Sungrow SH5K-20 Owner's manual

SH5K-20-QUEN-Ver19-202007 Version：1.9
Quick User Manual
SH5K-20
Grid-Connected Hybrid Inverter

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
System Overview
Sungrow/LG/GCL/Pylon (US2000B)/BlueSun/BYD Li-ion Battery
Fuse (optional)
L
A
PV1 PV2
B
LN
N PE
PE bar Neutral bar Home appliance
Main Switch Solar
switch
SUNGROW meter
Utility Grid
Copper A2 B2
1-phase sensor
Li-ion
battery
SH5K-20
CANH CANL
BAT_Com.
E-N link
※The E-N link connection only applies to Australia and New Zealand. Installation of the copper is required in case of parallel PV input.

III
Copper
Emergency Power Supply (EPS)
Fuse (optional)
BAT_Com.
SH5K-20
L
A
PV1 PV2
B
LN
N PE
PE bar Neutral bar Home appliance
Main Switch
Utility Grid
A2 B2
1-phase sensor
Li-ion
battery
Emergency loads STB5K-20
DI cable
Control cable
VDD
DI3
DI2
DI1
C1 C2
E-N link
※The E-N link connection only applies to Australia and New Zealand. Installation of the copper is required in case of parallel PV input.
The neutral lines for the grid, the EPS and the inverter AC terminals are all inter-connected inside the STB5K-20. And it is the same for the PE lines.

IV
Copper
Fuse (optional)
BAT_Com.
SH5K-20
L
PV1 PV2
LN
N PE
PE bar Neutral bar Home appliance
Main Switch
Utility Grid
A2 B2
1-phase sensor
Li-ion
battery
Emergency loads
STB5K-20
DI cable
Control cable
A B
PV
inverter
Retrofitting the existing PV system
VDD
DI3
DI2
DI1
C1 C2
E-N link
※The E-N link connection only applies to Australia and New Zealand. Installation of the copper is required in case of parallel PV input.
The neutral lines for the grid, the EPS and the inverter AC terminals are all inter-connected inside the STB5K-20. And it is the same for the PE lines.

V
Contents
System Overview.......................................................................II
1Safety....................................................................................1
1.1 PV Panels .................................................................................1
1.2 Utility Grid..................................................................................1
1.3 Inverter......................................................................................2
1.4 Battery.......................................................................................4
2Installation............................................................................5
2.1 Location Requirements .............................................................5
2.2 Installing the Inverter.................................................................6
2.3 Installing the Energy Meter........................................................8
3Electrical Connection .........................................................9
3.1 Terminal Description..................................................................9
3.2 Additional Grounding Connection............................................ 11
3.3 AC Cable Connection..............................................................12
3.4 DC Cable Connection..............................................................13
3.5 Communication Connection ....................................................14
3.6 Energy Meter Connection........................................................16
3.7 Battery Connection..................................................................20
3.8 STB5K-20 Connection (EPS)..................................................22
3.9 DO Connection........................................................................24
3.10 DRED Connection...................................................................25
3.11 Retrofitting the Existing PV System.........................................26
4Commissioning .................................................................28
4.1 Button Function.......................................................................28
4.2 Powering on the System .........................................................29
4.3 LCD Initial Settings..................................................................29
4.4 Result Verification....................................................................34

VI
5LCD Operation...................................................................38
5.1 Main Screen.............................................................................38
5.2 Viewing the Error Codes..........................................................39
5.3 LCD Menu................................................................................40
5.4 Setting the Country..................................................................41
5.5 Setting the Protective Parameters ...........................................43
5.6 Setting the Communication Parameters ..................................44
5.7 Setting the Battery Type...........................................................44
6Troubleshooting................................................................46
6.1 Troubleshooting of LED Indicators...........................................46
6.2 Troubleshooting of the Errors...................................................46
7Appendices........................................................................55
7.1 Inverter Technical Data............................................................55
7.2 STB5K-20 (backup box) Technical Data ..................................57
7.3 Meter Technical Data...............................................................57
7.4 Quality Assurance....................................................................58

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 Quick User Manual
2
All electrical connections 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 disconnecting 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.

Quick 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.
Label Description
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.
Additional grounding point.

1 Safety Quick 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.

5
2 Installation
2.1 Location Requirements
The inverter with IP65 can be installed both indoors and outdoors.
Install the inverter in a place convenient for electrical connection, operation, and
maintenance.
IP65
Installation Environment Requirements
The installation environment must be free of inflammable or explosive
materials.
The location should be not accessible to children.
The ambient temperature and relative humidity must meet the following
requirements.
Max.
+60°C Min.
-25°C
Max. RH
+100%
Avoid direct exposure to sun, rain and snow.
The inverter should be well ventilated. Ensure air circulation.
Never install the inverter in living areas. The inverter will generate noise
during operation, affecting daily life.
Carrier Requirements
The installation carrier should meet the following requirements:

2 Installation Quick User Manual
6
Made of non-flammable materials
Max. load bearing capacity ≥4
times of the inverter weight
KG
Installation Angle Requirements
Never install the inverter horizontally, or with a forward tilt or with a backward tilt
or even with upside down. The horizontal installation can result in damage to
the inverter.
Installation Clearance Requirements
Reserve enough clearance around the inverter to ensure sufficient space for
heat dissipation. Clearance requirements for single and multiple installation:
300mm
300mm
300mm300mm
2.2 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. They
are not included in the delivery scope.

