User Manual
SG2KTL-S / SG3KTL-S / SG3KTL-D / SG5KTL-D
PV Grid-Connected Inverter
SG2_3_5KTL V21-UEN-Ver20-201608 Version:2.0
About This Manual
The manual mainly describes the product information, guidelines for installation,
operation and maintenance. The manual cannot include complete information
about the photovoltaic (PV) system. You can get additional information about other
devices at www.sungrowpower.com or on the webpage of the device manufacturer.
Applicability
This manual is applicable to the following inverter types:
 SG2KTL-S
 SG3KTL-S
 SG3KTL-D
 SG5KTL-D
They will be referred to as “inverter” hereinafter unless otherwise specified.
Target Group
This manual is intended for:
 qualified personnel who are responsible for the installation and commissioning
of the inverter; and
 inverter owners who will have the ability to interact with the inverter.
How to Use This Manual
Read the manual and other related documents before any work on the inverter is
carried out. Documents must be stored carefully and be available at all times.
All rights to the content of this manual are owned by Sungrow Power Supply Co., Ltd.
(hereinafter “SUNGROW”). No part of this document can be modified, distributed,
reproduced or published in any form or by any means without prior written
permission from SUNGROW.
Contents may be periodically updated or revised due to product development. The
information in this manual is subject to change without notice. The latest manual
can be acquired at www.sungrowpower.com.
I
Symbols
Safety instructions will be highlighted with the following symbols.
Symbol
Explanation
Indicates a hazard with a high level of risk that, if not avoided,
will result in death or serious injury.
Indicates a hazard with a medium level of risk that, if not
avoided, could result in death or serious injury.
Indicates a hazard with a low level of risk that, if not avoided,
could result in minor or moderate injury.
Indicates a situation that, if not avoided, could result in
equipment or property damage.
Indicates additional information, emphasized contents or tips
that may be helpful, e.g. to help you solve problems or save
time.
II
Contents
About This Manual .......................................................................... I 1 Safety ........................................................................................ 1 1.1 General Safety .........................................................................................................1 1.2 Inverter ......................................................................................................................2 1.3 Skills of Qualified Personnel ...............................................................................3 2 Product Introduction ............................................................... 4 2.1 Intended Use ...........................................................................................................4 2.2 Inverter ......................................................................................................................5 2.2.1 Appearance ................................................................................................................. 5 2.2.2 Dimensions and Weight ......................................................................................... 6 2.2.3 LED Indicator Panel .................................................................................................. 6 2.3 Function Description ............................................................................................7 2.4 AS4777:2015 Compliant ......................................................................................8 2.4.1 External Demand Response .................................................................................. 8 2.4.2 Reactive Power Regulation.................................................................................... 9 2.4.3 Power Quality Response ......................................................................................... 9 3 Unpacking and Storage ......................................................... 10 3.1 Unpacking and Inspection .............................................................................. 10 3.2 Identifying the Inverter ..................................................................................... 11 3.3 Delivery Contents ............................................................................................... 12 3.4 Storage of Inverter.............................................................................................. 12 4 Mechanical Mounting ............................................................ 13 4.1 Safety during Mounting ................................................................................... 13 4.2 Location Requirements..................................................................................... 13 4.3 Installing the Inverter ........................................................................................ 16 5 Electrical Connection ............................................................. 18 5.1 Terminal Description ......................................................................................... 19 III
5.2 Connection Overview ....................................................................................... 19 5.3 Grounding the Inverter .................................................................................... 20 5.4 Grid Connection.................................................................................................. 21 5.4.1 AC Side Requirements .......................................................................................... 21 5.4.2 Assembling the AC Connector........................................................................... 22 5.4.3 Installing the AC Connector ............................................................................... 23 5.5 PV Connection ..................................................................................................... 23 5.5.1 PV Inputs Configuration ...................................................................................... 24 5.5.2 Assembling the PV Connector ........................................................................... 26 5.5.3 Installing the PV Connector................................................................................ 27 6 Communication ......................................................................29 6.1 Communication Terminal ................................................................................ 29 6.2 Distance Requirements .................................................................................... 30 6.2.1 Scenario 1: No Barriers.......................................................................................... 30 6.2.2 Scenario 2: On Different Floors ......................................................................... 31 6.2.3 Scenario 3: In Different Rooms on the Same Floor .................................... 32 6.3 SolarInfo Home APP........................................................................................... 32 6.3.1 Acquisition and Installation ................................................................................ 32 6.3.2 Visiting Inverter via “[Direct visit]” Mode ....................................................... 35 6.3.3 Visiting Inverter via “Remote [Login]” Mode ................................................ 37 7 Commissioning.......................................................................39 7.1 Inspection before Commissioning ............................................................... 39 7.2 Commissioning Procedure .............................................................................. 39 8 System Decommissioning .....................................................41 8.1 Disconnecting the Inverter ............................................................................. 41 8.2 Dismantling the Inverter.................................................................................. 42 8.3 Disposing of the Inverter ................................................................................. 42 9 Troubleshooting and Maintenance ......................................43 9.1 Troubleshooting ................................................................................................. 43 9.1.1 For LED Indicator .................................................................................................... 43 9.1.2 For the Faults on the APP or Screen ................................................................ 44 IV
9.2 Routine Maintenance ........................................................................................ 49 10 FAQs for SolarInfo Wi-Fi ......................................................... 51 10.1 Cannot Find Wi-Fi Signal of Inverter ............................................................ 51 10.2 Too Weak Wi-Fi Signal of Inverter .................................................................. 51 10.3 Cannot Find Wi-Fi Network of Router .......................................................... 53 10.4 Cannot Connect to Wi-Fi Network of Router ............................................ 54 10.5 Transmission Signal Strength of Different Materials .............................. 56 10.6 Cannot Find Running Data on Server .......................................................... 56 11 Appendix ................................................................................ 57 11.1 Technical Data ...................................................................................................... 57 11.2 Exclusion of Liability .......................................................................................... 59 11.3 About Us ................................................................................................................ 60 V
1 Safety
The inverter has been designed and tested strictly according to international safety
regulations. Read all safety instructions carefully prior to any work and observe
them at all times when working on or with the inverter.
Incorrect operation or work may cause:
 injury or death to the operator or a third party; or
 damage to the inverter and other properties belonging to the operator or a third
party.
All detailed work-related safety warnings and notes will be specified at critical points
in this manual.
1.1 General Safety
PV Panels
Please follow the safety instructions related to the PV array.
Lethal voltage!
PV strings will produce electrical power when exposed to sunlight and can
cause a lethal voltage and an electric shock.
Only qualified personnel can perform the wiring of the PV panels.
Utility Grid
Please follow the regulations related to the utility grid.
All electrical connections must be in accordance with local and national
standards.
Only with the permission of the utility grid, the inverter can be connected to
the utility grid.
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1 Safety
User Manual
1.2 Inverter
There is a warning label on the inverter body.
Disconnect the inverter from all the external power sources
before service!
Do not touch live parts until 10 minutes after disconnection
from the power sources.
There is a danger from a hot surface that may exceed 60°C.
Danger to life due to high voltages!
Only qualified personnel can open and service the inverter.
Check the user manual before service!
Danger to life from electric shocks due to live voltage
 Do not open the enclosure at any time. Loss of any or all the rights may follow
if otherwise.
 When the enclosure lid is removed, live components can be touched which
can result in death or serious injury due to electric shock.
Danger to life from electric shock due to damaged inverter
 Only operate the inverter when it is technically faultless and in a safe state.
 Operating a damaged inverter can lead to hazardous situations that can result
in death or serious injuries due to electric shock.
Risk of inverter damage or personal injury
DO not pull out the PV connectors while the inverter is under AC loads!
