Sungrow SH3.0RS User manual

User Manual
1-Phase Hybrid Inverter
SH3.0RS / SH3.6RS / SH4.0RS / SH5.0RS / SH6.0RS
SH3.0_3.6_4.0_5.0_6.0RS-UEN-Ver11-202106
WWW.SUNGROWPOWER.COM

I
All Rights Reserved
AAllll RRiigghhttss RReesseerrvveedd
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").
TTrraaddeemmaarrkkss
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.
SSooffttwwaarree LLiicceennsseess
•It is prohibited to use data contained in firmware or software developed by SUN-
GROW, 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. The reader can get additional information about other de-
vices at wwwwww..ssuunnggrroowwppoowweerr..ccoomm or on the webpage of the respective component
manufacturer.
VVaalliiddiittyy
This manual is valid for the following inverter models:
•SH3.0RS
•SH3.6RS
•SH4.0RS
•SH5.0RS
•SH6.0RS
They will be referred to as "inverter" hereinafter unless otherwise specified.
TTaarrggeett GGrroouupp
This manual is intended for inverter owners who will have the ability to interact with the
inverter and qualified personnel who are responsible for the installation and commis-
sioning of the inverter. Qualified personnel should have the following skills:
•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
HHooww ttoo UUssee TThhiiss MMaannuuaall
Read the manual and other related documents before performing any work on the inver-
ter. Documents must be stored carefully and be available at all times.
Contents may be periodically updated or revised due to the product development. The
manual content of subsequent versions of the inverter may be subject to change. The
latest manual can be found at ssuuppppoorrtt..ssuunnggrroowwppoowweerr..ccoomm.
SSyymmbboollss
Important instructions contained in this manual should be followed during installation,
operation and maintenance of the inverter. They will be highlighted by the following
symbols.
Indicates a hazard with a high level of risk that, if not avoided, will result in death
or serious injury.

III
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 mi-
nor 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.

V
CCoonntteennttss
All Rights Reserved.....................................................................................................I
About This Manual.....................................................................................................II
1 Safety .............................................................................................................. 1
1.1 PV Panels..................................................................................................... 1
1.2 Utility Grid .................................................................................................... 1
1.3 Inverter ........................................................................................................ 2
1.4 Batteries ...................................................................................................... 3
2 Product Description .................................................................................... 4
2.1 System Introduction ..................................................................................... 4
2.2 Product Introduction..................................................................................... 4
2.3 Symbols on the Product ............................................................................... 6
2.4 LED Panel.................................................................................................... 7
2.5 DC Switch.................................................................................................... 8
2.6 PV Energy Storage System (PV ESS)............................................................ 8
2.6.1 PV Energy Storage System (PV ESS) .................................................. 8
2.6.2 Declaration For Back-Up Function .................................................... 10
2.7 Retrofitting the Existing PV System ............................................................. 10
3 Function Description ................................................................................ 13
3.1 Safety Function.......................................................................................... 13
3.1.1 Protection......................................................................................... 13
3.1.2 Earth Fault Alarm.............................................................................. 13
3.2 Energy Conversion and Management......................................................... 13
3.2.1 Power Derating................................................................................. 13
3.2.2 DRM (“AU”/“NZ”)...................................................................... 14
3.2.3 Regular Operational Voltage Range .................................................. 14
3.2.4 Regular Operational Frequency Range.............................................. 15
3.2.5 Reactive Power Regulation ............................................................... 15
3.2.6 Load Control..................................................................................... 15
3.3 Battery Management.................................................................................. 15
3.3.1 Charge Management........................................................................ 17
3.3.2 Discharge Management ................................................................... 18

VI
3.4 Communication and Configuration ............................................................. 18
4 Unpacking and Storage ........................................................................... 19
4.1 Unpacking and Inspection.......................................................................... 19
4.2 Inverter Storage ......................................................................................... 19
5 Mechanical Mounting .............................................................................. 20
5.1 Safety during Mounting .............................................................................. 20
5.2 Location Requirements .............................................................................. 20
5.2.1 Environment Requirements............................................................... 21
5.2.2 Carrier Requirements........................................................................ 21
5.2.3 Angle Requirements ......................................................................... 21
5.2.4 Clearance Requirements .................................................................. 22
5.3 Installation Tools......................................................................................... 23
5.4 Moving the Inverter .................................................................................... 24
5.5 Installing the Inverter .................................................................................. 25
6 Electrical Connection ............................................................................... 27
6.1 Safety Instructions...................................................................................... 27
6.2 Terminal Description................................................................................... 27
6.3 Electrical Connection Overview .................................................................. 29
6.4 Backup Wiring Diagram.............................................................................. 31
6.5 Additional Grounding Connection ............................................................... 34
6.5.1 Additional Grounding Requirements.................................................. 34
6.5.2 Connection Procedure...................................................................... 34
6.6 AC Cable Connection ................................................................................. 35
6.6.1 AC Side Requirements...................................................................... 35
6.6.2 Connecting the AC Cable.................................................................. 36
6.7 DC Cable Connection................................................................................. 39
6.7.1 PV Input Configuration...................................................................... 40
6.7.2 Assembling the PV Connectors ......................................................... 41
6.7.3 Installing the PV Connector ............................................................... 42
6.8 Emergency Load Connection (Backup) ...................................................... 43
6.9 Battery Connection..................................................................................... 46
6.9.1 Connecting the Power Cable............................................................. 46
6.9.2 Connecting the CAN Cable ............................................................... 49
6.9.3 Connecting the Enable Cable............................................................ 49
6.10 WiNet-S Connection ................................................................................ 49
6.10.1 Ethernet Communication ................................................................ 50

