Sungrow SH3.0RS User manual

SH3.0RS/
SH3.6RS/SH4.0RS/SH5.0RS/
SH6.0RS1-phase Hybrid
InverterUser ManualSH3.0-6.0RS-
UEN-Ver15-202211
User Manual
1-phase Hybrid Inverter
SH3.0RS/SH3.6RS/SH4.0RS/SH5.0RS/SH6.0RS
SH3.0-6.0RS-UEN-Ver15-202211

I
All Rights Reserved
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.
All other trademarks or registered trademarks mentioned in this manual 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.

II
About This Manual
The manual mainly contains the product information, as well as guidelines for installation,
operation, and maintenance. The manual does not include complete information about the
photovoltaic (PV) system. Readers can get additional information at www.sungrowpower.
com or on the webpage of the respective component manufacturer.
Validity
This manual is valid for the following model of low-power grid-connected PV string inverters:
• SH3.0RS
• SH3.6RS
• SH4.0RS
• SH5.0RS
• SH6.0RS
It will be referred to as "inverter" hereinafter unless otherwise specified.
Target Group
This manual is intended for professional technicians who are responsible for installation, op-
eration, and maintenance of inverters, and users who need to check inverter parameters.
The inverter must only be installed by professional technicians. The professional technician
is required to meet the following requirements:
• Know electronic, electrical wiring and mechanical expertise, and be familiar with electri-
cal and mechanical schematics.
• Have received professional training related to the installation and commissioning of elec-
trical equipment.
• Be able to quickly respond to hazards or emergencies that occur during installation and
commissioning.
• Be familiar with local standards and relevant safety regulations of electrical systems.
• Read this manual thoroughly and understand the safety instructions related to
operations.
How to Use This Manual
Please read this manual carefully before using the product and keep it properly at a place
for easy access.
All contents, pictures, marks, and symbols in this manual are owned by SUNGROW. No part
of this document may be reprinted by the non-internal staff of SUNGROW without written
authorization.
Contents of this manual may be periodically updated or revised, and the actual product pur-
chased shall prevail. Users can obtain the latest manual from support.sungrowpower.com
or sales channels.

III
Symbols
This manual contains important safety instructions, which are highlighted with the following
symbols, to ensure personal and property safety during usage, or to help optimize the prod-
uct performance in an efficient way.
Please carefully understand the meaning of these warning symbols to better use the manual.
Indicates high-risk potential hazards that, if not avoided, may lead to death or seri-
ous injury.
Indicates moderate-risk potential hazards that, if not avoided, may lead to death or
serious injury.
Indicates low-risk potential hazards that, if not avoided, may lead to minor or mod-
erate injury.
Indicates potential risks that, if not avoided, may lead to device malfunctions or fi-
nancial losses.
“NOTE” indicates additional information, emphasized contents or tips that may be
helpful, e.g., to help you solve problems or save time.

V
Contents
All Rights Reserved .....................................................................................................I
About This Manual......................................................................................................II
1 Safety Instructions ............................................................................................1
1.1 Unpacking and Inspection ...............................................................................1
1.2 Installation Safety ...........................................................................................2
1.3 Electrical Connection Safety............................................................................2
1.4 Operation Safety ............................................................................................4
1.5 Maintenance Safety........................................................................................4
1.6 Disposal Safety ..............................................................................................5
2 Product Description ..........................................................................................6
2.1 System Introduction........................................................................................6
2.2 Product Introduction........................................................................................7
2.3 Symbols on the Product ..................................................................................8
2.4 LED Panel .....................................................................................................9
2.5 DC Switch....................................................................................................10
2.6 PV Energy Storage System (PV ESS) ............................................................ 11
2.6.1 PV Energy Storage System (PV ESS)................................................... 11
2.6.2 Declaration For Back-Up Function ........................................................12
2.7 Retrofitting the Existing PV System................................................................13
3 Function 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...................................................................................15
3.2.2 DRM (“AU”/“NZ”).................................................................................16
3.2.3 Regular Operational Voltage Range .....................................................16
3.2.4 Regular Operational Frequency Range.................................................16
3.2.5 Reactive Power Regulation..................................................................17
3.3 Battery Management ....................................................................................17
3.3.1 Charge Management...........................................................................18