De-energize the inverter from dual power sources and verify that there is no
voltage.
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1 Safety
All the warning labels and nameplate on the inverter body:
 must be clearly visible; and
 must not be removed, covered or pasted.
Risk of burns due to hot components!
DO not touch the hot parts (such as heat sink) during operation. Only the
LED indicator panel and the optional DC switch can be touched.
Only qualified personnel can change the country setting.
Unauthorized alteration of the country setting may cause a breach of the
type-certificate marking.
Inverter damage due to electrostatic discharge (ESD).
By touching the electronic components, you may damage the inverter. For
inverter handling, be sure to:
 avoid any unnecessary touching; and
 wear a grounding wristband before touching any connections.
1.3 Skills of Qualified Personnel
Qualified personnel must have the following skills:
 training in the installation and commissioning of the electrical system, as well as
the dealing with hazards;
 knowledge of the manual and other related documents; and
 knowledge of the local regulations and directives.
3
2 Product Introduction
2.1 Intended Use
The inverters, which are single-phase string inverters without transformer, are the
crucial units between the PV array and the utility grid in a PV power system.
The inverter is dedicated to converting the DC power generated by the PV array into
the AC power, which conforms to the parameters of the local utility grid and is fed
into the utility grid. An example about the intended use is shown in Fig. 2-1.
Fig. 2-1 Application in a PV Power System
Item
Description
Remarks
A
PV strings
Monocrystalline silicon, polycrystalline
thin-film without grounding
B
Inverter
SG2KTL-S, SG3KTL-S, SG3KTL-D or SG5KTL-D
C
Metering
device
Meter cupboard with power distribution system
D
Utility grid
Line types: TT, TN
silicon
and
Any use other than the intended use is not permitted.
It is not permitted for the positive pole or the negative pole of the PV strings
to be grounded.
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2 Product Introduction
For the TT utility grid, the N line voltage to ground must be less than 30 V.
Do not connect local loads (such as home appliances, lights, motor loads,
etc.) between the inverter and the AC circuit breaker.
2.2 Inverter
2.2.1 Appearance
Fig. 2-2 Inverter Appearance
* The image shown here is for reference only. The actual product you receive may
differ.
Item
Name
Description
1
2
3
LED indicator panel
DC terminals
DC switch (optional)
4
RS485 terminal
5
6
Second PE terminal
AC terminal
7
Mounting rack
Human-computer interaction interface.
To connect the PV array. A pair or two pairs.
To disconnect the DC current safely.
To connect the Wi-Fi module, eShow module,
or ZE100 module.
For reliable grounding.
To feed power into the utility grid.
To hang the inverter to the wall-mounting
bracket.
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2 Product Introduction
User Manual
2.2.2 Dimensions and Weight
Fig. 2-3 Dimensions of the Inverter
Tab. 2-1 Dimensions and Weight
Type
W(mm)
H(mm)
D(mm)
Net weight(kg)
SG2KTL-S/SG3KTL-S
SG3KTL-D/SG5KTL-D
300
360
370
390
125
133
9
11
2.2.3 LED Indicator Panel
User can observe the color and blinking frequency of the indicator to get the current
state of the inverter.
Fig. 2-4 LED Indicator Panel
For indicator state descriptions, see Tab. 7-1.
The LED indicator will be red and green at the same time when the
inverter is in upgrade status. If in other status, please contact the service
provider for troubleshooting.
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User Manual
2 Product Introduction
2.3 Function Description
Inverter functions can be grouped as follows:
 Conversion function
Inverter converts the DC power into the AC power, which conforms to the grid
requirement of its installation country.
 Data storage
Inverter archives essential data including running information and fault records.
 Parameter configuration
Inverter provides various parameter configurations for optimal operation. You
can set the country by APP, if you need a more professional setting, please
contact SUNGROW.
 Communication interface
You can choose the RS485 terminal for connecting a communication or
monitoring device to the PV system, such as eShow, eShow+, ZE100 and so on.
 Earth fault alarm
If an earth fault occurs, the fault code will be displayed on the LCD screen of
eShow/eShow+/ZE100. The buzzer inside the eShow/eShow+/ZE100 will beep to
signal an external alarm.
 Protection functions include:
− short circuit protection;
− grounding insulation resistance surveillance;
− inverter output voltage surveillance;
− inverter output frequency surveillance;
− residual current protection;
− DC injection of AC output current surveillance;
− anti-islanding protection;
− ambient temperature surveillance;
− DC overvoltage protection;
− overcurrent protection; and
− over-temperature protection.
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2 Product Introduction
User Manual
2.4 AS4777:2015 Compliant
The inverter supports the demand response modes (DRMs), the reactive power
regulation, and the power quality response, as specified in the standard AS
4777:2015.
 External Demand Response
 Reactive Power Regulation
 Power Quality Response
For details about the connection and settings, see the Quick User Manual delivered
with the eShow module or ZE100 module.
2.4.1 External Demand Response
The inverter provides a RJ45 port for connecting to the communication module
eShow/eShow+/ZE100 that with a DRM port for connecting to a demand response
enabling device (DRED). The DRED asserts demand respond modes (DRMs). The
inverter detects and initiates a response to the supported demand response
commands within 2 s.
Tab. 2-2 Demand Response Modes (DRMs)
Mode
Explanation
DRM0
DRM5
DRM6
DRM7
The inverter is in the state of standby.
The export power to the grid is 0%.
The export power to the grid is no more than 50% of the rated power.
The export power to the grid is no more than 75% of the rated power.
The export power to the grid is 100%, but subject to the constraints from
other active DRMs.
DRM8
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2 Product Introduction
2.4.2 Reactive Power Regulation
The inverter is capable of operating in reactive power regulation modes for the
purpose of providing support to the grid. These various operating modes can be
enabled or disabled via the LCD menu.
 PF: Fixed power factor mode.
 Qt: Fixed reactive power mode.
 Q(p): The PF of the inverter output varies in response to the output power of the
inverter.
 Q(u): The reactive power output of the inverter varies in response to the grid
voltage.
2.4.3 Power Quality Response
The inverter supports two power quality response modes, which can be set via the
LCD menu.
 Power derating for voltage variations:
Define the response curve with four reference voltages. The power output or
input will vary in response to the voltage curve.
 Power derating for frequency variations:
Define the response curve with a start frequency and an end frequency. The
inverter will reduce the power output in response to an increase in grid
frequency.
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3 Unpacking and Storage
3.1 Unpacking and Inspection
The inverter is thoroughly tested and strictly inspected before delivery. Damage
may still occur during shipping. Conduct a thorough inspection after receiving the
device.
1.
Check the packaging for any visible damage.
2.
Check the inner contents for damage after unpacking.
3.
Check the delivery contents for completeness according to the packaging
list.
Contact SUNGROW or the distributor in case of any damaged or missing
components.
It is the best choice to store the inverter in the original packaging. So, do not
dispose of it.
Fig. 3-1 Single Inverter Packaging
Type
W (mm)
H (mm)
D (mm)
SG2KTL-S/SG3KTL-S
SG3KTL-D/SG5KTL-D
500
530
210
215
385
445
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User Manual
3 Unpacking and Storage
3.2 Identifying the Inverter
The nameplate clearly identifies the product. It is attached to the side of the inverter.
Fig. 3-2 Nameplate of Inverter
* The image shown here is for reference only. The actual product you receive may
differ.
Item
Description
Item
Description
1
SUNGROW logo and product
type
3
Marks of certification institutions
2
Technical data
4
Barcode, company name and
origin
Tab. 3-1 Description of Icons on the Nameplate
Icon
Description
C-tick mark of conformity.
Do not dispose of the inverter together with household waste.
The inverter does not have a transformer.
