Sungrow SH5K-20 User manual

User Manual
1-Phase Hybrid Inverter
SH5K-20
SH5K-20-UEN-Ver19-202007WWW.SUNGROWPOWER.COM

I
All Rights Reserved
No part of this document can be reproduced in any form or by any means
without the prior written permission of Sungrow Power Supply Co., Ltd
(hereinafter “SUNGROW”).
Trademarks
and other Sungrow trademarks used in this manual are
owned by Sungrow Power Supply Co., Ltd.
All other trademarks or registered trademarks mentioned in this document are
owned by their respective owners.
Software Licenses
It is prohibited to use data contained in firmware or software developed by
SUNGROW, in part or in full, for commercial purposes by any means.
It is prohibited to perform reverse engineering, cracking, or any other operations
that compromise the original program design of the software developed by
SUNGROW.
Sungrow Power Supply Co., Ltd.
Address: No.1699 Xiyou Rd., New & High Tech Zone, Hefei, 230088, China.
Email: [e-mail]
Tel: [phone]
Website: www.sungrowpower.com

II
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. The reader can get additional information
about other devices at www.sungrowpower.com or on the webpage of the
respective component manufacturer.
Validity
This manual is valid for the inverter model SH5K-20.
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 via the
LCD display.
How to Use the 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.
Content 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 en.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.

III
Symbol
Explanation
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.

IV
Contents
About This Manual....................................................................II
1Safety....................................................................................1
1.1 PV Panels..................................................................................1
1.2 Utility Grid..................................................................................1
1.3 Inverter.......................................................................................2
1.4 Battery .......................................................................................4
1.5 Skills of Qualified Personnel......................................................5
2System Solution..................................................................6
2.1 Product Introduction...................................................................6
2.1.1 Inverter...................................................................................... 6
2.1.2 Energy Meter............................................................................. 8
2.2 On-grid System..........................................................................9
2.3 Off-grid System........................................................................12
2.4 Retrofitting the Existing PV System.........................................14
3Function Description........................................................15
3.1 Safety Function........................................................................15
3.1.1 Protection................................................................................ 15
3.1.2 Earth Fault Alarm .................................................................... 15
3.2 Energy Conversion and Management......................................15
3.2.1 Power Derating ....................................................................... 16
3.2.2 External Demand Response ................................................... 17
3.2.3 Reactive Power Regulation..................................................... 18
3.2.4 Active Power Response .......................................................... 18
3.2.5 Load Control ........................................................................... 19
3.3 Battery Management................................................................19
3.3.2 Charge Management .............................................................. 20
3.3.3 Discharge Management.......................................................... 22
3.3.4 Maintenance Management...................................................... 22
3.3.5 Battery Temperature Sensor (PT1000).................................... 23

V
3.4 Communication and Configuration..........................................23
4Unpacking and Storage....................................................24
4.1 Unpacking and Inspection....................................................... 24
4.2 Scope of Delivery....................................................................25
4.3 Inverter Storage.......................................................................26
5Mechanical Mounting........................................................27
5.1 Safety during Mounting ........................................................... 27
5.2 Location Requirements ...........................................................27
5.2.1 Installation Environment Requirements...................................28
5.2.2 Carrier Requirements..............................................................28
5.2.3 Installation Angle Requirements..............................................28
5.2.4 Installation Clearance Requirements.......................................29
5.3 Installation Tools......................................................................29
5.4 Moving the Inverter..................................................................31
5.5 Installing the Inverter...............................................................31
5.6 Installing the Energy Meter......................................................33
6Electrical Connection .......................................................34
6.1 Safety Instructions...................................................................34
6.2 Terminal Description................................................................35
6.3 Additional Grounding Connection............................................37
6.3.1 Additional Grounding Requirements........................................37
6.3.2 Connection Procedure.............................................................37
6.4 AC Cable Connection..............................................................39
6.4.1 AC Side Requirements............................................................39
6.4.2 Assembling the AC Connector.................................................39
6.4.3 Installing the AC Connector.....................................................40
6.5 DC Cable Connection..............................................................41
6.5.1 PV Input Configuration ............................................................41
6.5.2 Assembling the PV Connector.................................................43
6.5.3 Installing the PV Connector.....................................................44
6.6 Communication Connection....................................................46
6.6.2 Ethernet Connection................................................................47

