Sungrow SG2K-S User manual

SG2_3_4_5_6_8.3K-UEN-Ver14 Version：1.4
User Manual
SG2K-S / SG3K-S / SG3K-D /
SG4K-D / SG5K-D / SG6K-D /
SG8K3-D
PV Grid-Connected Inverter

I
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 respective
component manufacturer.
Applicability
This manual is applicable to the following inverter types:
SG2K-S
SG3K-S
SG3K-D
SG4K-D
SG5K-D
SG6K-D
SG8K3-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.

II
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.
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.

III
Contents
About This Manual.....................................................................I
1Safety....................................................................................1
1.1 General Safety..........................................................................1
1.2 Inverter......................................................................................2
1.3 Skills of Qualified Personnel......................................................3
2Product Introduction...........................................................4
2.1 Intended Use.............................................................................4
2.2 Inverter......................................................................................5
2.3 Energy Meter (Optional)............................................................8
2.4 Function Description..................................................................9
2.4.1 Basic Function...........................................................................9
2.4.2 Reactive Power Regulation.....................................................10
2.4.3 Regular Operational Voltage Range........................................ 11
2.4.4 Regular Operational Frequency Range...................................12
3Unpacking and Storage....................................................15
3.1 Unpacking and Inspection.......................................................15
3.2 Identifying the Inverter.............................................................16
3.3 Delivery Contents....................................................................17
3.4 Storage of Inverter...................................................................18
4Mechanical Mounting........................................................19
4.1 Safety during Mounting ...........................................................19
4.2 Location Requirements ...........................................................19
4.3 Tools........................................................................................21
4.4 Installing the Inverter...............................................................23
4.5 Installing the Energy Meter......................................................25
5Electrical Connection .......................................................26
5.1 Terminal Description................................................................27
5.2 Grounding the Inverter ............................................................28

IV
5.3 Grid Connection.......................................................................29
5.3.1 AC Side Requirements............................................................ 29
5.3.2 Assembling the AC Connector................................................. 30
5.3.3 Installing the AC Connector..................................................... 31
5.4 PV Connection.........................................................................32
5.4.1 PV Input Configuration............................................................ 32
5.4.2 Assembling the PV Connector................................................. 35
5.4.3 Installing the PV Connector..................................................... 36
5.5 RS485 Communication Connection.........................................37
5.6 (Optional) Meter Communication Connection..........................38
5.6.1 On the Meter Side................................................................... 38
5.6.2 On the Inverter Side................................................................ 40
6Commissioning .................................................................42
6.1 Inspection before Commissioning............................................42
6.2 Button Function........................................................................42
6.3 Commissioning Procedure.......................................................43
7LCD Operation...................................................................44
7.1 Button Function........................................................................44
7.2 Main Screen.............................................................................44
7.3 Menu Structure........................................................................46
7.4 Viewing Running Info...............................................................47
7.5 Advanced Settings...................................................................47
7.5.1 Inputting the Password............................................................ 47
7.5.2 Setting Protective Parameters................................................. 48
7.5.3 Zero-export Setting ................................................................. 50
7.5.4 Adding the Existing Inverter..................................................... 51
7.5.5 PF Setting ............................................................................... 51
7.5.6 Parameter Reset..................................................................... 51
7.5.7 Energy Adjustment.................................................................. 51
7.5.8 Setting Communication Parameter.......................................... 52
7.5.9 Ethernet Configuration ............................................................ 52
7.6 Starting/Stopping the Inverter..................................................52

V
7.7 Viewing the Error Record........................................................53
7.8 Setting the Time ......................................................................53
7.9 Setting the Country..................................................................53
7.10 Viewing Device Info.................................................................54
8Troubleshooting and Maintenance..................................55
8.1 Troubleshooting.......................................................................55
8.1.1 LED Indicator ..........................................................................55
8.1.2 Errors on the App or LCD Screen............................................55
8.2 Routine Maintenance ..............................................................61
9System Decommissioning ...............................................63
9.1 Disconnecting the Inverter.......................................................63
9.2 Dismantling the Inverter ..........................................................64
9.3 Disposing of the Inverter .........................................................64
10 Appendix............................................................................65
10.1 Technical Data.........................................................................65
10.1.1 –S Series...............................................................................65
10.1.2 –D Series ..............................................................................66
10.2 Quality Assurance ...................................................................71

1
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 property safety of 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 strings.
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.

1 Safety User Manual
2
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. Unauthorized opening will void
guarantee and warranty claims and in most cases terminate the operating
license.
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.
All the warning labels and nameplate on the inverter body:
must be clearly visible; and