Refer to the corresponding instructions.
CE mark of conformity.
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3 Unpacking and Storage
Icon
User Manual
Description
TUV mark of conformity.
3.3 Delivery Contents
Fig. 3-3 Delivery Contents
a) One pair for the –S series and two pairs for the –D series.
b) The documents include the Quick User Manual, 1 CD, quality certificates,
packaging list and product test reports.
c) It is delivered only for the countries except Australia.
3.4 Storage of Inverter
If you do not install the inverter immediately, choose an appropriate location to
store it.
 Store the inverter in the original packaging with the desiccant inside.
 The storage temperature should be always between -30°C and +85°C, and the
storage relative humidity should be always between 0 and 100%.
 If there is more than one inverter to be stored, the maximum layer is 9.
 The packaging should be upright.
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4 Mechanical Mounting
4.1 Safety during Mounting
Make sure there is no electrical connection before installation.
In order to avoid electric shock or other injury, be sure there is no electricity
or plumbing installations before drilling holes.
Risk of injury due to improper handling
 The weight can cause injuries, serious wounds, or bruise.
 Always follow the instructions when moving and positioning the inverter.
System performance loss due to bad ventilation!
 The inverter requires good ventilation during operation. Keep it upright
and nothing covering the heat sink.
Wear gloves to avoid scratches when mounting the inverter.
4.2 Location Requirements
The inverter with IP65 can be installed indoors or outdoors.
Selecting an optimal location for the inverter is critical for its operating safety as well
as the expected efficiency and service life. Considerations for the location include:
1.
The concrete wall should be suitable for the weight and dimensions of the
inverter.
2.
Install the inverter where it is convenient for installation, cable connection
and service.
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4 Mechanical Mounting
User Manual
3.
Do not install the inverter in the living area or bedrooms. The noise during its
operation may affect daily life.
4.
The location should be not accessible to children.
5.
The max. output power will reduce when the ambient temperature exceeds
45°C. The following figure shows the ambient temperature and relative
humidity limits.
6.
The location should be not flammable materials (except the wooden wall),
away from flammable materials or gas, and not enclosed.
7.
The shaded side of the building would be better to prevent the inverter from
exposure to the sun, rain, and snow.
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User Manual
4 Mechanical Mounting
9.
Install vertically for good heat
dissipation.
8.
Place at eye level for easy
viewing:
10.
Never install the inverter horizontally, or with a forward tilt or with a
backward tilt or even with upside down. The horizontal installation could
result in damage to the inverter.
11.
Clearance requirement and multiple installation:
For multi-row installation, the distance between two adjacent rows should be at
least 400 mm.
Refer to ”6.2 Distance Requirements” for details if a Wi-Fi module or ZE100 is
equipped.
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4 Mechanical Mounting
User Manual
4.3 Installing the Inverter
Inverter is installed on the wall by means of wall-mounting bracket and the
expansion plug sets.
The expansion plug set shown below is recommended for the installation.
1.
Place the wall-mounting bracket
to the wall and adjust it until it is
in a horizontal position. Mark the
positions.
2.
Drill holes and install the wall-mounting bracket. The depth of the holes
should be about 70 mm.
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User Manual
4 Mechanical Mounting
3.
Mount the inverter to the bracket, and secure it with an M4 screw (torque: 1.5
Nm).
4.
(Optional) Install the communication module to the inverter. The following
figure takes the eShow module as an example.
Refer to the manual delivered with the module for details.
 eShow module: eShow User Manual
 ZE100: ZE100 Quick Installation Guide
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5 Electrical Connection
Prior to any electrical connections, keep in mind that the inverter has dual power
supplies. It is mandatory for the technical personnel to wear personal protective
equipments (PPE) during the electrical work: helmet, footwear and gloves.
Danger to life due to a high voltage inside the inverter
 Make sure that the cables are not live before electrical connection.
 Do not turn on the AC circuit breaker until all the electrical connections
are completed.
Improper operation during the wiring process can cause fatal injury to the
operators or unrecoverable damage to the inverter.
Only qualified personnel can perform the wiring work.
All cables must be firmly attached, undamaged, properly insulated and
adequately dimensioned.
Comply with the safety instructions related to the PV array and the
regulations related to the utility grid.
All electrical connections must be in accordance with local and national
standards.
Only with the permission of the utility grid, the inverter can be connected to
the utility grid.
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User Manual
5 Electrical Connection
5.1 Terminal Description
All electrical terminals are located at the bottom of the inverter.
Fig. 5-1 Terminal Description
* The image shown here is for reference only. The actual product you receive may
differ.
Tab. 5-1 Terminal Descriptions
Item
Terminal
Description
1
2
3
4
DC
RS485 terminal
Second PE terminal
AC
MC4 terminals for PV input.
For Wi-Fi module, eShow module, or ZE100 module.
For reliable grounding.
The AC terminal to the utility grid.
5.2 Connection Overview
Electrical connections of the inverter include grounding, DC connection and AC
connection. Refer to Chapter 6 for the communication connection.
Fig. 5-2 Electrical Connection Diagram
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5 Electrical Connection
User Manual
Item
Name
Remarks
A
PV array
-S series: one input area with one pair of terminals.
-D series: two input areas with two pairs of terminals.
B
Communication
module
Take the SolarInfo Wi-Fi module as an example.
C
AC circuit breaker
D
Utility grid
Used as a protective device during electrical
connection. User equips this device according to the
maximum output voltage and current.
The PE wire of the AC terminal must be directly
connected to the grounding bar. Do not connect it to
protection devices such as circuit breaker.
Nominal line-to-neutral voltage of the utility grid is
220 Vac/230 Vac.
If there are several inverters connected to the grid in parallel, each phase of
the transformer can connect 10 inverters at most. Please contact SUNGROW
for a technical evaluation if more than 10 inverters are connected.
5.3 Grounding the Inverter
All non-current carrying exposed metal parts of the equipment and other
enclosures in the PV power system should be grounded, e.g. PV array frame and
inverter enclosure.
A second Protective Earth (PE) terminal is equipped at the bottom of the inverter. Be
sure to connect this PE terminal for reliable grounding.
In no case shall the second PE connection substitute for the PE connection in
the AC terminal block. Be sure to connect both PE terminals for reliable
grounding. The loss of any or all rights may follow if otherwise.
Because of the transform-less design of the inverter, neither the DC positive
pole nor the DC negative pole are permitted to be grounded. A permanent
destroy to the inverter may follows if otherwise.
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User Manual
5 Electrical Connection
Item
Description
A
Screw (M4×12 mm)
B
C
D
E
Spring washer
Washer
Cable socket
Yellow-green cable
Fig. 5-3 Second PE Connection
* The cross-section of the PE cable should be at least 10 mm2 if copper or 16 mm2 if
aluminum. The connection parts are not included in the delivery scope.
5.4 Grid Connection
The inverter is connected to the grid via 3 wires (L, N and PE).
Inverter is equipped with the water-proof direct plug-in connector which matches
the AC terminal at the bottom of the inverter.
5.4.1 AC Side Requirements
AC Circuit Breaker
An independent two-pole AC circuit breaker for the inverter must be installed at the
output side for safe disconnection. The recommended specifications are as follows:
Inverter Type
Specification
SG2KTL-S/SG3KTL-S/SG3KTL-D
SG5KTL-D
25A
32A
 It is not allowed for several inverters to use the same AC circuit breaker.
 It is not allowed to connect loads between the inverter and the AC circuit
breaker.
Residual Current Device
With an integrated universal current-sensitive residual current monitoring unit
inside, the inverter will disconnect immediately from the mains power as soon as a
fault current with a value exceeding the limit has been detected.
