
• Never install the device with a sideways tilt.
• Do not mount horizontally.
• Install at eye level in order to allow operation conditions to be read at all times.
• The inverter must be easy to remove from the mounting location at any time.
• The ambient temperature should be below 40 °C to ensure optimal operation.
• Do not expose the inverter to direct sunlight to avoid power reduction due to excessive heating.
• In living areas, do not mount the unit on plasterboard walls or similar to avoid audible
vibrations. The inverter can make noises when in use which may be perceived as a nuisance in
a living area.
• Observe the minimum clearances to walls, other
inverters or objects as shown in the diagram in
order to ensure sufficient heat dissipation and
sufficient space for removing the Electronic Solar
Switch.
Multiple inverters installed in areas with high ambient temperatures
If necessary, increase the clearances between the individual inverters. In addition, make
sure there is enough ventilation to ensure sufficient cooling of the inverters
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SMA Solar Technology AG
Assembly
4.3 Mounting the Inverter with the Wall Mounting Bracket
CAUTION!
Risk of injury due to the heavy weight of the inverter.
• Note that the inverter weighs approx. 38 kg.
1. Use the wall mounting bracket as a drilling template and mark the positions of the drill holes.
Mounting material
When mounting the bracket, use fastening material suitable for the mounting surface.
2. Fill in holes that are not required in the wall mounting bracket using the filler-plugs. Insert the
filler-plugs into the wall mounting bracket from the outside (the side that will later be placed
against the wall).
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Assembly
SMA Solar Technology AG
3. Attach the wall mounting bracket to the wall using
appropriate screws and washers.
4. Mount the inverter with the upper fastening plates
on the wall mounting bracket in such a way that
both plates on the upper edge of the bracket pass
through the cutouts on the inverter.
5. Visual inspection: The inverter is only correctly
mounted when both rear panel mounting plates
slightly protrude through the cutouts.
6. If a second protective conductor is required in the country of installation, ground the inverter and
protect against excavation, as described in section 5.3.3 ”Connecting Additional Grounding”
(page 27).
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Assembly
7. If a second protective conductor is not required,
secure the inverter against excavation:
– Insert cylinder bolt with safety washer through
the metal lashing eye on the bottom of the
enclosure. The toothing of the safety washer
must face toward the metal shackle.
– Tighten cylinder bolt to a tightening torque of
6 Nm.
8. Check to ensure that the inverter is firmly fastened. The wall mounting bracket is designed so
that the inverter tilts backward slightly on a perfectly vertical wall.
9. Attach the ventilation grids provided to the inverter.
To help you identify the sides, "links/left" or "rechts/
right" is printed on the inside of the ventilation grids.
☑ The inverter is now mounted.
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Electrical Connection
SMA Solar Technology AG
5 Electrical Connection
5.1 Safety
NOTICE!
Damage to the inverter through electrostatic discharges.
Internal components of the inverter can be irreparably damaged by static discharge.
• Before you touch a component inside the inverter, ground yourself by touching a
grounded object.
5.2 Overview of the Connection Area
5.2.1 Exterior View
The following figure shows the assignment of the individual connection areas on the bottom of the
inverter.
Object
A
B
C
D
20
Description
Enclosure openings for communication (with filler-plugs)
DC connectors for connecting the PV strings
Socket for connecting the Electronic Solar Switch (ESS) DC load disconnection unit
AC socket for grid connection
SB33_38-IEN111851
Installation Guide
SMA Solar Technology AG
Electrical Connection
5.2.2 Interior View
The following figure shows the various components and connection areas of the open inverter.
Object
A
B
C
D
E
F
G
H
I
K
L
M
Description
Slot for communication
Display
Jumper slot for fan test
Operating status LEDs
Tab for grounding the cable shield with line-conducted communication
AC socket for grid connection
DC connectors for connecting the PV strings
Electronic Solar Switch (ESS) socket
Enclosure opening with filler-plugs for communication
Varistors
Communication Connection
Jumper slot for communication
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Electrical Connection
SMA Solar Technology AG
5.3 Connection to the Power Distribution Grid (AC)
5.3.1 Conditions for the AC Connection
Connection requirements of the electric power company
Always observe the connection requirements of your electric power company.
Cable sizing
For optimum operation of the inverter, the grid impedance of the AC cable must not exceed 1 ohm.
This is necessary, amongst other things, for the correct operation of the inverter.
The conductor cross-section should be dimensioned in a way that cable losses do not exceed 1 % at
nominal power. Use "Sunny Design" (www.SMA.de/en/SunnyDesign) for this.
The maximum cable lengths are shown in the following table. Do not exceed the maximum cable
length.
Conductor cross-section
4 mm²
Maximum cable length
SB 3300
SB 3800
18.5 m
16 m
The conductor cross-sectional area required in individual cases depends on the following factors:
• Ambient temperature,
• Routing method,
• Cable losses,
• valid installation guidelines of the respective country (of the installation location).
Cable Requirements
Position
A
B
C
22
Description
External diameter
Conductor cross-section
Strip insulation
SB33_38-IEN111851
Value
6 mm ... 14 mm
4 mm²
8 mm
Installation Guide
SMA Solar Technology AG
Electrical Connection
Load disconnection unit
You must install a separate line circuit breaker for each inverter in order to ensure that the inverter
can be securely disconnected under load. The maximum permissible rating can be found in
section 11 ”Technical data” (page 66).
Detailed information and examples for the rating of a line circuit breaker can be found in the Technical
Information "Line Circuit Breaker" in the SMA Solar Technology AG download area at
www.SMA.de/en.
DANGER!
Danger to life due to fire.
When more than one inverter is connected to the same line circuit breaker, the protective
function of the line circuit breaker is no longer guaranteed. It can result in a cable fire or
destruction of the inverter.
• Never connect several inverters to a single line circuit breaker.
• Observe the maximum permissible fuse protection of the inverter when selecting the
line circuit breaker.
DANGER!
Danger to life due to fire.
When a generator (inverter) and a consumer are connected to the same line circuit
breaker, the protective function of the line circuit breaker is no longer guaranteed. The
current from the inverter and the grid can accumulate to overcurrent which is not detected
by the line circuit breaker.
• Never connect consumers between the
inverter and the line circuit breaker
without protection.
• Always protect consumers separately.
NOTICE!
Damage to the inverter by using screw type fuse elements as a load
disconnection unit.
A screw type fuse element, e.g. D system (Diazed) or D0 system (Neozed) is not a load
disconnection unit, and thus must not be used as a load disconnection unit. A bolt securing
element serves as line fuse only.
When disconnecting under load using a screw type fuse element, the inverter can be
damaged.
• Use only a load disconnection switch or a line circuit breaker as a load disconnection
unit.
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5.3.2 Connecting the Inverter to the Power Distribution Grid (AC)
Overview of the AC Connection Socket
Object
A
B
C
D
E
Description
Protective cap for socket element
Socket element
Threaded sleeve with sealing ring for cable diameters of 10 mm ... 14 mm
Sealing ring for cable diameters of 6 mm ... 10 mm
Clamping nut
Procedure
1. Check the grid voltage and compare with "VAC nom" on the type plate.
The exact operating range of the inverter is specified in the operation parameters. The
corresponding document is located in the download area at www.SMA.de/en, in the
"Technical Description" category of the respective inverter.