VI
6.6.3 WiFi Connection...................................................................... 48
6.7 Meter Connection.....................................................................49
6.8 Battery Connection ..................................................................50
6.8.1 Connecting the Power Cable................................................... 51
6.8.2 Connecting the CAN Cable..................................................... 52
6.8.3 Connecting the Temperature Sensor....................................... 53
6.9 STB5K-20 Connection (EPS)...................................................54
6.9.1 Connecting the Power Cables................................................. 55
6.9.2 Connecting the Control Cable and DI Cable............................ 55
6.10 DO Connection........................................................................57
7Commissioning .................................................................60
7.1 Inspection before Commissioning............................................60
7.2 Button Introduction...................................................................60
7.3 Powering on the System..........................................................61
7.4 LCD Initial Settings ..................................................................62
7.5 Result Verification....................................................................66
8System Decommissioning...............................................67
8.1 Decommissioning the Inverter .................................................67
8.1.1 Disconnecting the Inverter....................................................... 67
8.1.2 Dismantling the Inverter .......................................................... 68
8.1.3 Disposing of the Inverter ......................................................... 68
8.2 Decommissioning the Battery..................................................68
8.2.1 Disconnecting Li-ion Battery.................................................... 68
8.2.2 Disconnecting Lead-acid Battery............................................. 69
9Troubleshooting and Maintenance..................................70
9.1 Troubleshooting.......................................................................70
9.1.1 Troubleshooting of LED Indicators .......................................... 70
9.1.2 Troubleshooting of the Errors.................................................. 70
9.2 Maintenance ............................................................................71
9.2.1 Routine Maintenance .............................................................. 72
9.2.2 Replacing the Button Battery................................................... 72
10 Appendix I: LCD Operation..............................................73

VII
10.1 Main Screen............................................................................73
10.2 LCD Menu...............................................................................74
10.3 Starting and Stopping the Inverter...........................................76
10.4 Advanced Settings ..................................................................76
10.4.1 Inputting Password................................................................76
10.4.2 Setting the EPS Function ......................................................77
10.4.3 Adding the Existing System...................................................78
10.4.4 Setting the Battery Type ........................................................78
10.4.5 Setting the Battery Usage Time.............................................79
10.4.6 Setting Forced Charge ..........................................................79
10.4.7 Setting the Protective Parameters.........................................79
10.4.8 Setting Reactive Power Regulation ....................................... 81
10.4.9 Setting Active Power Response.............................................81
10.4.10 Setting Limit Power Ramp...................................................81
10.4.11 Setting Load Control............................................................81
10.4.12 Setting the Communication Parameters ..............................83
10.4.13 Testing Earth Fault...............................................................84
10.4.14 DRM Switch Setting ............................................................84
10.4.15 PT1000 Switch Setting........................................................84
10.4.16 Factory Reset......................................................................84
10.5 Setting the Time ......................................................................84
10.6 Setting the Country..................................................................85
10.7 Viewing the Error Codes .........................................................86
11 Appendix II: Visiting and Configuring the Webserver...88
11.1 User and Authority...................................................................88
11.2 Main Interface..........................................................................89
11.3 Navigation Introduction............................................................89
12 Appendix III: AS/NZS 4777 Compliant.............................91
12.1 Demand Response Modes......................................................91
12.1.1 Connecting the inverter to a DRED .......................................91
12.1.2 Viewing the DRM State via LCD Menu..................................92
12.2 Reactive Power Regulation.....................................................93
12.2.1 “Qt” Mode..............................................................................93

VIII
12.2.2 “Q(P)” Mode.......................................................................... 93
12.2.3 “Q(U)” Mode.......................................................................... 94
12.3 Active Power Response...........................................................95
12.3.1 Volt-watt Response ............................................................... 95
12.3.2 Volt-watt Response for Battery Charging............................... 96
12.3.3 Frq-Watt Response............................................................... 98
13 Appendix IV: Technical Data..........................................100
13.1 Inverter...................................................................................100
13.2 STB5K-20 (backup box).........................................................102
13.3 Energy Meter .........................................................................102
13.4 Quality Assurance..................................................................103

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 properties.
All detailed work-related safety warnings and notes will be specified at critical
points in this manual.
The safety instructions in this manual cannot cover all the
precautions that should be followed. Perform operations
considering actual onsite conditions.
SUNGROW shall not be held liable for any damage caused by
violation of the safety instructions in this manual.
1.1 PV Panels
PV strings will produce electrical power when exposed to sunlight and can
cause a lethal voltage and an electric shock.
Always keep in mind that the inverter is
multiple power supplied.
Electrical operators must wear proper personal protective
equipment: helmet, insulated footwear, gloves, etc.
Before touching the DC cables, operator must use a measuring device to
ensure that the cable is voltage-free.
The operator must follow all warnings on the PV strings and in its manual.
1.2 Utility Grid
Follow the regulations related to the utility grid.