However if an external residual current device (RCD) is mandatory, the switch must
be triggered at a failure current of 300 mA or higher.
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5 Electrical Connection
User Manual
AC Cable Requirements
The recommended specifications are shown in the following table
Type
SG2KTL-S/SG3KTL-S/
SG3KTL-D
SG5KTL-D
Cross-section (mm²)
Cable diameter (mm)
Range
Recommended
Range
Recommende
d
4…6
4
10…14
14
4…6
6
10…14
14
5.4.2 Assembling the AC Connector
1.
Lead the AC cable through the
cable gland and the housing.
3.
Fully insert the conductors to
the corresponding terminal
and tighten the screws with the
torque 1.2 Nm. Pull cables
outward to check whether they
are firmly installed.
2.
Remove the cable jacket by
40 mm, and strip the wire
insulation by 8-15 mm.
Observe the terminal layout of AC connector.
Do not connect the phase lines to “PE” terminal, otherwise the inverter
will not function properly.
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4.
5 Electrical Connection
Assemble the housing, the
terminal block and cable
gland. Make sure that the
rib of the terminal block
and the groove on the
housing engage perfectly
until a “Click” is heard or
felt.
5.4.3 Installing the AC Connector
1.
Disconnect the AC circuit breaker and secure it against reconnection.
2.
Align the AC connector and
the AC terminal and mate
them together by hand until
a “Click” is heard or felt.
3.
Connect the other ends. Connect “PE” conductor to the grounding electrode.
Connect “L” and “N” conductors to the AC circuit breaker.
4.
Connect the AC circuit breaker to the utility grid. Pull all the lines outward to
check whether they are firmly installed.
5.5 PV Connection
Before connecting the PV array to the inverter, make sure that the
impedances between the positive terminal of the PV string and Earth, and
the impedances between the negative terminal of the PV string and Earth
are larger than 200Kohm.
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5 Electrical Connection
User Manual
There is a risk of inverter damage! The following requirements should be met;
otherwise they will lead to loss of any and all warranty rights.
 Make sure that the maximum short circuit current of each DC input is less than
inverter allowable limit.
 Make sure that the maximum open voltage of each string is less than 600V.
Voltage over 600 V can damage the inverter.
5.5.1 PV Inputs Configuration
-S Series
There is one input area with one MPP tracker. Only one input can be connected, as
shown in the following figure.
Type
Total DC Input Power
Limit
Open-circuit
Voltage Limit
Short-circuit Current
Limit
SG2KTL-S
SG3KTL-S
3000 W
4000 W
600 V
600 V
12 A
12 A
-D Series
There are two PV input areas, each with its MPP tracker. The two PV inputs can be
configured in independent mode or parallel mode.
 Independent Mode
The two PV inputs work independently, each with its own MPPT. The two PV inputs
can be different from each other in PV module types, numbers of PV panels in PV
string, tilt angles and orientation angle of PV modules.
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5 Electrical Connection
To make sure the maximum DC power, PV strings connected to
individual input area should have a homogenous structure, i.e. the
same type, identical tilt and identical orientation.
Prior to connecting the inverter to PV inputs, the specifications in the following
table should be met:
Type
Total DC Input
Power Limit
Open-circuit
Voltage Limit
(DC1/DC2)
Short-circuit
Current Limit
(DC1/DC2)
SG3KTL-D
SG5KTL-D
4000 W
6500 W
600 V/600 V
600 V/600 V
12 A/12 A
12 A/12 A
Only the current is limited for a single input and the power is not
limited.
 Parallel Mode
All PV strings should have the same type, the same number of PV panels, identical
tilt and identical orientation.
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5 Electrical Connection
User Manual
Prior to connecting the inverter to PV inputs, the specifications in the following
table should be met:
Type
Total DC Input
Power Limit
Open-circuit
Voltage Limit
Short-circuit
Current Limit
SG3KTL-D
SG5KTL-D
4000 W
6500 W
600 V
600 V
24 A
24 A
To avoid the input power unbalance of the two inputs or input
load-restriction, ensure the two PV input cables are of the same model.
5.5.2 Assembling the PV Connector
All DC cables are equipped with the water-proof direct plug-in connectors which
match the DC terminals at the bottom of the inverter.
The DC cables must be multi-stranded wires.
To ensure the protection degree IP65, only use the connectors delivered or
connectors with the same degree of protection.
The requirements of DC cables are as follows.
Cross-section
Cable Diameter
Max. Withstand
Voltage
Max. Withstand
Current
2.5...6 mm2
5…8 mm
600 V
Same with short-circuit
current
Procedure:
1.
26
Strip the insulation from the cables
by 7 mm.
2.
Assemble the cable ends by
crimping pliers.
User Manual
5 Electrical Connection
3.
Lead the cable through cable gland, and insert into the insulator until it
snaps into place. Then tighten the cable gland (torque 2.5 Nm to 3 Nm).
4.
Make sure that the cable polarities of the PV string are correct.
The inverter will not function properly if the DC polarities are reversed.
5.5.3 Installing the PV Connector
There is a risk of inverter damage! The following requirements should be met,
otherwise they will lead to loss of any and all warranty rights.
 Make sure that the maximum short circuit current of each DC input is less
than inverter allowable limit.
 Make sure that the maximum open voltage of each string is less than 600V.
Voltage over 600 V can damage the inverter.
Connect the inverter to PV array according to the following procedure.
1.
(Optional) If you purchase the DC switch, rotate it to “OFF”.
2.
Check the connection cable of the PV string for the correct polarity and that
the open-circuit voltage does not exceed the inverter input limit of 600 V,
even under the lowest operating temperature. Refer to the module
specification supplied by the module manufacturer for detailed information.
27
5 Electrical Connection
User Manual
480.0
+
-
The inverter will not function properly if the DC polarities are reversed.
Check the positive and negative polarities of the PV cells before installation.
3.
For –D series, configure PV configuration mode according to actual PV
conditions. Please refer to ”-D Series”.
4.
Plug the positive and the negative DC connectors into corresponding
terminal until there is an audible click.
* The image shown here is for reference only. The actual product you receive may
differ.
5.
28
Seal the unused DC terminals with the terminal caps.
6 Communication
6.1 Communication Terminal
The RS485 communication terminal is located at the bottom of the inverter. User
can connect a communication module or cable to the terminal.
Module/Cable
SolarInfo Wi-Fi
module
eShow
(LCD display )
ZE100
Function
Communication between the inverter and the smart phone can
be established via SolarInfo Wi-Fi. Use SolarInfo Home APP to set
the country and protection parameters according to the
permissible range of the utility grid. Refer to the User Manual of
Wi-Fi for details.
Perform the LCD operation to set the country and protection
parameters according to the permissible range of the utility grid.
Refer to eShow User Manual for details.
ZE100 mainly provides the zero export function, LCD display and
so on. Refer to the ZE100 User Manual or ZE100 Quick Installation
Guide for details.
If a RS485 cable is connected to the terminal, use a Ethernet crimper to crimp wires
and connect the wires to the RJ45 plug according to TIA/EIA 568B standard.
Pin 3 (white-green wire as RS485 B) and pin 6 (green wire as RS485 A) are used for
communication. Please do not use pins 1, 2, 4 and 5. Refer to the figure below.
This chapter mainly describes the communication between the inverter and the
smartphone/router. Refer to "10 FAQ for SolarInfo Wi-Fi Installation and
Configuration" for any problems.
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6 Communication
User Manual
6.2 Distance Requirements
6.2.1 Scenario 1: No Barriers
If there are no barriers between the inverter and the smartphone/router, the
maximum linear distance between them can be 100 m.
If the smartphone is connected to the router, the effective distance
between them depends on the technical parameters of the router and
the external environment.
