Sungrow SC50HV User manual

SC50_60_75HV-UEN-V12-202006 Version: 1.2
User Manual
SC50/60/75HV
Power Conversion System
(PCS)

I
About This Manual
Applicability
This manual is applicable to the PCS types:
SC50HV
SC60HV
SC75HV
Target Group
This manual is intended for:
qualified personnel who are responsible for the installation and
commissioning of the PCS
PCS owners who will have the ability to interact with the PCS via the LCD
display.
How to Use the Manual
Read the manual and other related documents before any work on the PCS 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 Explanation
Important instructions contained in this manual should be followed during
installation, operation and maintenance of the PCS. And they will be highlighted
by the following symbols.

II
DANGER indicates a hazard with a high level of risk which, if not
avoided, will result in death or serious injury.
WARNING indicates a hazard with a medium level of risk which, if not
avoided, could result in death or serious injury.
CAUTION indicates a hazard with a low level of risk which, if not
avoided, could result in minor or moderate injury.
NOTICE indicates a situation which, if not avoided, could result in
equipment or property damage.
NOTE indicates additional information, emphasized contents or tips
to help you solve problems or save time.
Symbols on the PCS Body
The symbols below are pasted on the PCS. Make sure to read the following
symbols and fully understand them before installing the equipment.

III

IV
Contents
About This Manual.....................................................................I
1Safety Instructions..............................................................1
1.1 Intended Usage .........................................................................1
1.2 Important Safety Instructions .....................................................2
1.3 During Operation........................................................................3
1.3.1 Manuals .................................................................................... 3
1.3.2 Personnel.................................................................................. 3
1.3.3 Markings on the PCS ................................................................ 3
1.3.4 Safety Warning Signs................................................................ 4
1.3.5 Storage Battery Protection ........................................................ 4
1.3.6 Live Line Measurement............................................................. 4
1.3.7 Measuring Instrument................................................................ 4
1.3.8 ESD Protection.......................................................................... 5
1.3.9 Moisture Protection................................................................... 5
1.3.10 Maintenance and Service........................................................ 5
1.3.11 Disposal of Waste ................................................................... 6
1.3.12 Others..................................................................................... 6
2Product Introduction...........................................................7
2.1 System Introduction...................................................................7
2.2 Product Description....................................................................7
2.2.1 Model Description ..................................................................... 7
2.2.2 Product Appearance.................................................................. 8
2.2.3 Dimensions of PCS................................................................... 9
2.2.4 LED Indicator Panel .................................................................. 9
2.2.5 Battery Switch......................................................................... 10
2.3 Technical Description...............................................................10
2.3.1 Principle Description ............................................................... 10
2.3.2 Functions Description...............................................................11
2.3.3 Mode Description.....................................................................11

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3Installation Flow................................................................13
4Unpacking and Storage....................................................15
4.1 Unpacking and Inspection.......................................................15
4.2 Identifying PCS........................................................................15
4.3 Delivery Contents....................................................................17
4.4 Storage of PCS .......................................................................17
5Installation..........................................................................19
5.1 Installation Site Selection........................................................19
5.2 Moving PCS to Installation Site...............................................22
5.3 Installation Tools...................................................................... 22
5.4 Installing the PCS....................................................................23
5.4.1 Installing to Metal Frame......................................................... 24
5.4.2 Installing the PCS to the wall................................................... 25
6Electrical Connection .......................................................27
6.1 Terminals Description..............................................................27
6.2 DC fuse and AC circuit breaker requirements .........................28
6.3 Grounding the PCS.................................................................29
6.4 AC Connection........................................................................29
6.4.1 Requirements for multi-PCS parallel connection .....................29
6.4.2 AC Cable Requirements.......................................................... 30
6.4.3 Connection Procedure.............................................................31
6.5 Internal PE Cable Connection.................................................33
6.5.1 Internal PE Cable Requirements.............................................33
6.5.2 Connection Procedure.............................................................33
6.6 Battery Connection.................................................................. 34
6.6.1 DC Cable Requirements.......................................................... 35
6.6.2 Connection Procedure.............................................................35
6.7 Communication Connection ....................................................37
6.8 DC parallel connection ............................................................38
7Commissioning .................................................................40
7.1 Inspection before Commissioning ...........................................40
7.2 Commissioning Procedure ......................................................40