2. Disconnect the line circuit breaker and prevent it from being reactivated.
3. If necessary, exchange the sealing ring of the threaded sleeve with the sealing ring provided.
– Pull the sealing ring out of the threaded sleeve.
– Insert the smaller sealing ring.
4. Pass the clamping nut (E) over the AC cable.
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5. Pass the threaded sleeve (C) with the sealing ring over the AC cable.
6. Bend the AC cable. The bend radius must be at
least four times the cable diameter.
7. Shorten the cable.
8. Shorten phase L and neutral conductor N 4 to
5 mm.
9. Insert the PE protective conductor (green-yellow)
into the screw terminal with the earth sign on the
socket element and tighten the screw. The PE
protective conductor must be longer than the
connection wires of N and L.
10. Insert the neutral conductor N (blue) in the screw
terminal N on the socket element and tighten the
screw.
11. Insert phase L (brown or black) into the screw
terminal L on the socket element and tighten the
screw.
12. Make sure the wires are securely connected.
13. Push the threaded sleeve (C) onto the socket element (B) until it audibly snaps into place.
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14. Screw the clamping nut (E) tightly onto the threaded sleeve (C). The clamping nut serves to seal
and relieve strain.
☑ The AC connection socket has been screwed together.
15. Close the socket element with the protective cap provided, if the inverter has not yet been
connected.
16. Insert the AC connection socket into the AC socket
on the inverter. Remove the protective cap
beforehand, if required.
☑ The AC cable is now connected to the inverter.
A
DANGER!
Danger to life due to high voltages in the inverter.
• Do not switch on the line circuit breaker until the inverter is securely closed and the
PV generator has been connected.
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5.3.3 Connecting Additional Grounding
If a second protective conductor, additional grounding or equipotential bonding is required, you can
additionally ground the inverter on the enclosure.
Additional Grounding Overview
Object
A
B
C
D
E
Description
Metal shackle on the underside of the inverter enclosure
Safety washer (within scope of delivery)
Terminal lug (M6) with grounding conductor
Washer
M6x12 cylinder bolt (within scope of delivery)
Procedure
1. Disconnect the inverter on the AC and DC sides as described in section 7.2 ”Opening the
Inverter” (page 43).
2. Align washer, terminal lug and safety washer on
cylinder bolt. The toothing of the safety washer must
face toward the metal shackle.
3. Insert the cylinder head screw into the metal
shackle and tighten it using a torque of 6 Nm.
4. Check that the contact between the grounding conductor and the enclosure is in accordance
with the regulations valid for the country of installation.
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5.4 Setting the Display Language
You can set the language of the display using the switches underneath the display assembly inside
the inverter.
Procedure
1. Open the inverter as described in section 7.2 ”Opening the Inverter” (page 43).
2. Set the switches to the required language, as
shown below.
Language
German
English
French
Spanish
Switch S2
B
B
A
A
Switch S1
B
A
B
A
For type SB 3300-IT/3800-IT inverters the following switch settings apply:
Language
Italian
English
Switch S2
B
A
Switch S1
A
A
3. Close the inverter as described in section 7.3 ”Closing the Inverter” (page 45).
☑ The display language is set.
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5.5 Connection of the PV Generator (DC)
5.5.1 Conditions for the DC Connection
Use of Adaptors
Adaptors (branch connectors) must not be visible or freely accessible in the immediate
surroundings of the inverter.
• The DC circuit may not be interrupted by adaptors.
• Observe the procedure for disconnecting the inverter as described in section
7.2 ”Opening the Inverter” (page 43).
• Requirements for the PV modules of the connected strings:
– Same type
– Same number
– Identical alignment
– Identical tilt
• The connecting cables of the PV modules must be equipped with plug connectors. You will find
the necessary DC plug connector for DC connection in the delivery.
• The following limit values at the DC input of the inverter must not be exceeded:
maximum input voltage
500 V (DC)
maximum input current
20 A (DC)
DANGER!
Risk of lethal electric shock or fire.
The maximum possible input current per string is limited by the plug connectors used. If the
plug connector is overloaded, it can result in an electric arc and hence a risk of fire.
• Ensure that the input current for each string does not exceed the maximum flow
current of the plug connectors used.
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5.5.2 Assembling the DC Plug Connector
In order to connect to the inverter, all connection cables of the PV modules must be equipped with the
DC plug connectors provided.
To assemble the DC plug connectors, proceed as follows: Ensure the plug connectors have the correct
polarity. The DC plug connectors are identified with "+" and " − ".
Cable Requirements
• Use a PV1-F cable.
Procedure
1. Insert stripped cable into the plug up to the limit.
2. Press the clamping bracket down until it audibly
snaps into place.
3. Ensure the cable is correctly in place.
Result
Measure
☑ If the conductors are visible in the hollow
• Proceed to step 4.
cavity of the clamping bracket, the cable is
in the correct position.
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Result
Measure
☑ If the conductors are not visible in the
• Loosen the clamping bracket. For this
hollow cavity, the cable is not in the correct
purpose, use a screwdriver with a width of
position.
3.5 mm.
• Remove cable and start again from step 1.
4. Push the bolted connection toward the thread and fasten to a tightening torque of 2 Nm.
☑ The DC connectors are now assembled and can be connected to the inverters, as described in
section 5.5.4 ”Connecting the PV Generator (DC)” (page 33).
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5.5.3 Opening the DC Plug Connector
1. Screw the threaded joint off.
2. To release the plug connector, slot a screw driver
into the side catch mechanism and lever out.
For this purpose, use a screwdriver with a width
of 3.5 mm.
3. Carefully pull the DC connector apart.
4. Loosen the clamping bracket. For this purpose, use
a screwdriver with a width of 3.5 mm.
5. Remove the cable.
☑ The cable is now removed from the DC plug connector.
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5.5.4 Connecting the PV Generator (DC)
DANGER!
Danger to life due to high voltage at the inverter!
• Before connecting the PV generator, ensure that the line circuit breaker is switched
off and that it cannot be reactivated.
NOTICE!
Excessive voltages can destroy the measuring device!
• Only use measuring devices with a DC input voltage range up to at least 1 000 V.
1. Disconnect the line circuit breaker and prevent it from being reactivated.
2. Pull the Electronic Solar Switch downward, slightly
towards the wall.
3. Check the connection cables of the PV modules for
correct polarity and make sure that the maximum
input voltage of the inverter is not exceeded.
With an ambient temperature over 10 °C, the
open circuit voltage of the PV modules should not
exceed 90 % of the maximum input voltage of the
inverter. Otherwise, check the plant design and the
PV module connection. If this is not done, the
maximum inverter input voltage can be exceeded
at low ambient temperatures.
NOTICE!
Exceeding the maximum input voltage can destroy the inverter!
If the voltage of the PV modules exceeds the maximum input voltage of the inverter, it can
be destroyed by the overvoltage. All warranty claims become void.
• Do not connect strings with an open circuit voltage greater than the maximum input
voltage of the inverter.
• Check the plant design.
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4. Check the strings for ground faults, as described in section 9.3.1 ”Checking the PV Generator
for a Ground Fault” (page 58).
NOTICE!
Excessive currents can damage the inverter!
• The maximum current per DC connector plug may not exceed 16 A.
DANGER!
Risk of lethal electric shock.
• Do not connect strings with ground faults.
• First, rectify the ground fault in the respective string.