1 Safety User Manual
2
All electrical connection
s must be in accordance with local and
national standards.
Only with the permission of the local utility grid company, the inverter
can be connected to the utility grid.
1.3 Inverter
Danger to life from electric shocks due to live voltage
Do not open the enclosure at any time. Unauthorized opening will void
warranty
and warranty claims and in most cases terminate the
operating license.
Risk of inverter damage or personal injury
Do not disconnecting
PV connectors, AC connector or battery
connectors while the inverter is running.
De-energize from all power sources. Wait at least
10 minutes for the
internal capacitors to discharge.
Ensure that there is no voltage or current before disconnect
ing any
connectors.
All safety instructions, warning labels, and nameplate on the inverter:
Must be clearly legible.
Should not be removed or covered.
Risk of burns due to hot components
Do not touch any hot parts (such as the heat sinks) during operation.
Only the LCD panel and the DC switch can safely be touched at any
time.

User Manual 1 Safety
3
Only qualified personnel can change the country setting. Unauthorized
alteration may cause a breach of the type-certificate marking.
Risk of 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;
wear a grounding wristband before touching any connectors.
Warning Label
Label
Description
Disconnect the inverter from all the external power sources
before maintenance!
Do not touch live parts for 10 minutes after disconnection
from the power sources.
Burn danger due to hot surface that may exceed 60°C.
Danger to life due to high voltages!
Only qualified personnel can open and maintain the
inverter.
Read the user manual before maintenance!
Regulatory compliance mark.
Do not dispose of the inverter together with household
wastes.
The inverter does not have a transformer.
TÜV mark of conformity.
CE mark of conformity.

1 Safety User Manual
4
1.4 Battery
Batteries deliver electric power, resulting in burns or a fire hazard when
they are short circuited, or wrongly installed.
Lethal voltages are present at the battery terminals and cables
connecting to the inverter. Severe injuries or death may occur if the
cables and terminals in the inverter are touched.
Provide sufficient ventilation for the battery system to prevent flames
and sparks from the explosive hydrogen gas that the batteries release.
Due to the dangers of hydrogen gas and battery electrolyte:
locate batteries in a designated area, complying with the local
regulations;
protect the enclosure against destruction;
do not open or deform the battery;
whenever working on the battery, wear suitable personal protective
equipment (PPE) such as rubber gloves, rubber boots and goggles;
rinse acid splashes thoroughly with clear water for a long time and
consider consulting a doctor.
Improper settings or
maintenance can permanently damage the
battery.
Incorrect inverter parameters will lead to the premature aging of
battery.

User Manual 1 Safety
5
1.5 Skills of Qualified Personnel
All installations must be performed by qualified personnel who should have:
Training for installation and commissioning of electrical system, as well as
dealing with hazards
knowledge of the manual and other related documents
knowledge of the local regulations and directives

6
2 System Solution
The inverter must only be operated with PV strings with
class II
protection in accordance with IEC 61730, application class A. It is not
allowed for the positive pole or the negative pole of the PV strings to be
grounded.
Damages to the product due to a faulty or damaged PV installation are
not covered by warranty.
Any use other than the one described in this chapter is not permitted.
SH5K-20 is a single-phase hybrid inverter applicable to both on-grid and off-grid
PV systems. With the integrated Energy Management System (EMS), they can
control and optimize the energy flow so as to increase the self-consumption of
the system.
2.1 Product Introduction
2.1.1 Inverter
Model Description
The inverter model description is as follows:
SH 5K
Code of power level
Code of Sungrow hybrid inverter
-20
Inverter version
Tab. 2-1 Power Level Description
Model
Nominal Output Power
Nominal Grid Voltage
SH5K-20
4990 W
230 Vac (single phase)