VI
8iSolarCloud APP................................................................42
8.1 Brief Introduction......................................................................42
8.2 Download and Install................................................................42
8.3 Menu........................................................................................43
8.4 Login........................................................................................43
8.4.1 Requirements.......................................................................... 43
8.4.2 Login Steps............................................................................. 44
8.5 Home page..............................................................................45
8.6 Running Information.................................................................47
8.7 History Record.........................................................................48
8.7.1 Alarm Records......................................................................... 48
8.7.2 Charge and Discharge Records.............................................. 49
8.7.3 Event Records......................................................................... 50
8.8 More.........................................................................................51
8.8.1 Boot / Hot standby / Shutdown................................................ 52
8.8.2 System parameter................................................................... 52
8.8.3 Communication parameters .................................................... 53
8.8.4 Operation parameters ............................................................. 54
8.8.5 Charging & Discharging management..................................... 56
8.8.6 Download the log .................................................................... 56
8.8.7 Firmware update..................................................................... 57
8.9 Configuring BMS Data Sources...............................................57
9Disconnecting, Dismantling and Disposing the PCS ...60
9.1 Disconnecting the PCS............................................................60
9.2 Dismantling the PCS................................................................61
9.3 Disposing the PCS...................................................................61
10 Troubleshooting and Maintenance..................................63
10.1 Troubleshooting.......................................................................63
10.2 Maintenance ............................................................................66
10.2.1 Routine Maintenance ............................................................ 66
10.2.2 Maintenance Instruction........................................................ 66
11 Appendix............................................................................69

VII
11.1 Technical Data.........................................................................69
11.2 Exclusion of Liability................................................................70
11.3 Contact Information.................................................................72

1
1 Safety Instructions
1.1 Intended Usage
SC50/60/75HV is a three-phase grid-connected PCS applicable to energy
storage systems.
The charging and discharging system with SC50/60/75HV is shown below:
C
BA
D
Fig. 1-1 Energy storage system
No.
Name
A
Energy storage batteries (lead-acid battery, lithium battery and etc.)
B
PCS for energy storage system
C
Utility grid (Applicable grid: TN, TT, IT)
D
Loads

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Installation described in this section must be strictly observed. Any
other or additional installation other than the described installation is
not permitted.
Installation and connections other than the contents described in this
section may lead to device damages and void warranty claims.
1.2 Important Safety Instructions
This section introduces the safety instructions during operation of the PCS.
Read the safety instructions in this section before PCS operation. Please also
respect all warnings, instructions, and cautions and respective chapter before
operation.
Shock Hazard!
Death resulting from burns and electric shock upon touching the PCS live
components.
Do not touch the live components of the PCS or the utility grid.
Observe all safety regulations.
Shock hazards inside the PCS!
Note and respect the warning labels in the product.
Respect all safety instructions in this manual and other related
document.
Electric shock or fire due to device damage or system fault!
Visual check if there is device damage or other potential dangers before
operation.
Check if other external devices or circuit connections are safe.
Operate the device only when it is safe to do so.

3
Follow the steps in this manual strictly to power the device after
maintenance and troubleshooting.
1.3 During Operation
1.3.1 Manuals
Very important information about the PCS operation is contained in this manual.
All the descriptions in this manual, especially those safety-related items, must
be complied with.
Operate the PCS by strictly following the description in this manual. Device
damage, personal injury or property loss may follow if otherwise.
These manual and other related documents should be available for relevant
persons at all times.
1.3.2 Personnel
Only professional electrician or personnel with professional training can
operate the PCS;
Operator should be familiar with the construction and working principle of the
whole energy storage system;
Operator should be familiar with the PCS Operation Manual and Installation
Manual;
Operator should be familiar with the country/local specific standards.
1.3.3 Markings on the PCS
PCS enclosure and interior contains important warning and safety
information. Do not tear or damage it.
Nameplates located in the side of the cabinet contain very important
parameter information. Do not tear or damage them.
All safety instructions, warning labels and nameplate on the PCS body
must be clearly visible;
Replace the markings once they damaged or unclear.