5. Check the DC connector for correct polarity and connect it.
To release the DC plug connectors, see section 7.2 ”Opening the Inverter” (page 43).
6. To create the sealing on the inverter, all the DC
inputs have to be closed as follows:
– Insert the provided sealing plugs into the
unneeded DC plug connectors.
Do not insert the sealing plugs into the DC
inputs on the inverter.
– Insert the DC plug connectors with sealing plugs
into the corresponding DC inputs on the inverter.
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7. Check the Electronic Solar Switch for wear, as
described in section 8.2 ”Checking the Electronic
Solar Switch for Wear” (page 51) and attach it
firmly.
NOTICE!
The Electronic Solar Switch can be damaged if it is plugged on incorrectly!
The Electronic Solar Switch can be damaged by high voltages if it has not been attached
properly.
• Do not tighten the screw inside the handle.
• Insert the handle of the Electronic Solar Switch securely in the socket on the bottom
of the enclosure until it audibly locks into place.
• Check whether the handle of the Electronic Solar Switch is securely connected.
☑ The PV generator is now connected.
5.6 Communication
The inverter is equipped with a socket for communication interfaces in order to communicate with
special data acquisition devices (e.g., Sunny WebBox) or a PC with corresponding software (e.g.
Sunny Data Control or Sunny Explorer).
Refer to the respective communication interface manual for a detailed wiring diagram and an
installation description for the interface.
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5.7 Setting the Grid and Country Parameters
Changing Grid-Relevant and Country Parameters
To change grid-relevant parameters, you need a personal access code - the so-called
SMA Grid Guard Code. The application form for the personal access code is located in
the download area at www.SMA.de/en, in the "Certificate" category for each inverter.
Ensure that you discuss the changes to these parameters with your electric power company.
A detailed description of the operating parameters for the inverter is available in the download area
at www.SMA.de/en in the category "Technical Description" of the respective inverter.
5.7.1 Setting the Installation Country
Using the "Default" parameter you can set the installation country and/or the grid connection
standard valid for the country via a communication device (e.g. Sunny WebBox) or a PC with
corresponding software (e.g., Sunny Data Control or Sunny Explorer). This, however, is only required
if the inverter was originally ordered for another country. You can see the standard to which the
inverter was set upon delivery from the type plate and the supplementary document provided with the
factory settings.
5.7.2 Setting Off-Grid Operation
To operate the inverter in an off-grid system with Sunny Island, you must set the inverter via the
"Default" parameter to off-grid ("OFF-Grid") operation.
You have several possibilities to set the inverter to off-grid operation:
• Setting via Sunny WebBox
or
• Setting via Sunny Data Control or Sunny Explorer.
DANGER!
Danger to life due to high voltages in the event of outage of the power
distribution grid.
If you set the inverter to off-grid operation, it does not fulfill any country-specific standards
and regulations. Therefore, in the event of outage of the power distribution grid, there is a
danger of back feed.
• Never operate the inverter directly on the power distribution grid when set to off-grid
operation.
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Commissioning
6 Commissioning
6.1 Commissioning the Inverter
1. Check the following requirements before commissioning:
– The inverter is firmly fastened
– Correct connection of the AC cable (grid)
– Full connection of the DC cables (PV strings)
– Unnecessary DC inputs are closed with the corresponding DC connectors and sealing plugs.
– The enclosure lid is securely screwed in place
– The Electronic Solar Switch (ESS) is securely plugged
– The line circuit breaker is laid out correctly
2. Switch on the line circuit breaker.
☑ Green LED glows: commissioning has been successful.
or
☑ Green LED flashes in case of insufficient irradiation: grid connection conditions have not yet
been reached. Wait for sufficient irradiation.
or
☑ The red or yellow LED is glowing or blinking: an error has occurred. Proceed to step 3.
A
B
Green LED
Red LED
C
Yellow LED
Operation
Ground fault or varistor
defective
Error
Self test in accordance with DK 5940, Ed. 2.2 for initial commissioning (applies
to Italy only)
The Italian DK 5940 standard prescribes that an inverter can only operate on the power
distribution grid after the disconnection times for overvoltage, undervoltage, minimum
frequency and maximum frequency have been checked.
Start the self-test as described in the section 6.2 ”Self-Test in accordance with DK 5940,
Ed. 2.2 (applies to Italy only)” (page 38). The test takes approx. 8 minutes.
3. Read section 9 ”Troubleshooting” (page 52) and if necessary eliminate the error or
disturbance.
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6.2 Self-Test in accordance with DK 5940, Ed. 2.2
(applies to Italy only)
6.2.1 Starting the Self-Test by Tapping
You can start testing the disconnection times by tapping on the enclosure lid. A prerequisite here is
that the country configuration of the inverter has been set to Italy (IT/DK5940) or "trimmed". Proceed
as follows for checking the disconnection times:
1. Connect the PV generator with the inverter. The inverter can only initialize if the PV generator
produces enough power. It is therefore not possible to test the disconnection times at night.
2. Connect the inverter on the AC side. For this, you have to create the AC connection (AC plug
or direct connection) and/or switch on the line circuit breaker of the grid cable (fuse or
automatic circuit breaker).
3. The inverter is now in the initialization phase, i.e. all 3 LEDs are glowing at the same time.
Start the self-test immediately after all 3 LEDS have gone out by tapping on the display of the
inverter.
4. The question of whether you would like to start the
test sequence appears in the display. Tap on the
display again within 30 seconds to confirm the
question.
Once you have started the test sequence, the inverter checks the disconnection times for overvoltage,
undervoltage, maximum frequency and minimum frequency one after the other. During the tests, the
inverter shows the values in the display which are described in section 6.2.2 ”Completion of the SelfTest” (page 38).
6.2.2 Completion of the Self-Test
Note the values which are displayed during the self-test. These values must be entered into a test
protocol. The test results of the individual tests are displayed 3 times, one after the other. The
respective display message is displayed for 10 seconds.
The self-test changes the upper and lower disconnection thresholds for each protective function on a
linear basis with a modification of 0.05 Hz/s and 0.05 Vn/s for the frequency and voltage
monitoring. As soon as the actual measurement value is outside the permitted range (altered
disconnection threshold), the inverter disconnects itself from the grid. In this way, the inverter
determines the reaction time and checks itself.
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Overvoltage Test
The inverter begins with the overvoltage test. During the
test sequence, the voltage limit applied is shown in the
display of the inverter.
The voltage limit is reduced successively until the shutdown threshold is achieved and the inverter disconnects
from the grid.
Once the inverter has disconnected from the grid, the display successively shows the following values
one after the other:
• Disconnection value,
• Calibration value,
• Reaction time,
• Current grid voltage.
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Undervoltage Test
After the overvoltage test, the inverter performs the
undervoltage test. During the test sequence, the current
calibration value of the voltage limit applied is shown in
the display of the inverter.
The voltage limit is increased successively until the
shutdown threshold is reached and the inverter
disconnects from the grid.
Once the inverter has disconnected from the grid, the display successively shows the following values
one after the other:
• Disconnection value,
• Calibration value,
• Reaction time,
• Present grid voltage.
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Maximum Frequency
In a third step, the inverter tests the maximum frequency.
During the test sequence, the frequency limit applied is
shown in the display of the inverter.
The frequency limit is reduced successively until the
shutdown threshold is reached and the inverter
disconnects from the grid.