VI
3.3.2 Discharge Management.......................................................................19
3.4 PID Recovery Function .................................................................................20
3.5 Communication and Configuration .................................................................21
3.6 Import Power Limit Function ..........................................................................21
4 Unpacking and Storage .................................................................................22
4.1 Unpacking and Inspection .............................................................................22
4.2 Inverter Storage ...........................................................................................22
5 Mechanical Mounting .....................................................................................24
5.1 Safety during Mounting .................................................................................24
5.2 Location Requirements .................................................................................24
5.2.1 Environment Requirements..................................................................25
5.2.2 Carrier Requirements ..........................................................................25
5.2.3 Angle Requirements............................................................................26
5.2.4 Clearance Requirements .....................................................................26
5.3 Installation Tools...........................................................................................27
5.4 Moving the Inverter.......................................................................................28
5.5 Installing the Inverter.....................................................................................29
6 Electrical Connection .....................................................................................31
6.1 Safety Instructions........................................................................................31
6.2 Terminal Description .....................................................................................32
6.3 Electrical Connection Overview .....................................................................34
6.4 Backup Wiring Diagram ................................................................................35
6.5 External Protective Grounding Connection .....................................................38
6.5.1 External Protective Grounding Requirements ........................................38
6.5.2 Connection Procedure.........................................................................38
6.6 AC Cable Connection ...................................................................................39
6.6.1 AC Side Requirements ........................................................................39
6.6.2 Connecting the AC Cable ....................................................................40
6.7 DC Cable Connection ...................................................................................43
6.7.1 PV Input Configuration ........................................................................44
6.7.2 Assembling the PV Connectors ............................................................45
6.7.3 Installing the PV Connector..................................................................46
6.8 Emergency Load Connection (Backup) ..........................................................48
6.9 Battery Connection .......................................................................................50
6.9.1 Connecting the Power Cable................................................................51
6.9.2 Connecting the CAN Cable ..................................................................54

VII
6.9.3 Connecting the Enable Cable...............................................................55
6.10 WiNet-S Connection ...................................................................................55
6.10.1 Ethernet Communication ...................................................................55
6.10.2 WLAN Communication ......................................................................57
6.11 Meter Connection .......................................................................................58
6.12 RS485 Connection......................................................................................60
6.13 DRM Connection ........................................................................................60
7 Commissioning ...............................................................................................64
7.1 Inspection before Commissioning ..................................................................64
7.2 Powering on the System ...............................................................................64
7.3 App Preparation ...........................................................................................65
7.4 Plant Creation ..............................................................................................65
8 iSolarCloud App ..............................................................................................73
8.1 Brief Introduction ..........................................................................................73
8.2 Installing the App..........................................................................................73
8.3 Account Registration.....................................................................................74
8.4 Login ...........................................................................................................75
8.4.1 Requirements .....................................................................................75
8.4.2 Login Procedure .................................................................................75
8.5 Initial Settings...............................................................................................77
8.5.1 Feed-in Limitation ...............................................................................77
8.5.2 Backup Mode......................................................................................77
8.6 Function Overview........................................................................................78
8.7 Home ..........................................................................................................78
8.8 Run Information............................................................................................79
8.9 Records.......................................................................................................80
8.9.1 Chart..................................................................................................80
8.9.2 Fault Alarm Record .............................................................................81
8.9.3 Event Record......................................................................................82
8.10 More..........................................................................................................82
8.10.1 System Parameters...........................................................................83
8.10.2 Running Time ...................................................................................84
8.10.3 Regular Parameters ..........................................................................84
8.10.4 Off-grid Parameters...........................................................................85
8.10.5 Active Power Regulation....................................................................85
8.10.6 Reactive Power Regulation ................................................................86

VIII
8.10.7 Battery Discharge Time .....................................................................90
8.10.8 Battery Forced Charge Time ..............................................................90
8.10.9 Communication Parameters...............................................................91
8.10.10 Firmware Update.............................................................................92
8.10.11 Grounding Detection........................................................................93
8.10.12 Frequency Shift Power Control .........................................................93
8.10.13 Import Power Limit...........................................................................94
9 System Decommissioning ............................................................................95
9.1 Decommissioning the Inverter .......................................................................95
9.1.1 Disconnecting the Inverter ...................................................................95
9.1.2 Dismantling the Inverter.......................................................................95
9.1.3 Disposal of the Inverter........................................................................96
9.2 Decommissioning the Battery ........................................................................96
10 Troubleshooting and Maintenance ............................................................97
10.1 Troubleshooting..........................................................................................97
10.2 Maintenance ............................................................................................106
10.2.1 Maintenance Notices ....................................................................... 106
10.2.2 Routine Maintenance....................................................................... 107
11 Appendix ......................................................................................................108
11.1 Technical Data..........................................................................................108
11.2 Quality Assurance..................................................................................... 113
11.3 Contact Information................................................................................... 113

1
1Safety Instructions
When installing, commissioning, operating, and maintaining the product, strictly observe the
labels on the product and the safety requirements in the manual. Incorrect operation or work
may cause:
• Injury or death to the operator or a third party.
• Damage to the product and other properties.
• The safety instructions in this manual are only supplements and cannot cover
all the precautions that should be followed. Perform operations considering ac-
tual onsite conditions.
• SUNGROW shall not be held liable for any damage caused by violation of gen-
eral safety operation requirements, general safety standards, or any safety in-
struction in this manual.
• When installing, operating, and maintaining the product, comply with local laws
and regulations. The safety precautions in this manual are only supplements
to local laws and regulations.
1.1 Unpacking and Inspection
Check all safety signs, warning labels and nameplates on devices.
Ensure that the safety signs, warning labels and nameplates must be clearly visible
and cannot be removed or covered before the device is decommissioned.
After receiving the product, check whether the appearance and structural parts of
the device are damaged, and check whether the packing list is consistent with the
actual ordered product. If there are problems with the above inspection items, do
not install the device and contact your distributor first. If the problem persists, con-
tact SUNGROW in time.