Tab. 6-1 Influence to Signal Strength of Different Materials
Material
Wireless signal strength
Possible Environment
Wood
Compartment
Plaster/Asbestos
Wall
Glass
Window
Water
Aquarium, pool, fish tank
Brick wall
-
Marble
Floor
Reinforced concrete
Floor panels, wall
Metal
Iron sheet
30
User Manual
Material
6 Communication
Wireless signal strength
Cordless smartphones,
microwave ovens
Possible Environment
-
6.2.2 Scenario 2: On Different Floors
The inverter and the smartphone/router can be located in different floors of a
building, yet the floors must be adjacent.
* The image shown here is for reference only. The inverter can be installed indoors or
outdoors.
31
6 Communication
User Manual
6.2.3 Scenario 3: In Different Rooms on the Same Floor
 The Wi-Fi module cannot be blocked by metal. Keep the inverter at
the same height as the external antenna of the router.
 In order to avoid wireless electromagnetic interference, please
keep the inverter away from equipment such as cordless
smartphones, microwave ovens and so on.
 Do not install the inverter in confined environment, such as the
basement.
6.3 SolarInfo Home APP
6.3.1 Acquisition and Installation
Download the SolarInfo Home APP and install it into your smartphone. You can
select the APP version for iOS or Android.
For iPhone (iOS)
32
User Manual
6 Communication
The address for downloading SolarInfo Home APP
is
https://itunes.apple.com/us/app/solarinfo-home/i
d906260039?l=zh&ls=1&mt=8. Or scan the QR
code on the right side.
Search for SolarInfo Home in your APP Store, from which you can download it and
complete the installation.
For Android
The address for downloading
SolarInfo
Home
APP
is
https://play.google.com/store/apps/
details?id=com.sungrow.home. or
Http://www.solarinfobank.com/app
/SolarInfoHome_v1.0.apk. Or scan
the following QR codes.
33
6 Communication
User Manual
Search for SolarInfo Home in your Play Store, from which you can download it and
complete the installation.
SolarInfo Home APP supports two kinds of operation: “[Direct visit]” and
“Remote [Login]”.
 In “[Direct visit]” mode, you can connect your smartphone to the
inverter directly via Wi-Fi to check the inverter information.
 In “Remote [Login]” mode, you need configure the inverter to connect
it to your router and complete registration. Then you can log into
SolarInfo Home via the Internet to check the device running
information anywhere.
34
User Manual
6 Communication
6.3.2 Visiting Inverter via “[Direct visit]” Mode
To perform the operations in this section, be sure that the distance
between the smartphone and the inverter is within the valid range.
Checking Information
35
6 Communication
User Manual
Country Selection and Router Connection
To visit the inverter via “Remote [Login]” mode and check information
anywhere, firstly connect the inverter to home router.
36
User Manual
6 Communication
6.3.3 Visiting Inverter via “Remote [Login]” Mode
Complete the registration and you can then log into SolarInfo Home via the Internet
to view the information wherever you happen to carry the device.
Registration
37
6 Communication
User Manual
 The e-mail address will be used to receive relevant mails, so it must be
valid.
 The username will be needed to find the forgotten password. If you forget
the username, re-register.
Login
To perform the operations in this section, be sure that your phone can access the
Internet.
Be sure that you have connected the inverter to home router before login.
38
7
Commissioning
After setting the country parameter, set other parameters according to the specific
requirements of the local grid. Check thoroughly if the parameters meet the
requirements before commissioning.
7.1 Inspection before Commissioning
Check the following items before starting up the inverter:
1.
The inverter is firmly secured and the site is accessible for operation,
maintenance and service.
2.
The room for ventilation is provided and nothing is left on top of the inverter.
3.
Inverter and accessories are correctly connected. Cables are routed in a safe
place and protected against mechanical damage.
4.
The specification of the AC circuit breaker is reasonable.
5.
The terminals that are unused underneath the inverter are sealed.
6.
Warning signs and labels are suitably affixed and durable.
7.2 Commissioning Procedure
Make sure all the above mentioned items meet the requirements.
1.
Turn on the external AC circuit breaker.
2.
(Optional) Rotate the DC switch to “ON”.
3.
If there is sufficient sunlight, the inverter will enter the running state and
start to feed AC power to the grid.
4.
Observe the status of the LED indicator.
39
7 Commissioning
User Manual
Tab. 7-1 Indicator Stage Description
State
Green&
Red
Green(1)
Red(2)
Description
Flash once in turn every 1 s.
Flash once every 0.2-2 s.
The higher the inverter power,
the faster the flash.
Flash once after every 2 s.
Flash twice after every 2 s.
Flash 3 times after every 2 s.
Flash 4 times after every 2 s.
Flash 5 times after every 2 s.
Flash continuously.
Non-running or Non-fault.
(e.g., standby)
Inverter is running normally.
Earth fault (3)
Grid side fault
ISO fault
Relay fault
Leakage
current
self-detection fault
Other faults
sensor
(1) The flashing period of the green light is inversely proportional to the power
production of the inverter.
(2) The flashing duration of the red light is 0.3 s.
(3) The earth fault buzzer will beep when the eShow module is connected.
The LED indicator will be red and green at the same time when the
inverter is in its upgrading process. If in other status, please contact
SUNGROW Service Dept. for troubleshooting.
40
8 System Decommissioning
8.1 Disconnecting the Inverter
For maintenance or other service work, the inverter must be switched off.
Proceed as follows to disconnect the inverter from the AC and DC power sources.
Lethal voltages or damage to the inverter will follow if otherwise.
1.
Disconnect the AC circuit breaker and secure it against reconnection.
2.
Rotate DC switch to “OFF”. Disconnect the external DC circuit breaker.
Please strictly follow the sequence of the above procedures. Inverter will
not work normally if otherwise.
3.
Wait about 10 minutes until the capacitors inside the inverter completely
discharge.
4.
Measure to confirm that the AC output at the AC circuit breaker is voltage
free.
5.
Remove the AC connector. Lay the tool in the location of snap and press the
tool down. Then snap can be pushed from the AC terminal.
6.
Release the locking part of DC connectors by pressing on the ribbing of the
locking hooks with nipper pliers and pull it outwards.
For further disconnection and conductor reconnection instruction,
please visit the webpage of device manufacturer.
41
8 System Decommissioning
User Manual
8.2 Dismantling the Inverter
Risk of burn injuries and electric shock!
Do not touch any inner live parts until at least 10 minutes after
disconnecting the inverter from the utility grid and the PV input.
1.
Refer to Chapter 5 for the inverter disconnection of all cables in reverse
steps.
2.
Dismantle the inverter referring to Chapter 4 in reverse steps.
3.
If necessary, remove the wall-mounting bracket from the wall.
4.
If the inverter will be reinstalled in the future, please refer to “3 Unpacking
and Storage” for a proper conservation.
8.3 Disposing of the Inverter
Users should take the responsibility for the disposal of the inverter.
Some parts and devices of the inverter, such as, LED indicators, batteries,
capacitors, may cause environment pollution.
Disposal of the inverter must comply with the related local regulations to
avoid the potential pollution.
42
9 Troubleshooting and
Maintenance
9.1 Troubleshooting
9.1.1 For LED Indicator
See “Tab. 7-1Indicator Stage Description” for the definition of LED’s status.
Fault Type
LED
indicator
cannot be lit.
Green indicator
goes out.
Troubleshooting
1. Disconnect the AC circuit breaker.
2. Rotate the optional DC switch to “OFF”.
3. Check the polarity of DC input.
1. Disconnect the AC circuit breaker.
2. Rotate the optional DC switch to “OFF”.
3. Check the inverter electrical connection. Refer to “5 Electrical
Connection”.