Once the inverter has disconnected from the grid, the display successively shows the following values
one after the other:
• Disconnection value,
• Calibration value,
• Reaction time,
• Present grid frequency.
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Minimum Frequency
In the last step, the inverter tests the minimum frequency.
During the test sequence, the frequency limit applied is
shown in the display of the inverter.
The frequency limit is increased successively until the
shutdown threshold is reached and the inverter
disconnects from the grid.
Once the inverter has disconnected from the grid, the display successively shows the following values
one after the other:
• Disconnection value,
• Calibration value,
• Reaction time,
• Present grid frequency.
After the inverter has carried out the 4 tests, it switches to "MPP operation" mode. The original
calibration values are then re-set and the inverter automatically connects to the grid. If you would like
to carry out the test again, you must disconnect the inverter, i.e. disconnect it on the AC and DC sides
and then later re-activate it. You can then restart the self-test as described in section 6.2.1 ”Starting
the Self-Test by Tapping” (page 38). The inverter starts again the test sequence, as described in
section 6.2.2 ”Completion of the Self-Test” (page 38).
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Opening and Closing
7 Opening and Closing
7.1 Safety
DANGER!
Risk of lethal electric shock!
Before opening the inverter observe the following:
• Ensure that no voltage is present on the AC side.
• Ensure that no voltage is present on the DC side.
NOTICE!
Static discharges can damage the inverter!
Internal components of the inverter can be irreparably damaged by electrostatic
discharge.
• Ground yourself before you touch a component.
7.2 Opening the Inverter
1. Disconnect the line circuit breaker and prevent it from being reactivated.
2. Pull the Electronic Solar Switch downward, slightly
towards the wall.
3. Using a current probe, ensure that no current is
present at all DC cables.
☑ If current present, check the installation.
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4. Unlock all DC connectors. For this purpose, use a
screwdriver with a width of 3.5 mm.
– Insert a screwdriver into one of the side slits (1).
– Disconnect DC connectors (2).
DANGER!
Danger to life due to unsafe disconnection from the PV generator!
A secure separation from the PV generator is only guaranteed after pulling off the
Electronic Solar Switch and all DC connectors.
• Remove all DC connectors to completely
disconnect the PV generator from the
inverter.
5. Ensure that no voltage is present at the DC plugs on the inverter.
☑ If voltage is present, check the installation!
6. Pull out the AC plug.
7. Check whether all LEDs and the display have gone out.
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Opening and Closing
DANGER!
Danger to life due to high voltages in the inverter!
The capacitors in the inverter require 15 minutes to discharge.
• Wait 15 minutes before opening the inverter.
8. Loosen the screws of the enclosure lid.
9. Pull the lid forward smoothly.
☑ The inverter is now open and free of voltage.
7.3 Closing the Inverter
1. Secure the lid with the 4 screws and the safety
washers with the toothing facing toward the lid. The
screws must be tightened with approximately 6 Nm
torque to ensure the sealing of the enclosure and
the grounding of the lid.
DANGER!
Danger to life due to live lid!
The grounding of the lid is ensured by the safety washers.
• Fasten the safety washers for all 6 screws with the toothing facing toward the lid.
2. Check the DC plug connector for correct polarity and connect it.
To release the plug connectors see section 7.2 ”Opening the Inverter” (page 43).
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3. Close all unnecessary DC inputs as described in section 5.5.4 ”Connecting the PV Generator
(DC)” (page 33) to seal the inverter.
4. Connect the AC plug.
5. Check the Electronic Solar Switch for wear, as
described in section 8.2 ”Checking the Electronic
Solar Switch for Wear” (page 51) and attach it
firmly.
NOTICE!
The Electronic Solar Switch can be damaged if it is plugged on incorrectly!
• Do not tighten the screw inside the handle.
• Insert the handle of the Electronic Solar Switch securely in the socket on the bottom
of the enclosure.
• Check whether the handle of the Electronic Solar Switch is securely connected.
6. Switch on the line circuit breaker.
7. Check whether the inverter's display and LED
display indicate normal operating mode
(see section 6 ”Commissioning” (page 37)).
☑ The inverter is now closed and in operation.
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Maintenance and Cleaning
8 Maintenance and Cleaning
Check the correct operation of the inverter at regular intervals. Impurities such as dust or airborne
blossoms can cause heat concentration that can lead to yield losses. Also check the inverter and the
cables for visible external damage. Undertake repairs if necessary.
8.1 Checking Heat Dissipation
You only need to check the heat dissipation of the inverter if, during a visual inspection, you notice a
marked build-up in the fan screen or the inverter is increasingly observed to be in derating mode.
Whether the inverter switches to derating mode depends on the ambient temperature and cooling
efficiency.
8.1.1 Cleaning the Fan
If the fan screen is only covered in loose dust it can be cleaned with a vacuum cleaner. If you do not
achieve satisfactory results with a vacuum cleaner, dismantle the fans for cleaning.
Proceed as follows:
1. Disconnect the inverter from both the DC and AC connections, as described in section
7.2 ”Opening the Inverter” (page 43).
2. Wait for the fan to stop rotating.
Cleaning the Fan Screen
3. Remove the fan screen:
– Press both latches on the right of the fan screen
to the right using a screwdriver and loosen from
the bracket.
– Carefully remove the fan screen.
4. Clean the fan screen with a soft brush, a paint
brush, a cloth or pressurized air.
Cleaning the Fan
5. Push the two upper latches backward and the
lower latch forward.
6. Remove the fan by pulling it slowly and carefully
downward.
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7. Unlock and unplug the fan plug inside the inverter.
The fan cables are long enough that you can lift the fan far enough out to disconnect the internal
plug connector in the inverter.
8. Remove the fan.
9. Clean the fan with a soft brush, a paint brush, or a damp cloth.
NOTICE!
Damage to the fan through the use of pressurized air.
• Do not use pressurized air to clean the fan. This can damage the fan.
10. After cleaning, assemble everything in reverse order.
11. Check the functioning of the fan as described in the following section.
8.1.2 Checking the Fan
You can check that the fan is working in 2 ways:
• Set the "Fan-Test" parameter to "1" in the installer mode (using Sunny Data Control, Sunny
Explorer or Sunny WebBox).
or
• Plug the provided jumper into the sequential control system board.
Setting Parameters
1. Request the installer password from the SMA Serviceline (contact: see page 73).
2. Set the "Fan-Test" parameter to "1" in the installer mode.
3. Check the air-flow of the fan.
The inverter sucks air in from underneath and then blows it back out on the upper left side. Listen
for any unusual noise that could indicate incorrect installation or that the fan is faulty.
4. After checking the fan, set the "Fan-Test" parameter back to "0".
☑ You have finished checking the fan.
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Plugging the Jumper
The inverter recognizes the jumper only after the system has been restarted (i.e. all LEDs must have
gone out before a restart).
1. Open the inverter as described in section 7.2 ”Opening the Inverter” (page 43).
2. Plug the provided jumper in the socket on the sequential control system board as shown below.
3. Close the inverter as described in section 7.3 ”Closing the Inverter” (page 45).
4. Restart the inverter.
5. Check the air-flow of the fan.
The inverter sucks air in from underneath and then blows it back out on the upper left side. Listen
for any unusual noise that could indicate incorrect installation or that the fan is faulty.
