Sungrow SH3K6 User manual

SH3.6_4.6K-UEN-Ver12-202003 Version：1.2
User Manual
SH3K6 / SH4K6
Grid-Connected Hybrid
Inverter

I
About This Manual
Applicability
This manual is applicable to the inverter types:
SH3K6
SH4K6
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 menu.
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 www.sungrowpower.com.
Symbols
Safety instructions will be highlighted with the following symbols.
Symbol
Explanation
Indicates a hazard with a high level of risk that, if not
avoided, will result in death or serious injury.
Indicates a hazard with a medium level of risk that, if not
avoided, could result in death or serious injury.

II
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.

III
Contents
About This Manual.....................................................................I
1Safety....................................................................................1
2System Solution..................................................................6
2.1 PV Energy Storage System (PV ESS) .................................... 11
2.2 Retrofitting the Existing PV System.........................................13
3Function Description ........................................................15
3.1 Safety Function .......................................................................15
3.1.1 Protection................................................................................15
3.1.2 Earth Fault Alarm.....................................................................15
3.1.3 SPI and Auto Test (Italy only) ..................................................15
3.2 Energy Conversion and Management.....................................16
3.2.1 Power Derating........................................................................ 16
3.2.2 Regular Operational Voltage Range........................................17
3.2.3 Regular Operational Frequency Range...................................19
3.2.4 Active Power Regulation..........................................................20
3.2.5 Reactive Power Regulation ..................................................... 21
3.2.6 Load Control............................................................................22
3.3 Battery Management...............................................................22
3.3.1 Charge Management............................................................... 23
3.3.2 Discharge Management ..........................................................24
3.3.3 Maintenance Management......................................................24
3.3.4 Battery Temperature Sensor (PT1000).................................... 25
3.4 Communication and Configuration..........................................25
4Unpacking and Storing.....................................................26
4.1 Unpacking and Inspecting.......................................................26
4.2 Delivery Contents....................................................................27
4.3 Storing the Inverter..................................................................28
5Mechanical Mounting........................................................29

IV
5.1 Safety during Mounting............................................................29
5.2 Location Requirements............................................................29
5.3 Tools ........................................................................................31
5.4 Installing the Inverter................................................................33
5.5 Grounding the Inverter.............................................................34
5.6 Installing the Energy Meter......................................................35
6Electrical Connection .......................................................36
6.1 Terminal Description ................................................................36
6.2 Energy Meter Connection ........................................................38
6.3 Grid Connection.......................................................................41
6.3.2 Assembling the AC Connector................................................. 42
6.3.3 Installing the AC Connector..................................................... 43
6.4 PV Connection.........................................................................43
6.4.1 PV Input Configuration............................................................ 44
6.4.2 Connecting the Inverter to the PV Array.................................. 45
6.5 Communication Connection.....................................................48
6.5.1 Ethernet Connection ............................................................... 48
6.5.2 Wi-Fi Connection..................................................................... 50
6.6 Battery Connection ..................................................................51
6.6.1 Connecting the Power Cable................................................... 51
6.6.2 Connecting the CAN Cable ..................................................... 52
6.6.3 Connecting the Temperature Sensor....................................... 53
6.7 DO Connection ........................................................................54
7Commissioning .................................................................57
7.1 Inspection before Commissioning............................................57
7.2 Button Introduction...................................................................57
7.3 Commissioning Procedure.......................................................58
7.4 Result Verification....................................................................63
7.4.1 Energy Meter Installation and Connection............................... 63
7.4.2 Battery Information.................................................................. 65
7.4.3 System Time ........................................................................... 66
8Troubleshooting and Maintenance..................................67