4. Check whether the voltage of DC input exceeds the inverter
start-up voltage.
5. If all the above conditions are OK, please contact SUNGROW.
Should you have any questions in operating the inverter, please contact
us:
Telephone: +86 551 6532 7817.
Email: service@sungrow.cn
We need the following information to provide you the best assistance:
 Type of the inverter
 Serial number of the inverter
 Fault name (Each fault has a corresponding fault code, for example, 01 represents
sampling fault.)
 Brief description of the fault phenomenon
43
9 Troubleshooting and Maintenance
User Manual
9.1.2 For the Faults on the APP or Screen
If the Wi-Fi module or ZE100 (integrated with Wi-Fi function) is equipped, a fault icon
will be shown in the APP once a fault occurs. For details, see the related munals.
If the LCD module eShow is equipped, the “Fault” state will display on the main
screen. For details, see eShow User Manual. Follow the procedure below for
troubleshooting when the data on the main screen cannot update in real time.
1.
Disconnect the external AC circuit breaker.
2.
Disconnect the external DC circuit breaker or pull off the DC connectors.
3.
Reconnect the breakers or connectors and restart the inverter.
4.
If the fault still exists, check whether the communication cable of eShow is
firmly connected
5.
If the communication cable is firmly connected, contact Sungrow Service
Dept.
Fault
Code
Description
002
The
grid
voltage
exceeds
inverter
allowable upper limit.
003
Grid transient voltage
exceeds the permissible
range
004
The grid voltage is
below
inverter’s
allowable lower limit.
005
The grid voltage is too
low.
006
The AC output current
exceeds
inverter
allowable upper limit.
44
Troubleshooting
1. Check the voltage of the grid.
2. If the grid voltage exceeds the permissible
range of inverter protection parameters, ask
utility grid company for solution.
3. If the grid voltage is within the permissible
range, contact Sungrow Service Dept.
1. This is a short-term fault due to grid
condition. Wait a moment for inverter
recovery.
2. If the fault still exists, please contact
Sungrow Service Dept.
1. Check the grid voltage.
2. If the grid voltage exceeds the permissible
range of inverter protection parameters, ask
utility grid company for solution.
3. If the grid voltage is within the permissible
range, contact Sungrow Service Dept.
1. This is a short-term fault due to grid
condition. Wait a moment for inverter
recovery.
2. If the fault still exists, please contact
Sungrow Service Dept.
1. The inverter will resume if the output
current falls below the protection value.
2. If the fault still exists, please contact
Sungrow Service Dept.
User Manual
9 Troubleshooting and Maintenance
Fault
Code
Description
007
Transient
overcurrent
008
The grid frequency
exceeds
inverter
allowable upper limit.
009
The grid frequency is
below
the
inverter
allowable lower limit.
010
Islanding
011
The DC component of
AC current exceeds
inverter limit.
012
A failure
detected.
014
The
average
grid
voltage exceeds the
permissible range for
over 10 minutes.
015
The
grid
voltage
exceeds the permissible
range
016
The bus voltage
power is high.
Troubleshooting
AC
current
is
or
1. The inverter will self-recover after several
seconds.
2. If the fault still exists, please contact
Sungrow Service Dept.
1. Check the grid frequency.
2. If the grid frequency exceeds the
permissible range of inverter protection
parameters, ask utility grid company for
solution.
3. If the grid frequency is within the
permissible range, contact Sungrow Service
Dept.
1. Check whether AC circuit breaker is
triggered.
2. Check whether AC cables are all firmly
connected.
3. Check whether grid is not in service.
4. If all conditions are OK and this fault still
occurs in the LCD screen, contact Sungrow
Service Dept.
1. Wait a moment for inverter recovery.
2. If the fault occurs repeatedly, contact
Sungrow Service Dept.
1. Check the PV strings for ground fault.
2. If the fault occurs repeatedly, contact
Sungrow Service Dept.
1. Check whether the inverter selected
country code is the country you are in.
2. Wait a moment for inverter recovery.
3. Check the voltage of the grid. If the grid
voltage exceeds the permissible range of
inverter protection parameters, ask utility grid
company for solution.
4. If the fault occurs repeatedly, contact
Sungrow Service Dept.
1. Check the model of the AC cables.
2. Wait a moment for inverter recovery.
3. If the grid voltage exceeds the permissible
range, ask utility grid company for solution.
4. If the fault occurs repeatedly, contact
Sungrow Service Dept.
1. Wait a moment for inverter recovery.
2. If the fault occurs repeatedly, contact
Sungrow Service Dept.
45
9 Troubleshooting and Maintenance
User Manual
Fault
Code
Description
019
The
transient
voltage is high.
020
The bus voltage is high.
021
022
028
029
036
Troubleshooting
bus
PV1 input overcurrent is
detected
PV2 input overcurrent is
detected
PV1 reverse connection
fault
PV2 reverse connection
fault
The temperature of
radiator is too high
037
The
internal
temperature of inverter
is too high
038
Relay fault is detected
039
The insulation resistance
is low. (ISO-flt)
041
Leakage current self-test
abnormality
043
044
46
Ambient temperature is
too low, below -30 ℃
Open-loop
self-test fault
inverter
1. Wait a moment for inverter recovery.
2. If the fault occurs repeatedly, contact
Sungrow Service Dept.
1. Wait a moment for inverter recovery.
2. If the fault occurs repeatedly, contact
Sungrow Service Dept.
Check the layout and the wiring of PV1 input.
Check the layout and the wiring of PV2 input.
Check the cable connections of PV1.
Check the cable connections of PV2.
1. Check whether the ambient temperature
shown on the screen is too high. Wait a
moment for inverter recovery.
2. Check whether there is enough space for
convection.
3. Check whether the inverter is in direct
sunlight.
4. Check whether the fan is normal. Replace it
if necessary.
5. Clean the air inlets.
6. If the fault still exists, please contact
Sungrow.
1. Wait a moment for inverter recovery.
2. If the fault occurs repeatedly, contact
Sungrow Service Dept.
1. Check whether there is a reliable inverter
grounding line.
2. Check whether the positive and negative of
PV panels is short-circuited with ground lead.
3. Wait a moment for inverter recovery.
4. If the fault occurs repeatedly, contact
Sungrow Service Dept.
1. Wait a moment for inverter recovery.
2. If the fault occurs repeatedly, contact
Sungrow Service Dept.
Shut down and disconnect the inverter.
Wait until the ambient temperature rises to
the permissible range and restart the inverter.
1. Wait a moment for inverter recovery.
2. If the fault occurs repeatedly, contact
User Manual
Fault
Code
9 Troubleshooting and Maintenance
Description
Troubleshooting
Faults detected in PV1
Sungrow Service Dept.
045
boosted circuit
Faults detected in
046
048
PV2 boosted circuit
Sampling
channel
failure
053
Auxiliary DSP detects
grid voltage exceeds set
protection value
054
Auxiliary DSP detects
grid frequency exceeds
set protection value
056
Auxiliary DSP detects
leakage current exceeds
set protectino range
061
Alarm for no inverter
type setting
070
Fans are defective
074
Communication fault of
LCD
100
The AC output current
exceeds
inverter
protection limit.
1. Check the grid voltage.
2. If the grid voltage exceeds the permissible
range of inverter protection parameters, ask
utility grid company for solution.
3. If the grid voltage is within the permissible
range, contact Sungrow Service Dept.
1. Check the grid frequency.
2. If the grid frequency exceeds the
permissible range of inverter protection
parameters, ask utility grid company for
solution.
3. If the grid frequency is within the
permissible range, contact Sungrow Service
Dept.
1. Check whether there is a grounded fault of
the PV string.
2. If the fault occurs repeatedly, contact
Sungrow Service Dept.
