Sungrow SC1200UD User manual

SC1200UD/SC1375UD/SC1575UD/
SC1725UD/SC2000UD/SC2500UDPower Conversion
System (PCS)User ManualSC1200_1375_1575_1725_2000_
2500UD-UEN-Ver110-202306M-H-002047
User Manual
Power Conversion System (PCS)
SC1200UD/SC1375UD/SC1575UD/SC1725UD/SC2000UD/
SC2500UD
SC1200_1375_1575_1725_2000_2500UD-UEN-Ver110-202306

I
Contents
1 About This Manual ...........................................................................................1
1.1 Validity...........................................................................................................1
1.2 Contents........................................................................................................1
1.3 Target Group..................................................................................................2
1.4 Symbol Explanations ......................................................................................2
1.5 How to Use this Manual ..................................................................................3
2 Safety Instructions ............................................................................................4
2.1 Intended Usage..............................................................................................4
2.2 Important Safety Instructions ...........................................................................5
2.3 Manuals.........................................................................................................7
2.4 Personnel ......................................................................................................7
2.5 Storage Battery Protection ..............................................................................7
2.6 Ground Fault Protection ..................................................................................8
2.7 Device Installation ..........................................................................................8
2.8 Electrical Connection ......................................................................................8
2.9 Live Line Measurement...................................................................................9
2.10 Measuring Instrument ...................................................................................9
2.11 Volt-free Operations ....................................................................................10
2.12 ESD Protection...........................................................................................10
2.13 Web Parameter Setting ...............................................................................10
2.14 Sand and Moisture Protection......................................................................10
2.15 Moisture protection ..................................................................................... 11
2.16 Markings on the PCS .................................................................................. 11
2.17 Safety Warning Signs.................................................................................. 11
2.18 Emergency Escape Route........................................................................... 11
2.19 Maintenance and Service ............................................................................12
2.20 Disposal of Waste.......................................................................................12
2.21 Others .......................................................................................................12
3 Product Description ........................................................................................14
3.1 Product Introduction......................................................................................14
3.2 External Design of the PCS ...........................................................................14

II
3.2.1 Appearance........................................................................................14
3.2.2 Mechanical Data .................................................................................17
3.2.3 Ventilation Design ...............................................................................18
3.3 Internal Design of PCS..................................................................................18
3.3.1 Internal Components ...........................................................................18
3.3.2 Overview of Operation Switches...........................................................21
3.3.3 Operations on DC Load Switch&AC Circuit Breaker...............................22
3.3.4 Cable Inlet/Outlet Design .....................................................................24
3.3.5 Remote control function.......................................................................24
4 Delivery ............................................................................................................27
4.1 Scope of Delivery .........................................................................................27
4.2 Identifying PCS ............................................................................................27
4.3 Checking for Transport Damage ....................................................................28
4.4 Storage........................................................................................................29
5 Mechanical Mounting .....................................................................................30
5.1 Installation Site Selection ..............................................................................30
5.2 Installation Environment Design.....................................................................30
5.2.1 Floor ..................................................................................................30
5.2.2 Clearance Space ................................................................................31
5.2.3 Ventilation Requirements .....................................................................32
5.2.4 Cable Trench ......................................................................................33
5.2.5 Other Requirements ............................................................................33
5.3 Wiring Requirements ....................................................................................34
5.4 Cable Protection...........................................................................................34
5.5 Transport and Shipping.................................................................................35
5.5.1 Attentions ...........................................................................................35
5.5.2 Moving the PCS ..................................................................................35
5.6 Field Installation ...........................................................................................39
5.6.1 Unpacking the PCS .............................................................................40
5.6.2 Checking before Fixing........................................................................40
5.6.3 Fixing the PCS....................................................................................41
6 Electrical Connection .....................................................................................42
6.1 Safety Instructions........................................................................................42
6.1.1 General Rules.....................................................................................42
6.1.2 Five Safety Rules................................................................................43
6.2 Installation Tools...........................................................................................44