V
8.1 Troubleshooting.......................................................................67
8.1.1 LED Indicator .......................................................................... 67
8.1.2 Errors on the App or LCD Screen............................................67
8.2 Maintenance............................................................................ 76
8.2.1 Routine Maintenance ..............................................................76
8.2.2 Replacing the Button Cell........................................................76
9System Decommissioning ...............................................77
9.1 Decommissioning the Inverter.................................................77
9.2 Decommissioning the Battery..................................................78
10 Appendix II: LCD Operation.............................................79
10.1 Main Screen............................................................................79
10.2 LCD Menu Structure................................................................80
10.3 Starting and Stopping the Inverter........................................... 82
10.4 Advanced Settings ..................................................................82
10.4.1 Inputting Password................................................................82
10.4.2Adding the Existing System...................................................82
10.4.3 Setting the Battery Type........................................................83
10.4.4 Setting the Battery Usage Time............................................. 84
10.4.5 Setting Forced Charge ..........................................................84
10.4.6 Setting the Protective Parameters......................................... 84
10.4.7 Setting Reactive Power Regulation ....................................... 85
10.4.8 Setting Active Power Response.............................................86
10.4.9 Setting Load Control..............................................................86
10.4.10 Setting the Communication Parameters..............................88
10.4.11 Testing Earth Fault...............................................................88
10.4.12 PT1000 Switch Setting........................................................ 88
10.4.13 Factory Reset......................................................................89
10.5 Setting the Time ......................................................................89
10.6 Setting the Country..................................................................89
10.7 Viewing the Error Codes .........................................................90
10.8 Auto Test (Italy) .......................................................................91
11 Appendix IV: Power Response ........................................94

VI
11.1 For Countries except Italy........................................................94
11.1.1 “Qt” Mode.............................................................................. 94
11.1.2 “Q(P)” Mode .......................................................................... 94
11.1.3 “Q(U)” Mode.......................................................................... 95
11.1.4 Over-frequency Response .................................................... 96
11.2 For Italy (“IT”)...........................................................................97
11.2.1 “Qt” Mode.............................................................................. 97
11.2.2 “Q(P)” Mode .......................................................................... 98
11.2.3 “Q(U)” Mode.......................................................................... 98
11.2.4 Volt-watt Response ............................................................... 99
11.2.5 Frq-watt Response.............................................................. 100
11.2.6 Interface Protection System (SPI) ....................................... 101
12 Appendix V: Technical Data...........................................104
12.1 Inverter...................................................................................104
12.2 Energy Meter .........................................................................106
12.3 Quality Assurance..................................................................106

1
1 Safety
General 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 the property safety of the operator or a third
party.
Lethal voltage!
PV strings will produce electrical power when exposed to sunlight
and can cause a lethal voltage and an electric shock.
Only qualified personnel can perform the wiring of the PV panels.
All electrical connections must be in accordance with local and
national standards.
Only with the permission of the utility grid, the inverter can be
connected to the utility grid.
Inverter
A warning label and a nameplate are pasted on the side of the inverter.
Tab. 1-1 Symbols on the Inverter
Symbol
Explanation
Disconnect the inverter from all the external power sources
before service!
Do not touch live parts until 10 minutes after disconnection
from the power sources.

1 Safety User Manual
2
Symbol
Explanation
There is a danger from a hot surface that may exceed
60 °C.
Danger to life due to high voltages!
Only qualified personnel can open and service the
inverter.
Check the user manual before service!
Do not dispose of the inverter together with household
wastes.
The inverter does not have a transformer.
TUV mark of conformity.
CE mark of conformity.
* The warning label in English is applied before delivery. Labels in other
languages are included in the delivery scope may be applied if needed..
Danger to life from electric shock due to live voltage
Do not open the enclosure when the inverter is running. Unauthorized
opening will void guarantee and warranty claims and in most cases
terminate the operating license.
When the enclosure lid is removed, live components can be touched
which can result in death or serious injury due to electric shock.
Danger to life from electric shock due to damaged inverter
Only operate the inverter when it is technically faultless and in a safe
state.
Operating a damaged inverter can lead to hazardous situations that can
result in death or serious injuries due to electric shock.