2
1.2 Installation Safety
Make sure there is no electrical connection before installation.
Before drilling, avoid the water and electricity wiring in the wall.
Improper installation may cause personal injury!
• If the product supports hoisting transport and is hoisted by hoisting tools, no
one is allowed to stay under the product.
• When moving the product, be aware of the product weight and keep the balance
to prevent it from tilting or falling.
Before operating the product, must check and ensure that tools to be used have
been maintained regularly.
1.3 Electrical Connection Safety
Before electrical connections, please make sure that the inverter is not damaged,
otherwise it may cause danger!
Before electrical connections, please make sure that the inverter switch and all
switches connected to the inverter are set to "OFF", otherwise electric shock may
occur!
The PV string will generate lethal high voltage when exposed to sunlight.
• Operators must wear proper personal protective equipment during electrical
connections.
• Must ensure that cables are voltage-free with a measuring instrument before
touching DC cables.
• Respect all safety instructions listed in relevant documents about PV strings.
1 Safety Instructions User Manual

3
Danger to life due to a high voltage inside the inverter!
• Be sure to use special insulation tools during cable connections.
• Note and observe the warning labels on the product, and perform operations
strictly following the safety instructions.
• Respect all safety instructions listed in this manual and other pertinent
documents.
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 inver-
ter are touched.
Damage to the product caused by incorrect wiring is not covered by the warranty.
• Electrical connection must be performed by professionals.
• All cables used in the PV generation system must be firmly attached, properly
insulated, and adequately dimensioned.
Check the positive and negative polarity of the PV strings, and connect the PV con-
nectors to corresponding terminals only after ensuring polarity correctness.
During the installation and operation of the inverter, please ensure that the positive
or negative poles of PV strings do not short-circuit to the ground. Otherwise, an
AC or DC short-circuit may occur, resulting in equipment damage. The damage
caused by this is not covered by the warranty.
Comply with the safety instructions related to PV strings and the regulations re-
lated to the local grid.
User Manual 1 Safety Instructions

4
1.4 Operation Safety
Please comply with the following requirements when the product is running:
• Do not touch its enclosure.
• It is strictly forbidden to plug and unplug any connector on the inverter.
• Do not touch any wiring terminal of the inverter. Otherwise, electric shock may
occur.
• Do not disassemble any parts of the inverter. Otherwise, electric shock may
occur.
• It is strictly forbidden to touch any hot parts of the inverter (such as the heat
sink). Otherwise, it may cause burns.
• Do not operate the DC switch if the inverter is equipped with the DC switch. Oth-
erwise, device damage or personal injury may occur.
1.5 Maintenance Safety
Risk of inverter damage or personal injury due to incorrect service!
• Before any service work, first disconnect the grid-side AC circuit breaker and
check the inverter status. If the inverter indicator is off, please wait until night to
disconnect the DC switch. If the inverter indicator is on, directly disconnect the
DC switch.
• After the inverter is powered off for, measure the voltage and current with pro-
fessional instrument. Only when there is no voltage nor current can operators
who wear protective equipment operate and maintain the inverter.
• Even if the inverter is shut down, it may still be hot and cause burns. Wear pro-
tective gloves before operating the inverter after it cools down.
Touching the power grid or the contact points and terminals on the inverter con-
nected to the power grid may lead to electric shock!
• The power grid side may generate voltage. Always use a standard voltmeter to
ensure that there is no voltage before touching.
To prevent misuse or accidents caused by unrelated personnel, post prominent
warning signs or demarcate safety warning areas around the product.
1 Safety Instructions User Manual

5
To avoid the risk of electric shock, do not perform any other maintenance opera-
tions beyond those described in this manual. If necessary, contact your distributor
first. If the problem persists, contact SUNGROW. Otherwise, the losses caused is
not covered by the warranty.
1.6 Disposal Safety
Please scrap the product in accordance with relevant local regulations and stand-
ards to avoid property losses or casualties.
User Manual 1 Safety Instructions

