Sungrow SD175HV User manual

SSDD117755HHVVDDCC//DDCC CCoonnvveerrtteerrUUsseerr
MMaannuuaallSSDD117755HHVV--UUEENN--VVeerr1111--
220022220033
SD175HV-UEN-Ver11-202203
SD175HV
DDCC//DDCC CCoonnvveerrtteerr
UUsseerr MMaannuuaall

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 ENERGY STORAGE TECHNOLOGY 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 describes the product information, guidelines for installation, opera-
tion and maintenance. The manual cannot include complete information about the en-
ergy storage system. You can get additional information about other devices at wwwwww..
ssuunnggrroowwppoowweerr..ccoomm or on the webpage of the respective component manufacturer.
VVaalliiddiittyy
This manual is valid for the following converter type:
•SD175HV DC/DC converter
They will be referred to as “converter” hereinafter unless otherwise specified.
TTaarrggeett GGrroouupp
This manual is intended for converter owners who will have the ability to interact with the
converter and qualified personnel who are responsible for the installation and commis-
sioning of the converter. 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 con-
verter. 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 converter may be subject to change. The
latest manual can be found at ssuuppppoorrtt..ssuunnggrroowwppoowweerr..ccoomm.
SSyymmbboollss
To ensure the safety of the users and their properties when they use the product and to
make sure that the product is used in an optimal and efficient manner, this manual pro-
vides users with the relevant safety information which is marked by the following
symbols.
Below is a list of symbols that are used in this manual. Review them carefully to make
better use of this manual.
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 min-
or 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 Storage Battery............................................................................................ 1
1.2 Converter..................................................................................................... 2
1.3 Skills of Qualified Personnel.......................................................................... 3
2 Product Description .................................................................................... 4
2.1 Function Description .................................................................................... 4
2.1.1 Intended Usage 1 ............................................................................... 4
2.1.2 Intended Usage 2 ............................................................................... 5
2.2 Product Introduction..................................................................................... 5
2.2.1 Type Description................................................................................. 5
2.2.2 Appearance........................................................................................ 6
2.2.3 Dimensions and Weight...................................................................... 7
2.2.4 LED Indicator Panel ............................................................................ 7
2.2.5 DC Switch........................................................................................... 8
2.2.6 Emergency Stop Button...................................................................... 9
2.3 Circuit Diagram ............................................................................................ 9
2.4 Function Description .................................................................................. 10
3 Unpacking and Storage ........................................................................... 11
3.1 Unpacking and Inspection.......................................................................... 11
3.2 Identifying the Converter ............................................................................ 11
3.3 Converter Storage...................................................................................... 13
4 Mechanical Mounting .............................................................................. 14
4.1 Safety during Mounting .............................................................................. 14
4.2 Location Selection...................................................................................... 14
4.2.1 Installation Environment Requirements ............................................. 14
4.2.2 Carrier Requirements........................................................................ 15
4.2.3 Installation Angle Requirements ........................................................ 15
4.2.4 Installation Clearance Requirements ................................................. 15
4.3 Installation Tools......................................................................................... 15

VI
4.4 Moving the Converter................................................................................. 16
4.5 Preparation before Mounting...................................................................... 17
5 Electrical Connection ............................................................................... 19
5.1 Safety Instructions...................................................................................... 19
5.2 Terminal Description................................................................................... 19
5.3 Electrical Connection Overview .................................................................. 20
5.4 Additional Grounding Connection ............................................................... 22
5.4.1 Additional Grounding Requirements.................................................. 22
5.4.2 Connection Procedure...................................................................... 22
5.5 DC Cable Connection................................................................................. 23
5.6 PV Connector Connection .......................................................................... 25
5.7 Ethernet Connection .................................................................................. 27
5.8 Communication Connection ....................................................................... 28
6 Commissioning ........................................................................................... 33
6.1 Inspection before Commissioning............................................................... 33
6.2 Commissioning Procedure ......................................................................... 33
7 iSolarCloud APP ......................................................................................... 34
7.1 Brief Introduction........................................................................................ 34
7.2 Download and Install.................................................................................. 34
7.3 Login.......................................................................................................... 35
7.3.1 Requirements................................................................................... 35
7.3.2 Login Steps ...................................................................................... 35
7.4 Home page................................................................................................ 36
7.5 Running Information................................................................................... 39
7.6 History Record ........................................................................................... 39
7.6.1 Fault Alarm Records ......................................................................... 40
7.6.2 Power Yields Records....................................................................... 41
7.6.3 Event Records.................................................................................. 42
7.7 More.......................................................................................................... 43
7.7.1 Boot ................................................................................................. 43
7.7.2 Hot Standby ..................................................................................... 43
7.7.3 Shutdown......................................................................................... 44
7.7.4 System Parameters .......................................................................... 44
7.7.5 Settings............................................................................................ 45
8 System Decommissioning ...................................................................... 54
8.1 Disconnecting the Converter ...................................................................... 54