User Manual 1 Safety
3
Risk of inverter damage or personal injury
Do not pull out PV connectors, AC connector or battery connectors
while the inverter is running. De-energize from all multiple power
sources. Wait 10 minutes for the internal capacitors to discharge. Verify
that there is no voltage or current before pulling any connector.
All the warning labels and nameplate on the inverter body:
must be clearly visible; and
must not be removed, covered or pasted.
Risk of burns due to hot components
Do not touch any hot parts (such as heat sink) during operation. Only
the LCD panel and the DC switch can safely be touched at any time.
Only qualified personnel can change the country setting.
Unauthorized alteration of the country setting 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; and
wear a grounding wristband before touching any connectors.
Batteries
Batteries deliver electric power, resulting in burns or a fire hazard when
they are short circuited, or wrongly installed.
Lethal voltages are present in the battery terminals and cables in the
inverter. Severe injuries or death may occur if the cables and terminals
in the inverter are touched.

1 Safety User Manual
4
Provide sufficient ventilation for lead-acid battery systems 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 module;
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.
Energy Meter
Lethal voltages and danger to life due to electric shock!
Only use the Energy Meter in a dry environment and keep it away
from liquids.
Install the Energy Meter in the switch cabinet only and ensure that the
connection areas for the line and the neutral conductors are behind
an insulting cover or have contact protection.
Install an external disconnect switch between the Energy Meter and
the grid-connected point. The external disconnector must be close to
the Energy Meter and easily accessible.
Disconnect the Energy Meter from voltage sources before cleaning.
The Energy Meter must be cleaned with a dry cloth only.

User Manual 1 Safety
5
Fire hazard
If a fuse is missing or incorrect, a fire may be caused when a fault
occurs. This can result in death or serious injury.
Protect the line conductors of the Energy Meter with a fuse or a
main/selective circuit breaker, max. 100 A for single-phase meter and
max. 65 A for three-phase meter.
Skills of Qualified Personnel
Qualified personnel must have the following skills:
training in the installation and commissioning of the electrical system, as well
as the dealing with hazards;
knowledge of the manual and other related documents; and
knowledge of the local regulations and directives.

6
2 System Solution
The inverter must only be operated with PV strings of protection class
II in accordance with IEC 61730, application class A. It is not permitted
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 covered by warranty.
Any use other than that described in this document is not permitted.
For the TT utility grid, the N line voltage to ground must be 30 V or less.
SH3K6/SH4K6 is a single-phase hybrid inverter applicable to on-grid PV
systems. With the integrated Energy Management System (EMS), it can control
and optimize the energy flow in order to increase the self-consumption of the
system.
Inverter
The type description is as follows:
SH 3K6
Code of power level
Code of Sungrow hybrid inverter
Tab. 2-1 Power Level Description
Type
Nominal Output Power
Nominal Grid Voltage
SH3K6
3680 W
230 Vac (single phase)
SH4K6
4600 W

User Manual 2 System Solution
7
The following figure shows the inverter appearance, which is for reference only.
The actual product that you receive may differ.
10
Type
S/N A**********
SH3K6
PV Input
AC Input and output
WWW.SUNGROWPOWER.COM MADE IN CHINA
Grid Monitoring: VDE 0126-1-1 VDE-AR-N 4105
Battery
xxxxxxxxx
Password **********
600V
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SUNGROW POWER SUPPLY CO., LTD.
12
34
6 7
9
8
5
Fig. 2-1 Inverter Appearance
No.
Name
Description
1
AC-Grid
AC terminal to the utility grid.
2
Backup ctrl
Reserved.
3
PV terminals
Positive and negative DC input connectors.
4
DC switch
To disconnect the DC current safely.
5
Wi-Fi terminal
To connect the Wi-Fi module (optional).
6
Battery connection
BAT+ and BAT-
7
Communication
connection
RS485, Ethernet, CAN, AI, DI and DO.
8
Second PE terminal
For reliable grounding.
9
LCD panel
The display and four buttons can be used to
access current operating data or change
inverter settings.
10
Nameplate
Clearly identify the product, including the SN,
password, technical data, certifications, etc.