Quick User Manual 2 Installation
7
Self-tapping screw M6 Spring washerFender washerExpansion tube
The depth of the holes should be about 70 mm. Be sure to adhere to the
following screw assembly sequence: self-tapping screw, spring washer, fender
washer, wall-mounting bracket.
Mark the positions
1
φ10
Drill the holes
2
D 70 mm
240 mm
Place the expansion tubes Secure the bracket
4
3(9.0 N m)
.
56
Mount the inverter to the bracket Secure the inverter with two
M5 screws and washers
(3.0 N m)
.

2 Installation Quick User Manual
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2.3 Installing the Energy Meter
The SUNGROW Energy Meter should be installed between the grid and the
load. It supports a 35 mm DIN-rail installation, as shown in the following figure.
Single-phase Energy Meter Three-phase Energy Meter
Fig. 2-1 Installing the Meter to the Rail
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.

9
3 Electrical Connection
3.1 Terminal Description
Backup Ctrl
Fig. 3-1 Terminals at the Bottom of the Inverter
Label
Description
Decisive Voltage
Classification
AC-Grid
AC terminal for connection to the utility
grid.
DVC-C
Backup Ctrl
Two holes for the control cable and DI
cable of the backup box STB5K-20.
DVC-A
PV1+,
PV1-,
PV2+, PV2-
Positive and negative DC input
connectors.
DVC-C
ON, OFF
DC switch.
Not applicable
Com.
Connectors for Ethernet, RS485,
PT1000, CAN, DO and DRM.
DVC-A
Wi-Fi
Connector for the WiFi module.
DVC-A
BAT+ ，
BAT-
Connectors for the battery power cables.
DVC-C
Unscrew four screws and remove the enclosure lid. Retain the screws for later
installation (torque 4.2 Nm).

3 Electrical Connection Quick User Manual
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Connection terminals on the inner configuration circuit board are shown below:
Fig. 3-2 Configuration Circuit Board Inside the Inverter
No.
Label
Connection
Tool
Requirements
Decisive
Voltage
Classification
1
C1, C2
Backup box
STB5K-20
Flat-head
screwdriver with
an open end of 3
mm
DVC-A
2
Copper
PV (for parallel
mode)
Phillips
screwdriver
DVC-C
3
Ethernet
Communication
-
DVC-A
4
DRM
Demand response
enabling device
(DRED)
Flat-head
screwdriver with
an open end of 2
DVC-A

Quick User Manual 3 Electrical Connection
11
No.
Label
Connection
Tool
Requirements
Decisive
Voltage
Classification
5
DI
Backup box
STB5K-20
mm
6
RS485
A1, B1 reserved,
A2, B2 for the
meter
7
120 Ohm
RS485
-
Not applicable
8
BAT_Temp.
Temperature
sensor PT1000
Flat-head
screwdriver with
an open end of 3
mm
DVC-A
9
BAT_Com.
(CANH,
CANL)
Battery
communication
10
DO1
Power
management
11
DO2
Earth fault alarm
12
BAT+, BAT-
Battery
Phillips
screwdriver
DVC-C
3.2 Additional Grounding Connection
The additional grounding
terminal is equipped at the side
of the inverter. Be sure to
connect this additional
grounding terminal to the PE
bar for reliable grounding and
ensure that the grounding
resistance should be less than
10 Ohm.
M5
The ground connection of this additional grounding terminal cannot
replace the connection of the PE terminal of the AC cable. Make sure
the two terminals are both grounded reliably.
The additional grounding cable should be of the same cross section as the PE
wire in the AC cable.
Additional grounding cable and OT/DT terminal are prepared by customers.
1. Prepare the cable and OT/DT terminal.

3 Electrical Connection Quick User Manual
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E
L = E + (2~3)mm
12
1: Heat shrink tubing
2: OT/DT terminal
2. Fasten the cable with a screwdriver.
M5
3.0N.m
3. Apply paint to the grounding terminal to ensure corrosion resistance.
3.3 AC Cable Connection
Install an AC circuit breaker (recommended specification 32 A) between the
inverter and the loads. In the systems with multiple inverters, protect each
inverter with a separate circuit breaker.
Make sure to disconnect the AC circuit breaker and secure it against
reconnection before cable connection.