III
6.3 Parts for Cabling...........................................................................................44
6.3.1 Copper Wire Connection......................................................................45
6.3.2 Aluminum Wire Connection..................................................................45
6.4 Preparation Before Electrical Connections......................................................47
6.4.1 Opening PCS Door .............................................................................47
6.4.2 Removing the Protective Mesh.............................................................47
6.4.3 Checking Cables.................................................................................48
6.4.4 During Connection ..............................................................................48
6.5 Cable Requirements .....................................................................................48
6.6 DC Connection.............................................................................................50
6.6.1 Checking Before Connection................................................................50
6.6.2 Cable Connection ...............................................................................51
6.7 AC Connection.............................................................................................54
6.7.1 Safety Instructions ..............................................................................54
6.7.2 Cable Layout ......................................................................................55
6.7.3 AC Cable Connection..........................................................................55
6.8 Ground Connection ......................................................................................58
6.8.1 Connection of Ground Copper Bar........................................................59
6.8.2 Equipotential Connection of Multiple Devices ........................................59
6.8.3 Ground of the Shielded Layer of Communication Cable .........................60
6.9 Communication Connection ..........................................................................60
6.10 Inspection After Cable Connection ...............................................................61
6.11 Installation Checklist ...................................................................................62
7 Commissioning ...............................................................................................64
7.1 Commissioning Requirements ....................................................................... 64
7.2 Checking before Commissioning ...................................................................64
7.2.1 Checking Cable Connection.................................................................64
7.2.2 Checking the PCS...............................................................................65
7.2.3 Checking Batteries ..............................................................................65
7.2.4 Checking Grid Voltage.........................................................................65
7.3 Preparation before Starting ...........................................................................66
7.4 Starting PCS ................................................................................................66
7.5 Completing Commissioning...........................................................................67
7.6 On-site Commissioning of Two-stage PCS .....................................................68
8 PCS Start/Stop ...............................................................................................69
8.1 Starting the PCS...........................................................................................69

IV
8.1.1 Inspection before PCS Start.................................................................69
8.1.2 Starting the Device..............................................................................69
8.2 Stopping the PCS.........................................................................................70
8.2.1 Normal Stop .......................................................................................70
8.2.2 Stop in Case of Fault or Emergency......................................................71
9 Operating Mode ..............................................................................................72
9.1 Basic Functions............................................................................................72
9.2 Working State Description.............................................................................76
9.3 State Switching ............................................................................................77
9.4 Operating Mode ...........................................................................................78
9.4.1 Grid-connected Mode..........................................................................78
9.4.2 VSG Mode..........................................................................................78
9.4.3 Mode Switching ..................................................................................79
10 Web Operation .............................................................................................80
10.1 Running Environment Requirements ............................................................80
10.2 Login Steps ................................................................................................80
10.3 Web Main Interface.....................................................................................80
10.4 Web Menu .................................................................................................82
10.5 Operation Procedure...................................................................................82
10.6 Overview....................................................................................................83
10.6.1 General Information...........................................................................83
10.6.2 Real-time Status ...............................................................................84
10.7 Device Monitoring.......................................................................................84
10.7.1 Realtime Value..................................................................................84
10.7.2 Node Status......................................................................................84
10.7.3 Operation Parameters .......................................................................85
10.7.4 Protection Parameters.......................................................................85
10.7.5 System Parameters...........................................................................85
10.7.6 Timed Charge and Discharge.............................................................85
10.7.7 Device Instruction..............................................................................86
10.8 Device ......................................................................................................86
10.8.1 Device List........................................................................................86
10.8.2 Firmware Update ..............................................................................87
10.8.3 Fault Recorder ..................................................................................87
10.9 History Data ...............................................................................................88
10.9.1 Operation Log...................................................................................88
10.9.2 Historical Status................................................................................88