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1.3.4 Safety Warning Signs
Please respect the followings during installation, daily maintenance or
troubleshooting of the PCS:
An obvious marking should be placed in the PCS upstream and downstream
to keep the switch from accidental reconnection;
A temporary warning sign or barrier must be posted around the operation
area;
Remove the door keys and keep them appropriately after maintenance or
troubleshooting work is finished.
1.3.5 Storage Battery Protection
High Voltages exist between positive and negative polarities of the storage
batteries. Electrical shock or life risk may occur by accidental touch.
High voltages exist between the positive and negative polarity of the
storage batteries!
Ensure the PCS and storage batteries are completely disconnected
during device maintenance.
Place warning labels in the disconnection place to avoid accidental
reconnection.
1.3.6 Live Line Measurement
High voltages are present in the device. Death resulting from burning and
electric shock upon touching the live components of the PCS. During live
line measurement,
use suitable protective equipment , for example dielectric gloves, and
accompany by other persons.
1.3.7 Measuring Instrument
Appropriate measurement instruments are recommended during the electrical
connection, commissioning and operation of the PCS.

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Use high quality instruments that can meet the field requirements.
Ensure the safety and correctness of instruments connection and use
to avoid electric arc.
1.3.8 ESD Protection
PCS may be damaged irreversibly by electrostatic discharge (ESD) at its
components.
During the operation of the PCS, please observe all the ESD-related
safety regulations, for example, wear antistatic wrist strap.
Avoid unnecessary touch of the printed circuit board or other sensitive
components!
1.3.9 Moisture Protection
Moisture can damage the PCS. For normal operation of the PCS, please
respect the followings:
Do not open the PCS doors when relative humidity is higher than 95%.
Do not maintain or service the PCS in rainy or other bad days.
1.3.10 Maintenance and Service
Wait at least 5 minutes after the PCS stops and then open the PCS front
door to maintain or service.
Before any service work, observe the followings.
Ensure that the PCS will not be started accidentally.
Verify that the PCS interior is discharged completely with a multimeter.
Necessary ground and short circuit connect.
Cover the adjacent electrical components with insulation cloth during
operation.

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Ensure the clearness of the safety route during maintenance and service
work.
1.3.11 Disposal of Waste
When the PCS is end of life, it cannot be disposed of together with household
wastes. Please contact the local authorized collection point.
1.3.12 Others
Please observe country/local-specific standards and regulations.
Only service the device when it is voltage-free.
Never work alone when servicing this device. Two persons are required
until the PCS is properly shut down and de-energized.
Other protection measures:
Use suitable protective equipment (for example safety goggles, earplugs,
dielectric gloves, insulating shoes) when maintaining or servicing the device.
Emergency aid should be prepared beforehand since the PCS is always
installed far away from the downtown area.
Every possible auxiliary method should be taken to ensure the safety of
personnel and device.
All the pictures and descriptions in this manual apply to the standard
configuration of the PCS. The actual product you receive may differ.
Should you have any specific requirements, please inform us.
This manual may not cover all possible situations. Should a specific
problem occur that is not explained in this manual, please contact
Sungrow.