6. Remove the jumper. Open and close the inverter as described in section 7 ”Opening and
Closing” (page 43).
☑ You have finished checking the fan.
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8.1.3 Cleaning the Ventilation Grids
There are ventilations grids on either side of the inverter. The inverter sucks air in from underneath
through the fan and blows it out again on the upper left side via the ventilation grids. For optimal heat
dissipation of the inverter, you only have to clean the left ventilation grid.
Procedure
1. Remove the left ventilation grid.
Insert your finger in the space between the
ventilation grid and the upper part of the enclosure
and remove the ventilation grid to the side.
2. Clean the ventilation grid with a soft brush, a paint
brush, or pressurized air.
3. Re-attach the ventilation grid to the inverter.
To help you identify the sides, the ventilation grids
are marked with "links/left" or "rechts/right" on the
inside.
☑ The ventilation grids are cleaned.
NOTICE!
Risk of damage to the inverter through intrusion of insects!
• The ventilation grids must not be removed permanently, because otherwise the
device is not protected against the entrance of insects.
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8.2 Checking the Electronic Solar Switch for Wear
Check the Electronic Solar Switch for wear before plugging it in. Depending on the shape of the
Electronic Solar Switch, you can estimate the wear on either the metal tongues (shape A) or on the
plastic (shape B).
Result
Measure
☑ The metal tongues in the Electronic Solar
1. Insert the handle of the Electronic Solar
Switch are undamaged and not discolored
Switch securely in the socket on the bottom
(A).
of the enclosure.
or
☑ The plastic in the Electronic Solar Switch is
undamaged (B).
☑ The metal tongues in the Electronic Solar
Switch have a brown discoloration or are
burned through (A).
or
☑ The plastic in the Electronic Solar Switch
shows thermal deformation (B).
Installation Guide
2. Commission the inverter as described in
section 6 ”Commissioning” (page 37).
The Electronic Solar Switch can no longer safely
disconnect the DC side.
1. Replace the Electronic Solar Switch handle
before attaching it again (order number see
section 12 ”Accessories” (page 72).
2. Commission the inverter as described in
section 6 ”Commissioning” (page 37).
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9 Troubleshooting
If the inverter displays blink codes or error messages other than those described in the following
section, contact the SMA Serviceline.
You will also find a description of display messages during operation, status messages and measuring
channels in the user manual provided.
Do not perform any repairs that are not described here and take advantage of the 24-hour
replacement service (inverter ready for shipping and handed over to a haulage company within
24 hours) and the SMA Solar Technology AG repair service instead.
9.1 Blink Codes
Green
is glowing continuously
Red
is not glowing
Yellow
is not glowing
is glowing continuously is not glowing
(3 x per second)
is glowing
continuously
is not glowing
is not glowing
is glowing continuously is not glowing
is flashing slowly
is not glowing
is flashing quickly
is not glowing
(1 x per second)
goes out briefly
is not glowing
is not glowing
is
glowing
continuously
is
not glowing
(approx. 1 x per second)
is not glowing
is not glowing
is not glowing
is not glowing
is glowing continuously is not glowing
glowing/flashing
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Status
OK
(feeding-in operation)
Ground fault or varistor
defective
OK
(initialization)
OK (stop)
Ground fault or varistor
defective
OK (waiting, grid
monitoring)
OK (derating)
Ground fault or varistor
defective
OK
(overnight shutdown)
Error
Ground fault or varistor
defective
Ground fault or varistor
defective and
disturbance
Installation Guide
SMA Solar Technology AG
Troubleshooting
9.2 Error Messages
When a disturbance occurs, the inverter generates a message which depends on the operating mode
and the type of the detected disturbance.
Message
!PV-Overvoltage!
!DISCONNECT DC!
Description and Corrective Measure
Overvoltage at DC input.
Overvoltage can destroy the inverter.
Corrective measures
Immediately disconnect the inverter from the grid.
1. Turn off the line circuit breaker.
2. Remove the Electronic Solar Switch.
3. Disconnect all the DC connectors.
4. Check DC voltage:
– If the DC voltage exceeds the maximum input voltage, check the
plant design or contact the person who installed the PV
generator.
– If the DC voltage is below the maximum input voltage,
reconnect the inverter to the PV generator as described in
section 5.5.4 ”Connecting the PV Generator (DC)” (page 33).
ACVtgRPro
If the message appears again, disconnect the inverter again and contact
the SMA Serviceline (see section 13 ”Contact” (page 73)).
The 10-minute-average grid voltage is no longer within the permissible
range. This can be caused by either of the following:
• The grid voltage at the connection point is too high.
• The grid impedance at the connection point is too high.
The inverter disconnects to assure compliance with the voltage quality of
the grid.
Corrective measures
Check the grid voltage at the connection point of the inverter:
• If, due to the local grid conditions, the grid voltage is 253 V or
more, ask the electric power company whether the voltage at the
feed-in point can be adjusted, or whether it would agree to an
alteration of the limit value of the ACVtgRPro parameter for voltage
quality monitoring.
Bfr-Srr
• If the grid voltage is continually within the acceptable range, and
this error is still displayed, contact the SMA Serviceline.
Internal measurement comparison fault or hardware defect.
Corrective measures
• If this fault continues to occur, contact the SMA Serviceline.
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Troubleshooting
SMA Solar Technology AG
Message
Derating
Description and Corrective Measure
The "Derating" operating mode is a normal operating mode which may
occur occasionally and can have several causes.
Once the inverter enters the "Derating" mode, it will display the "Derating"
warning until the next total shutdown of the device (at the end of the day).
Corrective measures
• Check heat dissipation as described in section 8.1 ”Checking Heat
Dissipation” (page 47).
Sudden changes in grid impedance exceed the permissible range ("Bfr"
or "Srr" are internal messages of no relevance for the user).
dZac-Bfr
dZac-Srr
For safety reasons, the inverter disconnects itself from the grid.
Corrective measures
Check the grid impedance and observe how often major deviations
occur.
• If repeated frequency variations occur and this is causing
"dZac-Bfr" or "dZac-Srr" errors, ask the electric power company if it
would agree to modify the operating parameters (dZac-Max).
• Discuss changing the operating parameter with the SMA
Serviceline.
Transition disturbance while data is being written or read from EEPROM.
The data is not relevant for safe operation
EEPROM
EEPROM dBh
• The disturbance has no effect on the performance of the inverter.
EEPROM data is defective, the device has switched off because the loss
of data has disabled important functions of the inverter.
Corrective measures
EeRestore
• Contact the SMA Serviceline.
One of the duplicate data sets in the EEPROM is defective and has been
reconstructed without loss of data.
Fac-Bfr
• The error message only serves to inform you and has no effect on
the performance of the inverter.
The grid frequency is no longer within the permissible range ("Bfr" or "Srr"
is an internal message of no relevance for the user). For safety reasons,
the inverter disconnects itself from the grid.
Fac-Srr
FacFast
Corrective measures
• If the grid frequency is within the tolerance range, yet "Fac-Bfr",
"Fac-Srr", or "FacFast" faults are being displayed often, contact the
SMA Serviceline.
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Message
Imax / overcurrent
K1-Close
Troubleshooting
Description and Corrective Measure
Overcurrent on the AC side. This message is displayed if the current on
the AC grid is larger than specified.