V
10.9.3 Parameter Log ..................................................................................88
10.9.4 Measuring Point Log..........................................................................88
10.10 System ....................................................................................................88
10.10.1 System Maintenance .......................................................................88
10.10.2 System Time...................................................................................89
10.10.3 Transfer Configuration .....................................................................90
10.10.4 Template Management ....................................................................91
10.10.5 Port Parameter................................................................................91
10.10.6 Kernel Management ........................................................................92
10.11 About .......................................................................................................93
11 PCS Functions ..............................................................................................94
11.1 LVRT .........................................................................................................94
11.2 High Voltage Ride Through (HVRT)..............................................................94
11.3 Temperature Derating .................................................................................95
11.3.1 Discharge Temperature Derating ........................................................95
11.3.2 Charge Temperature Derating ............................................................97
11.4 Altitude Derating .........................................................................................98
11.4.1 Discharge Altitude Derating................................................................98
11.4.2 Charge Altitude Derating .................................................................... 99
11.5 Protection Functions .................................................................................100
12 Routine Maintenance ................................................................................103
12.1 Safety Instructions ....................................................................................103
12.1.1 Safety Rules ................................................................................... 103
12.1.2 Five Safety Rules ............................................................................103
12.2 Maintenance and Interval ..........................................................................104
12.3 Replacing Electrical Components............................................................... 106
13 Troubleshooting ..........................................................................................108
13.1 Fault Checking .........................................................................................108
13.2 PCS Faults and Corrective Measures......................................................... 108
14 Appendix .....................................................................................................121
14.1 Technical Data..........................................................................................121
14.2 Tightening Torques ...................................................................................127
14.3 Quality Assurance .................................................................................... 127
14.4 Contact Information ..................................................................................128

1
1About This Manual
1.1 Validity
This Installation Manual is valid for the following device types:
• SC1200UD
• SC1375UD
• SC1575UD
• SC1725UD
• SC2000UD
• SC2500UD
The Power Conversion System device is referred to as “PCS” hereinafter unless otherwise
specified.
1.2 Contents
This manual mainly contains the following content.
Content Description
Safety
Instructions Safety instructions for operation and maintenance of the PCS.
Product
Description System composition, PCS function and operation mode.
Delivery Introduce the delivery and check after receiving the PCS.
Installation
guide
Introduce the mechanical installation, electrical installation, communica-
tion connection and installation check methods of the PCS, as well as
suggestions for installation space and cable connection.
Commission-
ing
The safety instructions of commissioning and commissioning processes
are introduced.
Start/Stop Steps to start and stop the PCS internal devices during normal mainte-
nance or troubleshooting.
Use Introduce the operation and use of human-machine interface (HMI) and
Web Server of the PCS.
Troubleshoot-
ing Introduce the potential faults and troubleshooting methods of the PCS.

2
Content Description
Routine
Maintenance
Introduce the daily maintenance of the PCS and the replacement of cer-
tain accessories.
Others Technical data of the PCS, exclusion of liability and the way to contact
SUNGROW.
1.3 Target Group
This manual is for technical personnel who are responsible for the transport, installation,
commissioning and other operations of the PCS. Only qualified personnel can perform the
installation, maintenance and troubleshooting of the PCS. Unauthorized persons should not
perform any operation to the PCS and should be away from the PCS to avoid potential haz-
ards. Qualified personnel are:
• Equipped with certain electrical, electrical wiring and mechanical knowledge and familiar
with electrical and mechanical principle diagram.
• Familiar with the construction and working principle of the energy storage system.
• Familiar with the construction and working principle of the PCS upstream and down-
stream equipment.
• Trained specifically for electrical device operation, installation and commissioning.
• Able to cope with the dangerous and emergency situations during installation and
commissioning.
• Familiar with the country/regional standards and specifications.
• Familiar with this manual.
1.4 Symbol Explanations
This manual contains important safety and operational instructions that must be accurately
understood and respected during the installation and maintenance of the equipment.
To ensure the optimum use of this manual, note the following explanations of the symbols
used.
DANGER indicates a hazard with a high level of risk which, if not avoided, will re-
sult 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.
1 About This Manual User Manual