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2 Product Introduction
2.1 System Introduction
Electric power system consists of the following six parts: development,
generation, transmission, distribution, consumption and storage. Among which,
the energy storage system is important to realize the following functions:
demand side energy management, substation grid support, load balance,
renewable energy application etc.
SC-series PCS are dedicated to charging/discharging the storage battery and
providing intermediate link between the grid and the storage battery in different
occasions (grid-connected system, islanded system or hybrid system).
Smart grid system with PCS for energy storage system is shown in following
figure.
Power Plant
Wind Power Plant
PV Power
Plant
Charge
EV Charging
Station
Energy Storage
Device
Power Load
PCS
Discharge
Fig. 2-1 Smart grid and energy storage system
2.2 Product Description
2.2.1 Model Description
The model description is as follows (take SC50HV as example):

2 Product Introduction User Manual
8
SC 50 HV
High voltage input
Code of power level
Code of PCS (Power Conversion System)
Tab. 2-1 Power description
2.2.2 Product Appearance
7
1
4
2
3
5
6
10
9
8
Fig. 2-2 Product Components Description
*Image shown here is for reference only. Actual product you receive may differ.
Item
Name
Description
1
LED indicator panel
HMI interface to indicate the present working
state of the PCS.
2
Air outlet
Controlled forced-air cooling method. Ensures
proper ventilation.
3
Handles
Handles are designed for transporting,
installing and disassembling the PCS
4
Cover plate of the fan
The fan is located on the back of the cover
plate and used for the forced cooling of the
PCS
Model
AC output power
Nominal AC voltage
SC50HV
55 kVA @ 45 ℃/ 50 kVA @ 50 ℃
400 V
SC60HV
66 kVA @ 45 ℃/ 60 kVA @ 50 ℃
480V
SC75HV
82.5 kVA @ 45 ℃/ 75 kVA @ 50 ℃
600V

User Manual 2 Product Introduction
9
Item
Name
Description
5
AC switch
To disconnect the PCS from the AC output
safely
6
Second PE Terminals
Second protective earth terminals as specified
in EN 50178.
7
Hanger
Hang the PCS on the bracket.
8
Emergency stop
button
Stop the PCS in emergency by pressing this
button down
9
BAT. Switch
To disconnect the PCS from the battery safely
10
Electrical connection
area
Includes DC terminal, AC terminal and
communication terminal.
2.2.3 Dimensions of PCS
858mm/33.8in
600mm/23.6in 278mm/10.9in
800mm/31.5in
Fig. 2-3 Outline Dimensions of PCS
2.2.4 LED Indicator Panel
As an HMI, the LED indicator panel on the PCS front panel indicates the
present working state of the PCS.
Tab. 2-2 LED indicator description
LED
indicator
LED state
Definition
Steady Blue
The device is connected to the grid and
operating normally.
Flashing blue
(fast)
The Bluetooth communication is
connected and there is data
communication. No fault occurs.

2 Product Introduction User Manual
10
LED
indicator
LED state
Definition
Flashing blue
(slow)
The DC or AC side is powered on and the
device is in standby or startup state (not
feeding power into the grid).
Steady Red
A fault occurs and the device cannot
connect to the grid
Flashing Red
The Bluetooth communication is
connected and there is data
communication.Fault occurs.
OFF
Both the AC and DC sides are powered
down.
2.2.5 Battery Switch
Battery switch is designed for safely disconnecting the DC input current if
required.
The PCS works automatically when input and output meet the requirements.
Rotating battery switch to the “OFF”position will immediately cut off the flow of
DC current.
2.3 Technical Description
2.3.1 Principle Description
Inversion circuit converts DC power into AC power, which will be fed into the
utility grid via four core terminals. Protective circuits are designed to guarantee
PCS safe operation and human safety.
DC switch is integrated for safe disconnection of DC current. The PCS provides
standard interface RS485 for communication. PCS are also provided running
records display and parameters configuration via iSolarCloud APP.
L1
PE
L2
L3
AC SPD
Inverter Circuit
(DC/AC)
AC
Filter AC Relays AC EMI Filter
AC
Switch
DC
DC Switch
DC EMI
Filter
DC SPD DC Bus
Fig. 2-4 Main Circuit Diagram