VII
6.10.2 WLAN Communication ................................................................... 51
6.11 Meter Connection .................................................................................... 52
6.12 RS485 Connection................................................................................... 55
6.13 DRM Connection...................................................................................... 55
7 Commissioning ........................................................................................... 59
7.1 Inspection before Commissioning............................................................... 59
7.2 Powering on the System............................................................................. 59
7.3 App Preparation......................................................................................... 60
7.4 Creating a Plant.......................................................................................... 60
7.5 Initializing the Device.................................................................................. 63
7.6 Configuring the Plant.................................................................................. 64
8 iSolarCloud App ......................................................................................... 67
8.1 Brief Introduction........................................................................................ 67
8.2 Installing the App........................................................................................ 67
8.3 Account Registration.................................................................................. 68
8.4 Login ......................................................................................................... 69
8.4.1 Requirements................................................................................... 69
8.4.2 Login Procedure............................................................................... 69
8.5 Initial Settings............................................................................................. 71
8.5.1 Feed-in Limitation............................................................................. 71
8.5.2 Off-grid Mode .................................................................................. 72
8.6 Function Overview ..................................................................................... 72
8.7 Home......................................................................................................... 72
8.8 Run Information ......................................................................................... 74
8.9 Records ..................................................................................................... 74
8.9.1 Chart................................................................................................ 74
8.9.2 Fault Alarm Record........................................................................... 75
8.9.3 Event Record.................................................................................... 76
8.10 More........................................................................................................ 76
8.10.1 System Parameters ........................................................................ 77
8.10.2 Running Time ................................................................................. 78
8.10.3 AFCI Parameters (Reserved) .......................................................... 78
8.10.4 Regular Parameters........................................................................ 79
8.10.5 Off-grid Parameters........................................................................ 79
8.10.6 Active Power Regulation ................................................................. 79
8.10.7 Reactive Power Regulation ............................................................. 80

VIII
8.10.8 Battery Discharge Time................................................................... 84
8.10.9 Battery Forced Charge Time ........................................................... 84
8.10.10 Load Control................................................................................. 85
8.10.11 Communication Parameters ......................................................... 87
8.10.12 Firmware Update.......................................................................... 87
8.10.13 Grounding Detection .................................................................... 88
8.10.14 Parallel Configuration.................................................................... 89
8.10.15 Frequency Shift Power Control ..................................................... 89
9 System Decommissioning ...................................................................... 91
9.1 Decommissioning the Inverter .................................................................... 91
9.1.1 Disconnecting the Inverter ................................................................ 91
9.1.2 Dismantling the Inverter .................................................................... 91
9.1.3 Disposal of the Inverter ..................................................................... 92
9.2 Decommissioning the Battery..................................................................... 92
10 Troubleshooting and Maintenance ................................................... 93
10.1 Troubleshooting ....................................................................................... 93
10.2 Maintenance............................................................................................ 97
10.2.1 Maintenance Notices...................................................................... 97
10.2.2 Routine Maintenance...................................................................... 99
11 Appendix .................................................................................................. 100
11.1 Technical Data ....................................................................................... 100
11.2 Quality Assurance .................................................................................. 105
11.3 Contact Information ............................................................................... 105

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1Safety
The device has been designed and tested strictly according to international safety regu-
lations. Read all safety instructions carefully prior to any work and observe them at all
times when working on or with the device.
Incorrect operation or work may cause:
•Injury or death to the operator or a third party;
•Damage to the device and other properties.
All detailed work-related safety warnings and notes are 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 dual power supplied. Electrical oper-
ators must wear proper personal protective equipment: helmet, insulated
footwear, gloves, etc.
•Before touching the DC cables, operator must use a measuring device to en-
sure that the cable is voltage-free.
•The opeator must follow all warnings on the PV strings and in its manual.
1.2 Utility Grid
Follow the regulations related to the utility grid.