6
2Product Description
2.1 System Introduction
The inverter is a transformerless 1-phase hybrid inverter. As an integral component in the
power system, the inverter is designed to convert the direct current power generated from
the PV modules or batteries into grid-compatible AC current and feeds the AC current to the
utility grid.
The 1-phase hybrid inverters are applicable to both on-grid and off-grid PV systems. With
the integrated Energy Management System (EMS), they can control and optimize the en-
ergy flow so as to increase the self-consumption of the system.
• The inverter must only be operated with PV strings with class II protection in ac-
cordance 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. This can cause the
inverter to be destroyed.
• Damages to the product due to a faulty or damaged PV installation are not cov-
ered by warranty.
• Any use other than the one described in this document is not permitted.
• During the installation and operation of the inverter, please ensure that the posi-
tive or negative polarities of PV strings and those of batteries do not short-cir-
cuit to the ground. Otherwise, an AC or DC short-circuit may occur, resulting in
equipment damage. The damage caused by this is not covered by the warranty.
• Do not short-circuit the Backup port during operation. Otherwise, the inverter
or power distribution system will be seriously damaged. The loss is not covered
by the SUNGROW warranty.
• Do not connect any local load between the inverter and the AC circuit breaker.
• For the TT utility grid, the N line voltage to ground must be 30 V or less.
• The utility grid must be a TN system for the off-grid application.
• The system is not suitable for supplying life-sustaining medical devices. It can-
not guarantee backup power in all circumstances.
• The inverter applies only to the scenarios described in this manual.

7
2.2 Product Introduction
Model Description
The model description is as follows (take SH5.0RS as an example):
Appearance
The following figure shows the appearance of the inverter. The image shown here is for
reference only. The actual product received may differ.
figure 2-1 Inverter Appearance
No. Name Description
1 DC switch To safely disconnect the DC circuit whenever necessary.
2 Label Information about COM2 pin definition, supported DRM
modes, etc.
3Hanger To hang the inverter on the wall-mounting bracket.
4LED pannel
The LED screen indicates the running information and the
LED indicator indicates the current working state of the
inverter.
User Manual 2 Product Description

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No. Name Description
5Nameplate
To clearly identify the product, including device model, S/N,
important specifications, marks of certification institutions,
etc.
6Electrical connec-
tion area
PV terminals, battery terminal, AC terminal, additional
grounding terminal and communication terminals.
Dimensions
The following figure shows the dimensions of the inverter.
figure 2-2 Dimensions of the Inverter
Inverter Model W (mm) H (mm) D (mm)
SH3.0RS / SH3.6RS / SH4.0RS / SH5.0RS
/ SH6.0RS 490 340 170
2.3 Symbols on the Product
Symbol Explanation
Parameters on the PV side.
Parameters on the battery side.
Parameters on the AC on-grid side.
Parameters on the AC backup side.
Regulatory compliance mark.
TÜV mark of conformity.
CE mark of conformity.
2 Product Description User Manual

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Symbol Explanation
UKCA mark of conformity.
The inverter does not have a transformer.
Do not dispose of the inverter together with household waste.
Disconnect the inverter from all the external power sources be-
fore maintenance!
Read the user manual before maintenance!
Burn danger due to the hot surface that may exceed 60℃.
Danger to life due to high voltages!
Do not touch live parts for 10 minutes after disconnection from
the power sources.
Only qualified personnel can open and maintain the inverter.
Additional grounding point.
* The table shown here is for reference only. The actual product received may differ.
2.4 LED Panel
The LED panel with a display screen and an indicator is on the front of the inverter.
figure 2-3 LED Panel
(a) Normal state (b) Error state
No. Name Description
1E-day Today’s energy yield
2 Pac Real-time AC output power
3 SOC Battery SOC (State of Charge)
User Manual 2 Product Description

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No. Name Description
4LED
indicator
To indicate the working state of the inverter.
Touch it to switch the information in normal state or view multiple
error codes in error state.
5 Error code The error code in the figure is just an example.
• In normal state, the E-day, Pac and SOC information will be displayed alternately. Also
you can touch the LED indicator to switch the information.
• In error state, touch the LED indicator to view multiple error codes.
• If there is no operation for 5 minutes, the display screen will be off. Touch the LED indica-
tor to activate it.
table 2-1 State description of the LED indicator
LED color State Definition
Blue
On The inverter is operating normally.
Flashing The inverter is at standby or startup state (not
feeding power into the grid).
Red
On A system fault has occured.
Gray
Off Both the AC and DC sides are powered down.
Voltage may still be present in AC side circuits after the indicator is off. Pay atten-
tion to the electricity safety during operating.
2.5 DC Switch
The DC switch is used to safely disconnect the DC circuit whenever necessary.
The inverter operates automatically when input and output requirements are met. Rotate the
DC switch to the “OFF” position to stop the inverter when a fault occurs or when you need to
stop the inverter.
2 Product Description User Manual