Corrective measures
• Check the plant design and grid conditions.
Error during relay test.
K1-Open
Corrective measures
MSD-Fac
• Contact the SMA Serviceline if this problem occurs often or several
times in succession.
Internal measurement comparison fault or hardware defect.
Corrective measures
MSD-Vac
• If this fault continues to occur, contact the SMA Serviceline.
Internal measurement comparison fault or hardware defect.
Corrective measures
MSD-Timeout
• If this fault continues to occur, contact the SMA Serviceline.
Internal measurement comparison fault or hardware defect.
Corrective measures
MSD-Zac
• If this fault continues to occur, contact the SMA Serviceline.
Internal measurement comparison fault or hardware defect.
Corrective measures
Offset
• If this fault continues to occur, contact the SMA Serviceline.
The "Offset" operating condition is a normal operating condition that
occurs prior to grid monitoring.
If "O-ffset" is displayed as an error, then there is a disturbance in the data
logging.
Corrective measures
Riso
• If this fault continues to occur, contact the SMA Serviceline.
The electrical insulation of the PV plant against ground is faulty. The
resistance between the DC plus and/or DC minus connection and ground
is outside the defined limit range.
Corrective measures
• Check the plant insulation.
ROM
• Check the plant for ground faults as described in section
9.3.1 ”Checking the PV Generator for a Ground Fault” (page 58).
The inverter firmware is faulty.
Corrective measures
• If this fault continues to occur, contact the SMA Serviceline.
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Troubleshooting
SMA Solar Technology AG
Message
Shutdown
Description and Corrective Measure
Temporary inverter disturbance.
Corrective measures
Trafo-Temp-F
Trafo-Temp-W
Vac-Bfr
Vac-Srr
• Contact the SMA Serviceline.
Temperatures in the transformer have exceeded the acceptable limit.
The inverter stops feeding the grid until the temperature lies within the
acceptable range.
Corrective measures
• If this problem recurs, check the heat dissipation of the inverter, as
described in section 8.1 ”Checking Heat Dissipation” (page 47).
Temperatures in the transformer have exceeded the acceptable limit. The
inverter stops feeding the grid until the temperature lies within the
acceptable range. The Trafo-Temp-W warning is displayed until final
shutdown (at the end of the day).
Corrective measures
• Check the heat dissipation of the inverter, as described in section
8.1 ”Checking Heat Dissipation” (page 47).
The grid voltage on line 2 is no longer within the permissible range ("Bfr"
or "Srr" is an internal message that has no meaning for the user). This
code can be caused by any of the following conditions:
• Grid disconnected (line circuit breaker, fuse),
• AC cable is broken or
• AC cable is highly resistive
For safety reasons, the inverter disconnects itself from the grid.
Corrective measures
• Check the grid current and grid connection on the inverter.
• If the grid voltage lies outside the acceptable range because of
local grid conditions, ask the electric power company if the
voltages can be adjusted at the feed-in point or if they agree to
changes in the values of the monitored operational limits (operating
parameters: Vac-Min and Vac-Max).
• If the grid frequency is within the tolerable range, yet "Vac-Bfr", or
"Vac-Srr" faults are still being displayed, please contact the
SMA Serviceline.
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Message
Vpv-Max
Troubleshooting
Description and Corrective Measure
Overvoltage at DC input. The inverter could be damaged.
Corrective measures
Immediately disconnect the inverter from the grid.
1. Turn off the line circuit breaker.
2. Remove the Electronic Solar Switch.
3. Disconnect all the DC connectors.
4. Check DC voltage:
– If the DC voltage exceeds the maximum input voltage, check the
plant design or contact the person who installed the PV
generator.
– If the DC voltage is below the maximum input voltage,
reconnect the inverter to the PV generator as described in
section 5.5.4 ”Connecting the PV Generator (DC)” (page 33).
Watchdog
If the message appears again, disconnect the inverter again and contact
the SMA Serviceline (see section 13 ”Contact” (page 73)).
Internal program run fault.
Watchdog-Srr
Corrective measures
Zac-Bfr
Zac-Srr
• If this fault continues to occur, contact the SMA Serviceline.
The grid impedance is no longer within the permissible range
("Bfr" or "Srr" is an internal message of no relevance for the user).
For safety reasons, the inverter disconnects itself from the grid. The
impedance is calculated from both the grid impedance and the
impedance of the AC cable of the inverter.
Corrective measures
• Check the grid impedance and grid connection on the inverter.
• Use an AC cable with an adequate cross-sectional area
(= low impedance) as described in section 5.3 ”Connection to the
Power Distribution Grid (AC)” (page 22). If required, check and retighten the screws on the AC terminals.
• If this fault recurs, contact the SMA Serviceline.
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Troubleshooting
SMA Solar Technology AG
9.3 Red LED is Glowing Continuously
If the red status display LED lights up continuously during operation, there is a ground fault in the
PV generator or at minimum one varistor for overvoltage protection is faulty.
Procedure
1. Check for ground faults in the PV generator as described in section 9.3.1 ”Checking the PV
Generator for a Ground Fault” (page 58).
2. If the red LED continues to glow, check the varistors as described in section 9.3.2 ”Checking the
Function of the Varistors” (page 60).
9.3.1 Checking the PV Generator for a Ground Fault
1. Disconnect the inverter from both the DC and AC connections as described in section
7.2 ”Opening the Inverter” (page 43).
DANGER!
Risk of lethal electric shock!
• Only touch the cables of the PV generator on their insulation.
• Do not connect strings with ground faults to the inverter.
NOTICE!
Excessive voltages can destroy the measuring device!
• Use only measuring devices with a DC input range of 1 000 V at minimum.
2. Measure the voltages between the plus pole of the
strings and the ground potential (PE).
3. Measure the voltages between the minus pole of
the strings and the ground potential (PE).
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Troubleshooting
4. Measure the voltages between the plus pole and
the minus pole of each string.
☑ If the voltages measured are stable and the total of the voltages from the plus pole against
ground potential and the minus pole against ground potential of a string roughly
corresponds to the voltage between the plus pole and minus pole, then there is a ground
fault.
Result
☑ You have found a ground fault.
Measure
• The installer of the PV generator must
remedy the ground fault in the affected
string. You can determine the location of the
ground fault as described below.
• Do not reconnect the faulty string.
☑ You have found no ground fault.
• Commission the inverter as described in
section 6.1 ”Commissioning the Inverter”
(page 37).
It is likely that one of the thermally monitored
varistors is defective.
• Check the varistors as described in section
9.3.2 ”Checking the Function of the
Varistors” (page 60).
Installation Guide
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Troubleshooting
SMA Solar Technology AG
Location of the ground fault
The approximate position of the ground fault can be determined from the ratio of the measured
voltages between the plus pole against ground potential (PE) and the minus pole against
ground potential (PE).
Example:
In this case, the ground fault is between the second and third PV module.
☑ The ground fault check is finished.
9.3.2 Checking the Function of the Varistors
Varistors are wear parts. Their functional efficiency diminishes with age or repeated strain as a result
of overvoltage. It is therefore possible that one of the thermally monitored varistors has lost its
protective function.