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CAUTION indicates a hazard with a low level of risk which, if not avoided, could re-
sult 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.
The symbols below may be pasted on the electrical parts of the station. Make sure to read
the following symbols and fully understand them before installing the equipment.
Symbol Explanation
Lethal voltage inside! Do not touch!
Hot surface! Do not touch the hot surface of the device.
Do not touch live parts until 30 minutes after disconnection from the
power sources.
Protective earth. Earthing securely to ensure personal safety.
1.5 How to Use this Manual
Read this manual and other related documents before transporting and installing the PCS.
Documents must be stored at hand and available at all times.
All rights reserved including the pictures, markings and symbols used. Any reproduction or
disclosure, even partially, of the contents of this manual is strictly forbidden without prior
written authorization of SUNGROW.
The contents of the manual will be periodically updated or revised as per the product
development. The latest manual can be acquired on www.sungrowpower.com.
Please read over this manual and other related manuals before installation and
operation of the devices inside the PCS.
User Manual 1 About This Manual

4
2Safety Instructions
2.1 Intended Usage
This series of PCS developed and manufactured by SUNGROW without a transformer is for
power conversion in energy storage system. It provides an interface for the grid and battery
for storage system charging and discharging. The AC side of the PCS is connected to the
grid or load through an external step-up transformer.
With IP65 protection rate, the PCS can be installed outdoors.
Through the external medium-voltage transformer, the AC output voltage of the PCS is
raised to a grid-required level. Then the PCS can be connected to the grid. For specific tech-
nical requirements of the transformer, please refer to the “Connection Requirements of Me-
dium-Voltage Transformer”.
PCS can be adapted to a single-stage system solution (no DCDC) and a two-stage system
solution (DCDC+battery), as shown in Figure 2-1 and Figure 2-2.
figure 2-1 Energy storage system
No. Name
A Energy storage batteries (lead-acid battery, lithium battery and etc.)
B PCS
C Medium-voltage transformer
D Utility grid
E Loads

5
figure 2-2 Energy storage system
No. Name
A Battery + DCDC
B PCS
C Medium-voltage transformer
D Utility grid
E Loads
Turn on "Two Stage Energy Storage Mode" before commissioning referring to "7.6
On-site Commissioning of Two-stage PCS"if it is a two-stage system.
The two-stage system is currently only compatible with the SUNGROW DCDC
system application.
• Strictly follow the instructions in this section. No other or additional installation
is allowed except those described in this manual.
• Installation and connections other than the contents described in this section
may lead to device damages and void warranty claims from SUNGROW.
2.2 Important Safety Instructions
This section introduces the safety instructions during installation, operation and commission-
ing of the PCS. Read the safety instructions in this section before installation and mainte-
nance. Please also respect all warnings, instructions, and cautions in respective chapters
before installation, operation and commissioning.
User Manual 2 Safety Instructions

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Shock Hazard!
Death resulting from burns and electric shock upon touching the PCS live
components.
• Do not touch the terminals or conductors connected to the grid.
• Observe all safety regulations regarding the grid connection.
Shock hazard inside the product!
• Note and respect the warning labels in the product.
• Respect all safety instructions in this manual and other related documents.
Electric shock or fire due to device damage or system fault!
• 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.
The product should be dried if it was once in or passed through a humid environ-
ment, and it is recommended to dry it under ventilation for at least 24 hours.
Before operation, perform an insulation resistance test. Then perform a withstand
voltage test when the insulation resistance is passed:
• Only operate this device when all tests are passed.
• Continue to dry the device if it fails the insulation and withstand voltage tests
until the requirements are met.
Generally, the product can run normally after 2 rounds of drying.
After completing installation, maintenance and troubleshooting, power on the de-
vice in strict accordance with the instructions in this manual.
2 Safety Instructions User Manual