VII
8.2 Dismantling the Converter .......................................................................... 54
8.3 Disposal of the Converter ........................................................................... 54
9 Troubleshooting and Maintenance ...................................................... 56
9.1 Troubleshooting ......................................................................................... 56
9.2 Maintenance.............................................................................................. 57
10 Appendix .................................................................................................... 59
10.1 Technical Data ......................................................................................... 59
10.2 Quality Assurance .................................................................................... 60
10.3 Contact Information ................................................................................. 60

1
1Safety
The device has been designed for the power industry. You need to follow the applicable
safety rules during its installation, trial operation, operations and maintenance. Incorrect
operation or work may cause:
•Injury or death to the operator or a third party;
•Damage to the device and other properties.
Follow all the safety guidelines stated in this manual strictly to protect yourself from any
danger and harm.
The precautions to take during the operations are described in details in the correspond-
ing chapters.
•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 Storage Battery
For battery storage power stations, the voltage between the positive and negative elec-
trodes of the storage battery pack is very high. If the operators touch it accidentally, they
may get an electric shock which can be fatal.
High voltage between the positive and negative electrodes of the storage bat-
tery pack that can be fatal!
•When the equipment is under maintenance, make sure that the battery sto-
rage converter is not connected to the storage battery pack.
•Set a warning sign at the point of disconnection to make sure that they will
not be accidentally reconnected.

2
1.2 Converter
Electric shock risk!
•Make sure that the external casing of the chassis is intact and closed to keep
the operators and their properties safe from harm or injury. Please do not
open the external casing of the converter when the converter is working or
connected, otherwise Sungrow Power Supply Co., Ltd. shall not be held liable
for related consequences.
Risk of damage to converter or personal injury!
•Do not plug in or unplug the DC connector when the converter is working.
•Even when the converter is disconnected, the voltage inside is still high. Wait
at least five minutes before you handle the converter.
All safety instructions, warning labels, and nameplate on the converter:
•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 heat sink) during operation. Only the DC
switch can safely be touched at any time.
The parameters of the converter must be configured by qualified technical per-
sonnel according to the standards of the local power grid.
Do not touch the printed circuit board or other electrostatic sensitive compo-
nents as you may damage the device.
•Do not touch the circuit board unnecessarily.
•Observe the regulations to protect against electrostatic and wear an anti-
static wrist strap.
1 Safety User Manual

3
WWaarrnniinngg LLaabbeell
SSyymmbbooll EExxppllaannaattiioonn
Danger to life due to high voltages!
Only qualified personnel can open and service the converter.
Disconnect the converter from all the external power sources be-
fore service!
Do not touch live parts until 5minutes after disconnection from the
power sources.
There is a danger from a hot surface that may exceed 60°C.
Check the user manual before service!
1.3 Skills of Qualified Personnel
All installations should be performed by technical personnel. They should have:
•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.
•Knowledge of the local regulations and directives.
User Manual 1 Safety

4
2Product Description
2.1 Function Description
2.1.1 Intended Usage 1
The DC converter is used to convert the DC power from the battery into DC power that
the inverter can accept for inversion. It can also convert the DC power output from the
converter into DC power that can be used to charge the battery.
FFiigguurree 22--11 Inended Usage1
Note 1: *The image shown here is for reference only. The actual product you receive
may differ.
IItteemm DDeessccrriippttiioonn
A PV strings
B Power conversion equipment such as inverters and battery storage
converters
C Transformer
D Utility grid or Load
E Battery
FConverter

5
2.1.2 Intended Usage 2
FFiigguurree 22--22 Intended Usage 2
Note 1: *The image shown here is for reference only. The actual product you receive
may differ.
IItteemm DDeessccrriippttiioonn
A Battery
BConverter
CPower conversion equipment such as inverters and battery storage
converters
D Transformer
E Utility grid or Load
2.2 Product Introduction
2.2.1 Type Description
The device type description is as follows:
User Manual 2 Product Description