Position of Varistors
You can determine the position of the varistors using the illustration below. Observe the
following allocation of the terminals:
• Terminal A: outer terminal
(varistor connection with crimp)
• Terminal B: middle terminal
• Terminal C: outer terminal
(varistor connection without crimp)
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Troubleshooting
You can check the functionality of the varistors in the following manner:
1. Open the inverter as described in section 7.2 ”Opening the Inverter” (page 43).
2. Use a multimeter to ensure that all of the varistors in
the installed state have a conducting connection
between connectors B and C.
Result
Measure
☑ There is a conducting connection. There is probably a different fault in the inverter.
• Close the inverter as described in section
7.3 ”Closing the Inverter” (page 45).
☑ There is no conducting
connection.
• Contact the SMA Serviceline (see section
13 ”Contact” (page 73)).
The respective varistor is defective and must be replaced.
Varistor is generally due to influences that affect all
varistors similarly (temperature, age, induced
overvoltage). SMA Solar Technology AG recommends
replacing all varistors.
The varistors are specially manufactured for use in
inverters and are not commercially available. You must
order replacement varistors directly from SMA Solar
Technology AG (see section 12 ”Accessories”
(page 72)).
• To replace the varistors, proceed to step 3.
NOTICE!
Destruction of the inverter due to overvoltage.
If varistors are missing, the inverter is no longer protected against overvoltages.
• Provide for replacement varistors immediately and replace the faulty varistors.
• For systems with a high risk of overvoltage, do not operate inverters with faulty
varistors or no varistors at all.
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Troubleshooting
SMA Solar Technology AG
3. Insert an insertion tool into the openings of the
terminal contacts (1).
☑ The terminal clamps will loosen.
If you do not receive an insertion tool for operating
the terminal clamps with your replacement
varistors, contact SMA Solar Technology AG.
As an alternative, the individual terminal contacts
can be operated using a 3.5 mm wide screwdriver.
4. Remove varistor (2).
5. Insert new varistor (3).
The pole with the small loop (crimp) must be fitted
to terminal 1 when replacing the varistor.
6. Close the inverter as described in section
7.3 ”Closing the Inverter” (page 45).
☑ The check and replacement of the varistors is
completed.
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Decommissioning
10 Decommissioning
10.1 Dismantling the Inverter
DANGER!
Danger to life due to high voltages in the inverter.
• Disconnect the line circuit breaker and prevent it from being reactivated.
1. Remove the Electronic Solar Switch.
2. Release and remove all DC plug connectors (see
section 7.2 ”Opening the Inverter” (page 43)).
3. Remove the AC plug connector from the inverter.
4. Close the AC flange plug with the protecting cap.
5. Close all DC inputs with the corresponding DC plug connectors and sealing plugs.
Installation Guide
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Decommissioning
SMA Solar Technology AG
CAUTION!
Danger of burn injuries due to hot enclosure parts!
The inverter's enclosure can become hot during operation.
• Wait until the enclosure has cooled down.
6. If a communication cable is available:
– Open the inverter as described in section 7.2 ”Opening the Inverter” (page 43).
– Remove the communication cable from the inverter.
– Close the inverter as described in section 7.3 ”Closing the Inverter” (page 45).
7. Connect the Electronic Solar Switch.
NOTICE!
The Electronic Solar Switch can be damaged if it is plugged on incorrectly!
• Do not tighten the screw inside the handle.
• Insert the handle of the Electronic Solar Switch securely in the socket on the bottom
of the enclosure.
• Check whether the handle of the Electronic Solar Switch is securely connected.
8. Remove the safety screw.
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Decommissioning
9. Lift the inverter off the wall mounting bracket.
☑ The inverter is dismantled.
10.2 Packing the Inverter
If possible, always pack the inverter in its original packaging. If it is no longer available, you can also
use an equivalent carton. The box must be capable of being closed completely and made to support
both the weight and the size of the inverter.
10.3 Storing the Inverter
Store the inverter in a dry place where ambient temperatures are always between − 25 °C and
+60 °C.
10.4 Disposing of the Inverter
Dispose of the inverter at the end of its service life in accordance with the disposal regulations for
electronic waste which apply at the installation location at that time. Alternatively, send it back to
SMA Solar Technology AG with shipping paid by sender, and labeled "ZUR ENTSORGUNG"
("for disposal") (see section 13 ”Contact” (page 73)).
Installation Guide
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Technical data
SMA Solar Technology AG
11 Technical data
11.1 Sunny Boy 3300
DC Input
Maximum DC power
Maximum DC voltage*
MPP input voltage range
DC nominal voltage
PV start voltage, adjustable
Maximum input current
Maximum input current per string
Number of MPP trackers
Maximum number of parallel strings
Internal consumption during operation
3 820 W
500 V
200 V … 400 V
200 V
250 V
20 A
16 A
1
3
< 7 W
* The maximum open circuit voltage, which can occur at a cell temperature of − 10 °C, may not exceed the maximum input
voltage.
AC Output
Nominal AC power
Maximum AC power
Maximum output current
Maximum permissible fuse protection
Harmonic distortion of output current at
3 300 W
3 600 W
18 A
25 A
<3%
AC THD voltage < 2 %,
AC power > 0.5 AC nominal power
Nominal AC voltage
AC voltage range
AC side
Tolerance at AC grid frequency
Power factor at nominal AC power
Overvoltage category
Test voltage at 50 Hz
Surge testing voltage
Surge testing voltage with serial interface
AC connection
Internal consumption in night mode
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220 V / 230 V / 240 V
180 V … 265 V
50 Hz / 60 Hz
± 4.5 Hz
1
III
1.4 kV
4 kV
6 kV
Single-phase
< 0.1 W
Installation Guide
SMA Solar Technology AG
Technical data
Mechanical Data
Width x height x depth
Weight
450 mm x 352 mm x 236 mm
38 kg
Climatic Conditions
Extended temperature range*
Extended air humidity range*
Extended air pressure range*
Temperature range**
Operating temperature range
Maximum operating altitude above mean sea
level
− 25 °C … +60 °C
0 % … 100 %
79.5 kPa … 106 kPa
− 25 °C … +70 °C
− 25 °C … +60 °C
2 000 m
* according to DIN EN 50178:1998-04, installation type C, class 4K4H
** according to DIN EN 50178:1998-04, transport type E, class 2K3
Features
Topology
Cooling concept
Fan connection
LF transformer
OptiCool
Designed for safe disconnection
In accordance with DIN EN 60529
General Data
Protection rating*
Protection class
Noise emission (typical)
IP65
I
≤ 40 dB(A)
* according to DIN EN 60529
Protective Devices
All-pole DC disconnection unit
DC overvoltage protection
Personal protection (Riso > 1 M Ω )
Reverse polarity protection
AC short circuit protection
All-pole AC disconnection unit
Installation Guide
Electronic Solar Switch,
DC plug system SUNCLIX
Thermally monitored varistors
Insulation monitoring
Short circuit diode
Current control
Automatic disconnection device
SMA Grid Guard 2.1
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Technical data
SMA Solar Technology AG
Communication Interfaces
RS485, galvanically isolated
Radio
Bluetooth® Wireless Technology
optional
optional
optional
Electronic Solar Switch
Electric service life in the event of a short-circuit,
with a nominal current of 30 A
Maximum switching current
Maximum switching voltage
Maximum PV power
Protection rating when plugged
Protection rating when unplugged
A minimum of 50 switching operations
30 A
800 V
10 kW
IP65
IP21
Efficiency
Maximum efficiency
European efficiency
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ηmax
ηEU
95.2 %
94.4 %
Installation Guide
SMA Solar Technology AG
Technical data
11.2 Sunny Boy 3800
DC Input
Maximum DC power
Maximum DC voltage*
MPP input voltage range
DC nominal voltage
PV start voltage, adjustable
Maximum input current
Maximum input current per string
Number of MPP trackers
Maximum number of parallel strings
Internal consumption during operation
4 040 W
500 V
200 V … 400 V
200 V
250 V
20 A
16 A
1
3
< 7 W
* The maximum open circuit voltage, which can occur at a cell temperature of − 10 °C, may not exceed the maximum input
voltage.