User Manual 2 System Solution
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Appearance
The following figure shows the inverter appearance, which is for reference only.
The actual product that you receive may differ.
1
234
6 7
9
8
5
10
Type
S/N A**********
SH5K-20
PV Input
AC Input and output
SUNGROW POWER SUPPLY CO., LTD.
WWW.SUNGROWPOWER.COM MADE IN CHINA
Grid Monitoring: VDE0126-1-1 VDE-AR-N 4105
Battery
xxxxxxxxx
Password **********
600V
xxxxxxxxx
xxxxxxxxx
xxxxxxxxx
xxxxxxxxx
xxxxxxxxx
xxxxxxxxx
xxxxxxxxx
xxxxxxxxx
xxxxxxxxx
xxxxxxxxx
xxxxxxxxx
xxxxxxxxx
xxxxxxxxx
xxxxxxxxx
xxxxxxxxx
xxxxxxxxx
xxxxxxxxx
xxxxxxxxx
xxxxxxxxx
xxxxxxxxx
xxxxxxxxx
xxxxxxxxx
xxxxxxxxx xxxxxxxxx xxxxxxxxx
xxxxxxxxx
xxxxxxxxx xxxxxx
xxxxxx
Fig. 2-1 Inverter Appearance
No.
Name
Description
1
AC-Grid
AC terminal for the connection to the utility grid.
2 Backup Ctrl
Two holes for the control cable and DI cable of
the backup box STB5K-20.
3 PV connection PV1+，PV1-，PV2+ and PV2-.
4
DC switch (optional)
To safely disconnect the DC circuit.
5
Wi-Fi terminal
To connect the Wi-Fi module.
6
Battery connection
BAT+ and BAT-.
7
Communication
connection
RS485, Ethernet, CAN, AI, DO and DRM.
8
Additional grounding
terminal
For reliable grounding.
9
LCD display panel
Human-computer interaction interface.
10 Nameplate
Clearly identify the product, including the SN,
password, technical data, certifications, etc.
Dimensions
The following figure shows the dimensions of the inverter.

2 System Solution User Manual
8
D (170)
W (457)
H (515)
Fig. 2-2 Dimensions (unit: mm)
LCD Panel
The LCD panel with an indicator and four buttons is on the front of the inverter.
3
Fig. 2-3 LCD Panel
No.
Name
Description
1
Screen
To display the information.
2 Indicator
Green and red can be indicated via the indicator, from
which user can know the current status. For detailed
definition, see Tab. 7-5.
3 Buttons
User can operate the LCD menu via the four buttons.
For detailed functions, see Tab. 7-1.
2.1.2 Energy Meter
The Energy Meter is installed next to the main switch to detect the electrical
measured values at the grid-connected point. It communicates with the inverter
via an RS485 connection. The dimensions are shown below.

User Manual 2 System Solution
9
Front view Side view
18 65
117
35
45.3
Fig. 2-4 Single-phase Meter Dimensions (unit: mm)
Back view Side view
72
85
45 27
45
35
Fig. 2-5 Three-phase Meter Dimensions (unit: mm)
The single-phase Energy Meter and the three-phase Energy Meter
are alternative in the delivery. The meter figures in this document
have been created for the single-
phase Energy Meter unless
otherwise specified.

For details about the Energy Meter, please refer to the Quick
Installation Guide for it.
2.2 On-grid System
By directly connecting a battery module to the inverter, the conventional PV
system can be upgraded to be an Energy Storage System (ESS).

2 System Solution User Manual
10
A B C D
E
Export powerOutput powerPV power
Load power
F
Battery power
Fig. 2-6 PV Energy Storage System (PV ESS)
Tab. 2-2 System Compositions
Item
Description
Remark
A PV strings
Compatible with monocrystalline silicon,
polycrystalline silicon, and thin-
film without
grounding.
B
Inverter
SH5K-20.
C
Energy meter
(single-phase for
example)
Measures the export power and communicates
with the inverter via the RS485 port.
D
Utility grid
Grid grounding system types: TT, TN
E Household load Devices that consume energy.
F
Battery (optional)
A Li-ion battery or a lead-acid battery.
For the TT utility grid, the N line voltage to ground must be 30 V or less.
Energy Management during Daytime
The energy management system (EMS) works in self-consumption mode by
default.
Scenario 1: PV power generation ≥Load power consumption
−First，PV power will go to emergency loads first, then loads and the battery.
−Moreover，If the battery is fully charged, the excess will go to the grid. The
feed-in power will not surpass the feed-in limitation value in initial settings.
Scenario 2: PV power generation＜Load power consumption
−First，battery will discharge and provide the energy missing.
−Moreover，inverter will draw power from the mains if the power from the PV