2 System Solution User Manual
8
The following figure shows the dimensions of the inverter.
D (170)
W (457)
H (515)
Fig. 2-2 Outline Dimensions (unit: mm)
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
LCD
screen
Display and access current operating data or change inverter
settings.
2
Indicator
Green and red can be indicated via the indicator, from which
user can know the current status. For detailed definition, see
Tab. 7-3.
3
Buttons
View or set parameters via the buttons. For detailed functions,
see Tab. 7-1.
Energy Meter
The Sungrow 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.

User Manual 2 System Solution
9
Single-phase Energy Meter and its terminals are shown in the following figure.
A
B
E
D
C
Designation
Description
A
1, 4
For the 1-phase sensor
B
2, 5
2 is for RS485-A
5 is for RS485-B
C
PWR/COM
Stead on: the Energy Meter is powered on.
Flashing: the Energy Meter is communicating with the
inverter.
Off: no power supply to the meter.
1000 imp/kWh
Glowing: 1000 impulse per kWh active power is
detected.
Off: no active power is detected.
D
3, 6
3 is for the line conductor
6 is for the neutral conductor
E
/
CT clamp for the 1-phase sensor
The dimensions of single-phase Energy Meter are shown as below.
Front view Side view
18 65
117
35
45.3
Fig. 2-4 Single-phase Energy Meter Dimensions (unit: mm)

2 System Solution User Manual
10
Three-phase Energy Meter and its terminals are shown in the following figure.
A
D
B
C
SET
E
F
Designation
Specification
A
21, 22
RS485 communication terminals
B
LCD screen
Display active energy and reactive energy, etc.
C
L1, L2, L3
Input terminals from grid side
D
L1’, L2’, L3’,
Output terminals to load side
E
N
Neutral terminal
F
Keys
Set key, up key, down key and enter key
The dimensions of three-phase Energy Meter are shown as below.
Front view Side view
126.5
88.2
69.5
31.5
45.4
19.5
Fig. 2-5 Three-phase Energy Meter Dimensions (unit: mm)

User Manual 2 System Solution
11
The single-phase Energy Meter and the three-phase Energy Meter
are alternative in the delivery. The Energy Meter figures in this
document have been created for the three-phase Energy Meter
unless otherwise specified.
More detailed information on the Energy Meter can be found in the
respective Quick Installation Guide.
2.1 PV Energy Storage System (PV ESS)
With a battery module for the immediate storage of energy, the conventional PV
system can be upgraded to be a PV ESS.
A B C D
E
Export power Output power PV power
Load power
F
Battery power
S
E
T
Fig. 2-6 PV Energy Storage System (PV ESS)
Tab. 2-2 System Compositions
Item
Description
Remark
A
Utility grid
Grid grounding system types: TT, TN
B
Sungrow single-phase or
three-phase Energy Meter
Measures the export power and
communicates with the inverter via the
RS485 port.
C
Inverter
SH3K6 / SH4K6.
D
PV strings
Monocrystalline silicon, polycrystalline
silicon, and thin-film without grounding.
E
Household load
Devices that consume energy.
F
Battery (optional)
A Li-ion battery or a lead-acid battery.
Energy Management during Daytime
The energy management system (EMS) works in self-consumption by default.
The PV power will go to the house first, then the battery. Then if the battery is
fully charged the excess will go to the grid, the export power should not be more
than the limit value set in commissioning.

2 System Solution User Manual
12
If the PV power is less than the load power, the battery will discharge and
provide the energy shortfall. The inverter will draw power from the mains if the
power from the PV and battery is less than the load power.
Day
Loads consumption
PV power generation
No current
With current
Charging
Discharging
S
E
T
Energy Management during Night
The battery discharges to provide energy to loads. If the battery is empty or
there is not enough power from the battery system to supply active loads, the
unmet power will be supplied by the grid.
If the Energy Meter is abnormal or not equipped:
the inverter can run normally;
the battery can be charged, but not allowed to discharge;
the export power setting on the LCD screen will be ineffective;
the DO function of optimized mode will be disabled.