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Table 2-1 Power Level Description
TTyyppee NNoommiinnaall OOuuttppuutt PPoowweerr NNoommiinnaall GGrriidd VVoollttaaggee
SD125HV 125kW 169kW
The device type can be found on the nameplate attached to the side of the converter.
For details, refer to "IIddeennttiiffyyiinngg tthhee CCoonnvveerrtteerr"”.
2.2.2 Appearance
The appearance of the converter is shown as follow.
FFiigguurree 22--33 Converter appearance
*The image shown here is for reference only. The actual product you receive may differ.
NNoo.. NNaammee DDeessccrriippttiioonn
1 DC Switch To safely cut off the electrical connection between the inver-
ter and battery.
2 LED indicator Indicates the present working state of the converter.
3Wiring area DC switches, and communication terminals.
4Grounding
terminal To ground the electrical protection of the equipment.
2 Product Description User Manual

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NNoo.. NNaammee DDeessccrriippttiioonn
5Auxiliary
power switch
To safely cut off the electrical connection between the con-
verter and external device.
6Emergency
Stop Button
Only for emergencies. Press this button to immediately dis-
connect the converter from the upstream and downstream
equipment.
2.2.3 Dimensions and Weight
FFiigguurree 22--44 Dimensions of the Converter (in mm)
WWeeiigghhtt ((kkgg))
75kg
2.2.4 LED Indicator Panel
As an HMI, the LED indicator panel on the converter bottom panel indicates the present
working state of the converter.
Table 2-2 LED indicator description
LLEEDD iinn--
ddiiccaattoorr LLEEDD ssttaattee DDeeffiinnttiittiioonn
Blue
ON The device is connected to the grid and oper-
ating normally.
Fast blink
(Period: 0.2s)
The Bluetooth communication is connected
and there is data communication.
No system fault occurs.
User Manual 2 Product Description

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LLEEDD iinn--
ddiiccaattoorr LLEEDD ssttaattee DDeeffiinnttiittiioonn
Slow flash
(Period: 2s) The device is in standby or startup state (not
feeding power into the grid).
Red
ON A fault occurred.（The converter is power off
immediately.）
Twinkling
(Period: 0.2s)
The Bluetooth communication is connected
and there is data communication.
System fault occurs.
OFF
OFF The converter is powered off.
2.2.5 DC Switch
Make sure the load switch is open before you power on the converter. Do not
close the load switch when there is electricity in the converter. Do not open the
load switch when the converter is running.
The converter is equipped with two DC switches, which are marked with “DC Switch 1"
and "DC Switch 2" using silk-screen printing.
“DC Switch 1” is used to safely cut off the electrical connection between the conver-
ter and inverter.
“DC Switch 2” is the auxiliary power supply switch that can safely disconnect the aux-
iliary power supply side power of the DC converter.
2 Product Description User Manual

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FFiigguurree 22--55 Bottom view
2.2.6 Emergency Stop Button
Press the emergency stop button to quickly stop the machine in an emergency. The po-
sition is shown in the figure below.
FFiigguurree 22--66 Bottom view
Before maintenance, press the emergency stop button to prevent the machine
from being connected to the power supply due to background misoperation.
2.3 Circuit Diagram
The converter can convert the DC current from the battery into DC current that can be
accepted by power conversion equipment such as inverters and battery storage con-
verters. This is used to perform the power conversion. It is also be used to convert the
DC power output from the power conversion devices into DC power can be used to
charge the battery. The specific conversion direction is determined by the state of the
battery and can be controlled by the monitoring system.
Design principles of the converters are as follows:
User Manual 2 Product Description

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FFiigguurree 22--77 Circuit diagram
2.4 Function Description
The converter is equipped with the following functions:
CCoonnvveerrssiioonn
Convert the DC power in the converter or battery into DC power that can be accepted
by the equipment on the other side.
DDaattaa ssttoorraaggee aanndd ddiissppllaayy
The converter stores system information including operation information and fault re-
cords. The system information can be uploaded to smartphones and host machine via
communication methods like Bluetooth and RS485. Users can view the information
using the iSolarCloud app or from the interface of the host machine.
PPaarraammeetteerr ccoonnffiigguurraattiioonn
The converter provides various parameter configurations to satisfy different require-
ments as well as to tune its operations for optimal performance. When the Bluetooth or
RS485 communication is successfully established, users can access the configuration
portal of these parameters using the iSolarCloud app or the interface of the host ma-
chine to configure the parameters.
CCoommmmuunniiccaattiioonn iinntteerrffaaccee
The converter has a standard RS485 port which is used to connect to the monitoring
system of the power station. The converter is also embedded with a Bluetooth commu-
nication module which can be used to exchange data with smartphones or tablets.
PPrrootteeccttiioonn
The converter comes with protective functions which include reverse connection pro-
tection, overvoltage protection, insulation detection and overheat protection.
2 Product Description User Manual