Contact Sungrow Service Dept.
Stop the inverter and disconnect the AC & DC
cables. Check whether the fan duct has been
blocked. If not, replace fans.
1. Check whether communication cable of the
Eshow is firmly connected.
2. If the communication cable is firmly
connected, a fault has occurred in the internal
communication of the inverter. However, the
inverter continues feeding into the grid.
3. Contact Sungrow Service Dept.
1. The inverter will resume if the output
current falls below the protection value.
2. If the fault still exists, please contact
Sungrow Service Dept.
47
9 Troubleshooting and Maintenance
User Manual
Fault
Code
Description
Troubleshooting
106
The inverter is not
grounded.
Neither the PE terminal
on the AC connection
block nor the second PE
terminal
on
the
enclosure is reliably
connected.
Check whether there is a reliable inverter
grounding line, if there is access to the
ground, and the fault still exists, please
contact Sungrow Service Dept.
200
The bus voltage is high.
201
The bus voltage is too
low.
202
203
205
306
315
316
409
503506
48
PV current exceeds the
set
value
of
the
hardware.
DC voltage sampling
anomaly.
AC
output
abnormal
relay
Input and output power
mismatching fault
PV1 current sampling
channel fault
PV2 current sampling
channel fault
Ambient temperature
sensor fault and radiator
temperature sensor fault
Temperature
sensor
warnings
1. Wait for inverter recovery after bus voltage
lower.
2. If the fault occurs repeatedly, contact
Sungrow Service Dept.
1. Wait a moment for inverter recovery.
2. If the fault occurs repeatedly, contact
Sungrow Service Dept.
If the fault occurs
Sungrow Service Dept.
repeatedly,
contact
Check the functionality of the PV connection
terminals.
1. Wait a moment for inverter recovery.
2. If the fault occurs repeatedly, contact
Sungrow Service Dept.
If the fault occurs repeatedly, contact
Sungrow Service Dept.
Channel sampling anomaly.
Contact Sungrow Service Dept.
If the fault occurs
Sungrow Service Dept.
repeatedly,
contact
User Manual
9 Troubleshooting and Maintenance
9.2 Routine Maintenance
Risk of inverter damage or personal injury due to incorrect service!
Always keep in mind that the inverter is powered by dual sources: PV array
and utility grid.
Before any service work, observe the following procedure.
 Disconnect the inverter from the utility grid side first and then PV array;
 Wait at least 10 minutes for inner capacitors to discharge completely;
 Verify that no voltage and current existing with appropriate testing
devices.
Keep non-related persons away!
A temporary warning sign or barrier must be posted to keep non-related
persons away while performing electrical connection and service work.
Risk of inverter damage if it is improperly serviced.
Use accessories and spare parts approved by the inverter manufacturer
only. Never modify the inverter or other components of the inverter. The
loss of any or all warranty rights may follow if otherwise.
Any malfunction that may impair the inverter safety operation must be
repaired immediately before the inverter is restarted.
Inverter contains no customer serviceable parts inside. Please contact local
authorized personnel if any service work is required.
49
9 Troubleshooting and Maintenance
User Manual
Servicing of the device in accordance with the manual should never be
undertaken in the absence of proper tools, test equipments or the more
recent revision of the manual which has been clearly and thoroughly
understood.
Items
Methods
Period
System
clean
Check the temperature and dust of the
inverter. Clean the inverter enclosure.
Check the humidity and dust of the
environment. Meanwhile check whether the
filter function of the air inlet is ok.
Six months to a year (it
depends on the dust
contents in air.)
50
10 FAQs for SolarInfo Wi-Fi
10.1
Cannot Find Wi-Fi Signal of Inverter
If the smart phone cannot find the Wi-Fi signal of inverter after installation, please
follow the procedures below for the solutions.
1.
Check and ensure that the inverter has been powered on.
2.
Check and ensure that the Wi-Fi module has been firmly installed to the
corresponding terminal.
3.
Your smart phone should not be too far away from the Wi-Fi module. Move
them closer to check if the search can be successful.
4.
If all the above-mentioned items are ok, yet this problem still exists, it can be
verified that the Wi-Fi module has been damaged. Please submit a warranty
claim to SUNGROW for replacement.
10.2
Too Weak Wi-Fi Signal of Inverter
The Wi-Fi signal strength of inverter is too weak (less than one). Please follow the
procedures below for the solutions.
1.
Check and ensure that the distance between the inverter bottom and the
floor is at least 800 mm.
2.
Check and ensure that the Wi-Fi module has been firmly installed to the
terminal.
3.
Make sure the device is at least 400 mm from the wall.
4.
Make sure the device is parallel to the external antenna of the Router.
5.
Check and ensure that the Wi-Fi module is not covered by any metal
materials.
Tab. 10-1 Influence to signal strength of different materials or devices
Material
Wireless signal strength
Possible Environment
Wood
Compartment
Plaster\Asbestos
Wall
51
10 FAQs for SolarInfo Wi-Fi
Material
User Manual
Wireless signal strength
Possible Environment
Glass
Window
Water
Aquarium, pool, fish tank
Brick wall
-
Marble
Floor
Reinforced
concrete
Floor panels, wall
Metal
Iron sheet
cordless
smartphones,
microwave ovens
-
6.
Check and ensure that the installation of inverter and Wi-Fi module has met
the requirements, as shown in the following figure.
Fig. 10-1 Installation Requirements of Inverter and Wi-Fi module
52
User Manual
10.3
10 FAQs for SolarInfo Wi-Fi
Cannot Find Wi-Fi Network of Router
If you cannot find the assigned router in the router list, please follow the procedures
below for the solutions.
1.
Click the icon on the phone screen to refresh the router list, as shown in the
following figure.
Fig. 10-2 Refreshing the Router List
2.
The distance between the router and Wi-Fi module should not be too far.
Ensure that there are no metal materials between them.
3.
Check and ensure that the router’s SSID (Service Set Identifier, hereinafter
“SSID”) is not named starting with “SG-”.
4.
Check and ensure that there are no advanced settings of the assigned router.
If you are not sure about any advanced settings, you can reset the
router to factory settings.
− The settings of “GUEST WIRELESS SETTINGS” may hide the Router SSID and the
Router may not be searched.
53
10 FAQs for SolarInfo Wi-Fi
User Manual
Fig. 10-3 Right Setting (Visible)
− Check the setting of router’s max. rate. The Wi-Fi network of router may not be
searched when the max. rate is set to 300 Mbps.
10.4
Cannot Connect to Wi-Fi Network of Router
The signal strength and other items meet requirements, but the Wi-Fi module of the
inverter cannot connect to the Wi-Fi network of the router. Please follow the
procedures below for the solutions.
1.
Make sure that the router password is correct. Note if there are capital and
small letters.
2.
If user has changed router SSID or visiting password, please re-connect the
inverter Wi-Fi to the Wi-Fi network of the router.
3.
The distance between the router and Wi-Fi module should not be too far. Try
to move the router closer to the Wi-Fi module and ensure that the distance is
within the valid range.
4.
Check if the Wi-Fi signal of inverter is too weak. For the solutions, see “10.2
Too Weak Wi-Fi Signal of Inverter”.
5.
Check and ensure that there are no special characters in router’s SSID,
including “+”, “/”, “?”, “%”, “#”, “&” , “=” and “null”.
6.
If there is more than one router, their SSIDs should be different. Change the
SSIDs if they are the same with each other.
7.
Check and ensure that there are no advanced settings of the assigned router.
MAC address filtering, IP range limitation, access number limitation,
SSID limitation, DHCP disable may cause connection failure. If you are
not sure about any advanced settings, you can reset the router to
factory settings.