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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 connect or disconnect the PV, battery and AC connectors when the
inverter is running.
•Wait at least 10 minutes for the internal capacitors to discharge after all
electric devices are removed and the inverter is powered off.
•Ensure that there is no voltage or current before connecting or disconnecting
the PV， battery and AC 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 sink) during operation. Only the DC
switch and the LED panel can safely be touched at any time.
1 Safety User Manual

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Only qualified personnel can perform the country setting. Unauthorized altera-
tion 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 in-
verter handling, be sure to:
•avoid any unnecessary touching;
•wear a grounding wristband before touching any connectors.
1.4 Batteries
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.
Improper settings or maintenance can permanently damage the battery.
Incorrect inverter parameters will lead to the premature aging of battery.
User Manual 1 Safety

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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 cur-
rent 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 energy 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
accordance with IEC 61730, application class A. It is not allowed for the posi-
tive 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
covered by warranty.
•Any use other than the one described in this document is not permitted.
•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
cannot guarantee backup power in all circumstances.
2.2 Product Introduction
MMooddeell DDeessccrriippttiioonn
The model description is as follows (take SH5.0RS as an example):

5
AAppppeeaarraannccee
The following figure shows the dimensions of the inverter. The image shown here is for
reference only. The actual product received may differ.
ffiigguurree 22--11 Inverter Appearance
NNoo.. NNaammee DDeessccrriippttiioonn
1 DC switch To safely disconnect the DC circuit whenever necessary.
2 Label Information about CCOOMM22 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.
5Nameplate
To clearly identify the product, including device model, S/
N, important specifications, marks of certification institu-
tions, etc.
6Electrical con-
nection area
PV terminals, battery terminal, AC terminal, additional
grounding terminal and communication terminals.
DDiimmeennssiioonnss
The following figure shows the dimensions of the inverter.
User Manual 2 Product Description

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ffiigguurree 22--22 Dimensions of the Inverter
IInnvveerrtteerr MMooddeell WW ((mmmm)) HH ((mmmm)) DD ((mmmm))
SH3.0RS / SH3.6RS / SH4.0RS / SH5.0RS
/ SH6.0RS 490 340 170
2.3 Symbols on the Product
SSyymmbbooll EExxppllaannaattiioonn
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.
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
before maintenance!
2 Product Description User Manual

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SSyymmbbooll EExxppllaannaattiioonn
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.
ffiigguurree 22--33 LED Panel
(a) Normal state (b) Error state
NNoo.. NNaammee DDeessccrriippttiioonn
1E-day Today’s energy yield.
2 Pac Current AC power.
3 SOC Battery SOC (State of Charge).
4LED
indicator
To indicate the working state of the inverter.
Touch it to switch the information in normal state or view multi-
ple 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. Al-
so 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 in-
dicator to activate it.
User Manual 2 Product Description

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table 2-1 State description of the LED indicator
LLEEDD ccoolloorr SSttaattee DDeeffiinniittiioonn
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.
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.
Turn the DC switch to the “ON” position before restarting the inverter.
2.6 PV Energy Storage System (PV ESS)
2.6.1 PV Energy Storage System (PV ESS)
The following figure shows inverter application in a PV energy storage system.
2 Product Description User Manual

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ffiigguurree 22--44 PV Energy Storage System
IItteemm DDeessccrriippttiioonn NNoottee
APV strings Compatible with monocrystalline silicon, polycrystalline sili-
con, and thin-film modules without grounding.
B Inverter SH3.0RS, SH3.6RS, SH4.0RS, SH5.0RS, SH6.0RS.
CMetering device Meter cupboard with power distribution system.
DUtility grid TT，TN-C，TN-S, TN-C-S,IT.
E Loads Common loads, which will be lack of power when grid is
blackout.
FProtected house
loads
Loads, connected to inverter backup port, which need un-
interrupted power supply.
GBattery
(optional) A Li-ion battery.
The following figure shows the common grid configurations.
User Manual 2 Product Description

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2.6.2 Declaration For Back-Up Function
The following statement involves SUNGROW general policies about the hybrid inverters
described in this document.
1 For hybrid inverters, the electrical installation typically includes connection of the in-
verter to both PV modules and batteries. If there is no available power from batteries
or PV modules in backup mode, the backup power supply will be automatically ter-
minated. SUNGROW shall hold no liability for any consequences arising from failing
to observe this instruction.
2 Normally, the Back-Up switching time is less than 10 ms. However, some external
factors may cause the system to fail on Back-Up mode. Therefore, the users must
be aware of conditions and follow the instructions as below:
•Do not connect loads that are dependent on a stable energy supply for a reliable
operation.
•Do not connect the loads whose total capacity is greater than the maximum Back-
Up capacity.
•Do not connect the loads that may cause very high start-up current surges, such as
air-conditioner, high-power pump, vacuum cleaner, and hair drier.
•Due to the condition of the battery itself, battery current might be limited by some
factors, including but not limited to the temperature and weather.
DDeeccllaarraattiioonn FFoorr BBaacckk--UUpp OOvveerrllooaadd PPrrootteeccttiioonn
The inverter will restart in case of overload protection. The time required for restarting
will increase (10 min at most) if overload protection repeats. Try to reduce Back-Up load
power within maximum limitation or remove the loads which may cause very high start-
up current surges.
2.7 Retrofitting the Existing PV System
The hybrid inverter is compatible with any single-phase PV grid-connected inverters. An
existing PV system can be retrofitted to be a PV ESS with the addition of the hybrid
inverter.
The power generation from the existing PV inverter will be firstly provided to the loads
and then charge the battery. With the energy management function of the hybrid inver-
ter, the self-consumption of the new system will be greatly improved.
2 Product Description User Manual