AC Output
Nominal AC power
Maximum AC power
Maximum output current
Maximum permissible fuse protection
Harmonic distortion of output current at
3 800 W
3 800 W
18 A
25 A
<3%
AC THD voltage < 2 %,
AC power > 0.5 AC nominal power
Nominal AC voltage
AC voltage range
AC side
Tolerance at AC grid frequency
Power factor at nominal AC power
Overvoltage category
Test voltage at 50 Hz
Surge testing voltage
Surge testing voltage with serial interface
AC connection
Internal consumption in night mode
Installation Guide
220 V / 230 V / 240 V
180 V … 265 V
50 Hz / 60 Hz
± 4.5 Hz
1
III
1.4 kV
4 kV
6 kV
Single-phase
< 0.1 W
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Technical data
SMA Solar Technology AG
Mechanical Data
Width x height x depth
Weight
450 mm x 352 mm x 236 mm
38 kg
Climatic Conditions
Extended temperature range*
Extended air humidity range*
Extended air pressure range*
Temperature range**
Operating temperature range
Maximum operating altitude above mean sea
level
− 25 °C … +60 °C
0 % … 100 %
79.5 kPa … 106 kPa
− 25 °C … +70 °C
− 25 °C … +60 °C
2 000 m
* according to DIN EN 50178:1998-04, installation type C, class 4K4H
** according to DIN EN 50178:1998-04, transport type E, class 2K3
Features
Topology
Cooling concept
Fan connection
LF transformer
OptiCool
Designed for safe disconnection
In accordance with DIN EN 60529
General Data
Protection rating*
Protection class
Noise emission (typical)
IP65
I
≤ 42 dB(A)
* according to DIN EN 60529
Protective Devices
All-pole DC disconnection unit
DC overvoltage protection
Personal protection (Riso > 1 M Ω )
Reverse polarity protection
AC short circuit protection
All-pole AC disconnection unit
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Electronic Solar Switch,
DC plug system SUNCLIX
Thermally monitored varistors
Insulation monitoring
Short circuit diode
Current control
Automatic disconnection device
SMA Grid Guard 2.1
Installation Guide
SMA Solar Technology AG
Technical data
Communication Interfaces
RS485, galvanically isolated
Radio
Bluetooth
optional
optional
optional
Electronic Solar Switch
Electric service life in the event of a short-circuit,
with a nominal current of 30 A
Maximum switching current
Maximum switching voltage
Maximum PV power
Protection rating when plugged
Protection rating when unplugged
A minimum of 50 switching operations
30 A
800 V
10 kW
IP65
IP21
Efficiency
Maximum efficiency
European efficiency
Installation Guide
ηmax
ηEU
95.6 %
94.7 %
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Accessories
SMA Solar Technology AG
12 Accessories
You will find the corresponding accessories and replacement parts for your product in the following
overview. If required, you can order these from SMA Solar Technology AG or your dealer.
Description
Ventilation grids
Brief description
Ventilation grid set "right and left" as replacement
part
Electronic Solar Switch ESS handle replacement part
Replacement varistors
Insertion tool for
replacing the varistors
Positive grounding set
ESS-HANDLE:02
Also enter the inverter’s
serial number.
Set of thermally monitored varistors (2) including
SB-TV4
insertion tool
Insertion tool for varistors
SB-TVWZ
Upgrade kit for the positive connection to ground
of the DC input
Negative grounding set Upgrade kit for the negative connection to
ground of the DC input
RS485 upgrade kit
RS485 interface
Bluetooth upgrade kit Bluetooth interface
SUNCLIX DC plug
Field connector for conductor cross sections
connector
2.5 mm² … 6 mm²
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SMA order number
45-7202
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ESHV-P-NR
ESHV-N-NR
485PB-NR
BTPBINV-NR
SUNCLIX-FC6-SET
Installation Guide
SMA Solar Technology AG
Contact
13 Contact
If you have technical problems concerning our products, contact the SMA Serviceline. We require the
following information in order to provide you with the necessary assistance:
• Inverter type
• Inverter serial number
• Type and number of connected PV modules
• Blink code or display message of the inverter
• Optional equipment, e.g. communication devices
SMA Solar Technology AG
Sonnenallee 1
34266 Niestetal, Germany
www.SMA.de
SMA Serviceline
Inverters:
+49 561 9522 1499
Communication:
+49 561 9522 2499
Fax:
+49 561 9522 4699
E-Mail:
[email protected]
Installation Guide
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SMA Solar Technology AG
Legal Restrictions
The information contained in this document is the property of SMA Solar Technology AG. Publishing its content, either partially or
in full, requires the written permission of SMA Solar Technology AG. Any internal company copying of the document for the
purposes of evaluating the product or its correct implementation is allowed and does not require permission.
Exclusion of liability
The general terms and conditions of delivery of SMA Solar Technology AG shall apply.
The content of these documents is continually checked and amended, where necessary. However, discrepancies cannot be
excluded. No guarantee is made for the completeness of these documents. The latest version is available online at www.SMA.de
or from the usual sales channels.
Guarantee or liability claims for damages of any kind are excluded if they are caused by one or more of the following:
• Damages during transportation
• Improper or inappropriate use of the product
• Operating the product in an unintended environment
• Operating the product whilst ignoring relevant, statutory safety regulations in the deployment location
• Ignoring safety warnings and instructions contained in all documents relevant to the product
• Operating the product under incorrect safety or protection conditions
• Altering the product or supplied software without authority
• The product malfunctions due to operating attached or neighboring devices beyond statutory limit values
• In case of unforeseen calamity or force majeure
The use of supplied software produced by SMA Solar Technology AG is subject to the following conditions:
• SMA Solar Technology AG rejects any liability for direct or indirect damages arising from the use of software developed by
SMA Solar Technology AG. This also applies to the provision or non-provision of support activities.
• Supplied software not developed by SMA Solar Technology AG is subject to the respective licensing and liability agreements
of the manufacturer.
SMA Factory Warranty
The current guarantee conditions come enclosed with your device. These are also available online at www.SMA.de and can be
downloaded or are available on paper from the usual sales channels if required.
Trademarks
All trademarks are recognized even if these are not marked separately. Missing designations do not mean that a product or brand
is not a registered trademark.
The Bluetooth® word mark and logos are registered trademarks owned by Bluetooth SIG, Inc. and any use of such marks by SMA
Solar Technology AG is under license.
SMA Solar Technology AG
Sonnenallee 1
34266 Niestetal
Germany
Tel. +49 561 9522-0
Fax +49 561 9522-100
www.SMA.de
E-Mail: [email protected]
© 2004 to 2010 SMA Solar Technology AG. All rights reserved
Installation Guide
SB33_38-IEN111851
75
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