54
User Manual
10 FAQs for SolarInfo Wi-Fi
− “Wireless filter policy” is to set which devices are allowed to be connected to
the Router. Do not set this parameter. You may not able to connect to the
Router if otherwise.
− Check and ensure that the “Enable DHCP Server” is ticked. Set the “DHCP IP
Address Range” as wide as possible, otherwise the accessed user numbers
may decrease and the Wi-Fi module of the inverter cannot connect to the
Wi-Fi network of the router.
Fig. 10-4 DHCP Server Settings
55
10 FAQs for SolarInfo Wi-Fi
User Manual
10.5
Transmission Signal Strength of Different
Materials
The following table shows the wireless signal strength of different transmission
materials.
Make sure that there are not materials with poor transmission signal strength
between the smart phone and inverter, and the router and the inverter.
See “Tab. 6-1 Influence to Signal” for the transmission signal strength of different
materials.
10.6
Cannot Find Running Data on Server
Although the inverter Wi-Fi is successfully connected to Wi-Fi network of the router,
and user has registered to be a user of SolarInfo Bank server, no inverter running
data can be viewed.
1.
Check and ensure that the router can successfully access to Internet.
2.
Check if the firewall is open. Close the Router firewall
3.
Check if there is advanced Router configuration. Cancel any advanced
configurations.
The advanced settings include MAC address filtering, IP range
limitation, access number limitation, SSID limitation, DHCP disable,
hidden of the Router SSID and so on. If you are not sure about any
advanced settings, you can reset the router to factory settings.
4.
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If user has registered via www.solarinfobank.com but try to view the running
data via the SolarInfo Home APP, the user type should be “Home Users”.
Otherwise you will fail to login the APP and cannot view any information.
11 Appendix
11.1
Technical Data
Parameters
Input Side Data
SG2KTL-S
SG3KTL-S
SG3KTL-D
SG5KTL-D
Max. PV input power
Max. PV input voltage
Startup voltage
Nominal input voltage
MPP voltage range
MPP voltage range for
nominal power
No. of MPPTs
Max. number of PV
strings per MPPT
Max. PV input current
(DC1/DC2)
Max. current for input
connector
Short-circuit current of
PV input (DC1/DC2)
3000W
600 V
120 V
360 V
110…560 V
4000 W
4000 W
6500W
210…480 V
310…480 V
150…480 V
260…480 V
1
2
1
1
10 A
20 A (10 A/10 A)
12 A
24 A (12 A/12 A)
12 A
24 A (12 A/12 A)
Output Side Data
Nominal
power
AC
output
5000 W/
4990 W *
(cosΦ=1)
5000 VA/
4990 VA *
21.7 A/
22.7 A *
2000 W
3000 W
3000 W
Max.
AC
output
apparent power
2000 VA
3000 VA
3000 VA
Max. AC output current
9.1 A
13.6 A
13.6 A
Nominal AC voltage
220 Vac/230 Vac (Single phase)
180…276 Vac
(May vary as per corresponding country’s grid standard)
50 Hz/60 Hz
45…55 Hz/55...65 Hz
(May vary as per corresponding country’s grid standard)
<3% (Nominal power)
<0.5% In
>0.99 @ default value at nominal power
(adj. 0.8 over-excited~0.8 under-excited)
AC voltage range
Nominal grid frequency
Grid frequency range
THD
DC current injection
Power factor
57
11 Appendix
User Manual
Parameters
Protection
SG2KTL-S
SG3KTL-S
SG3KTL-D
SG5KTL-D
Anti-islanding
protection
AC
short
circuit
protection
Leakage
current
protection
LVRT
DC reverse connection
protection
DC switch
DC fuse
Overvoltage protection
Yes
97.4%
97.5%
97.4%
97.5%
96.6%
97.0%
96.9%
97.1%
Yes
Yes
No
No
Optional
No
Varistors
System Data
Max. efficiency
Max.
European
efficiency
Isolation method
Ingress
protection
rating
Night
power
consumption
Operating
ambient
temperature range
Allowable
relative
humidity range
Cooling method
Max. operating altitude
Display
Transformerless
IP65
<1 W
-25℃…+60℃ (>45℃ derating)
0…100%
Natural cooling
2000 m
LED indicator,
LCD (optional, see communication options below)
Optional:
 eShow (LCD)
 eShow+ (LCD + Wi-Fi)
Communication
 ZE100 (LCD + Wi-Fi + energy meter for zero-export)
 GPRS (for China & Europe)
DC Terminals
AC Terminals
Certification
58
Remark:
Built-in earth fault alarm on eShow, eShow+ and ZE100.
MC4
Plug and play connector
IEC61000-6-2, IEC61000-6-3, AS/NZS3100, AS4777.2,
AS4777.3, IEC62109-1, IEC62109-2, VDE-AR-N-4105,
VDE0126-1-1, G59/3, G83/2, C10/11, EN50438, NB/T
User Manual
11 Appendix
Parameters
SG2KTL-S
SG3KTL-S
SG3KTL-D
SG5KTL-D
32004,GB/T29319, KS C8564:2015; CE, CGC, TUV, SAA, KTC
Mechanical Data
Dimensions (W x H x D)
Mounting method
Weight
300 mm x 370 mm x 125
mm
Wall-mounting bracket
9 kg
360 mm x 390 mm x 133
mm
11 kg
* When the country code of SG5KTL-D is set to “AU” (Australia), the nominal output
power is 4990 W (VA) and the max. output current is 21.7 A (230 Vac).
11.2
Exclusion of Liability
The content of these documents is periodically checked and revised where
necessary. Discrepancies therefore may exist. Readers are cautioned that SUNGROW
reserves the right to make changes without notice. Please call us or visit our website
at www.sungrowpower.com for the latest information. No guarantee is made for the
completeness of these documents. Please contact our company or distributors to
get the latest version.
Guarantee or liability claims for damage of any kind are excluded if they are caused
by one or more of the following:
 improper or inappropriate use or install of the product;
 installing or operate the product in unintended environment;
 installing or operate the product without observing relevant safety regulations in
the deployment location;
 ignoring the safety warnings or instructions contained in all documents relevant
to the product;
 installing or operate the product under incorrect safety or protection conditions;
 altering the product or supplied software without authority;
 the product faults due to operation attached or neighboring devices beyond of
allowed limit values; and
 damage caused by the natural environment beyond the rated operating range of
the inverter.
59
11 Appendix
User Manual
The use of supplied software produced by SUNGROW is subject to the following
conditions:
 SUNGROW rejects any liability for direct or indirect damages arising from the use
of SolarInfo software. This also applies to the provision or non-provision of
support activities.
 Using the SolarInfo software for commercial purposes is prohibited.
 Decompiling, decoding or destroying the original program, including SolarInfo
software and the embedded software, is prohibited.
11.3
About Us
SUNGROW is a China-leading manufacturer of various power electronics products
for renewable energy generation systems, supplying to a global customer base. Our
products include converters, inverters, battery chargers and other power supplies
for distributable generation systems in both grid-connected and stand-alone
applications. The power rating of SUNGROW products covers from several hundred
watt to large mega-watt systems.
The vision of Sungrow is to help our customers acquire stable and clean power with
minimum cost, maximum reliability and enhanced safety.
Contact Information
Should you have any problems, please contact us through the following information.
We will be more than happy to assist you!
Company:
Website:
Email:
Add:
Post Zip:
Service line:
Sungrow Power Supply Co., Ltd.
www.sungrowpower.com
service@sungrowpower.com(China), service@sungrow.cn(Overseas)
No.1699 Xiyou Rd., New & High Technology Industrial Development
Zone, Hefei, P. R. China.
230088
400 880 5578 (China), +86 551 65327834 (Overseas)
Fax:
+86 551 65323478
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