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2.3 Manuals
Very important information about the PCS installation, transportation and operation is con-
tained in this manual. Strictly observe all the descriptions in this manual, especially those
safety-related items.
• Please read all the instructions thoroughly prior to any transportation, installation and op-
eration on the PCS. Device damage, personal injury and property loss may occur if
otherwise.
• This manual and other related documents should be available for relevant persons at all
times.
2.4 Personnel
• Only professional electrician or personnel with professional training can transport, install
or operate the PCS;
• Operator should be familiar with the construction and working principle of the whole en-
ergy storage system;
• Operator should be familiar with the PCS User Manual;
• Operator should be familiar with the country/local specific standards.
2.5 Storage Battery Protection
High voltages exist between the positive and negative polarities of the storage batteries for
large-scale BESS(Battery Energy Storage System). Electrical shock or life risk may occur by
accidental touch.
High voltages exist between the positive and negative polarities 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.
If the battery needs to be reconnected after the switch or circuit breaker on battery
output side is disconnected, ensure that:
• The PCS is shutdown, and the PCS has been stopped for at least 30 minutes.
• Voltages inside the device fall within the safe range.
User Manual 2 Safety Instructions

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2.6 Ground Fault Protection
If a ground fault occurs in the PCS, some parts that are supposedly voltage-free
may carry lethal voltage. Accidental touch may cause serious damage. Make sure
there is no system ground fault before performing installation and operation, and
take proper protective measures.
2.7 Device Installation
Install the PCS strictly following the description in this chapter.
Install the PCS in electrical control room to avoid the noise generated during the operation
affecting the normal life of residents and other possible emergencies or safety accidents.
• The control room should be far from residential areas. Sound insulation measures should
be taken if necessary.
• Never place any flammable substance inside or around the control room.
• Unobstructed air flow.
• The design of the control room must meet with international and country-specific EMC
requirements.
Smog warning device is recommended to install inside the control room for quick
response of plant staff to the potential fire.
2.8 Electrical Connection
The electrical connection must be in accordance with the circuit diagram and the description
in this manual.
Shock Hazard!
Death resulting from burns and electric shock upon touching the PCS live
components.
• Configuration of the storage batteries and parameters such as current, voltage
and power must conform to technical requirements of the PCS.
• The PCS can be connected to the power grid only after being approved by the
local power supply company and being installed by professional technicians.
• All the electrical connections must comply with country/local standards and
regulations.
2 Safety Instructions User Manual

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Medium-voltage Transformer!
PCS outputs cannot be connected in parallel directly. Please adopt either of the fol-
lowing methods:
• One PCS connects to the medium-voltage grid through a single two-winding
transformer ; or
• Two PCSs connect to the medium-voltage grid through double split-type
transformer.
• No neutral point is required on the low voltage side of the step-up transformer.
• If a neutral line is present, installers must always keep in mind not to connect or
ground it.
Follow strictly the internal connection marks to connect cables.
2.9 Live Line Measurement
High voltages are present inside the device. Death resulting from burns 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.
2.10 Measuring Instrument
Instrument for measurement of the electrical parameters should meet the requirements
listed below:
• Instrument for measurement of the electrical parameters should be high quality
instrument with sufficient measuring range.
• Make sure the connection and use of the instrument are correct to avoid arc
and other dangers.
• Use suitable protective equipment, for example dielectric gloves if live line
measurement is required.
User Manual 2 Safety Instructions

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2.11 Volt-free Operations
Perform operations on the PCS only when all devices inside the PCS are completely
voltage-free.
• Avoid any accidental re-connections.
• Verify that no voltage or current is present with appropriate testing devices.
• Grounding whenever necessary.
• Cover possible live parts to avoid accidental contact.
• Ensure a clear escape route.
• Wait at least 30 minutes after the PCS stops completely to ensure that the PCS is
completely voltage-free.
2.12 ESD Protection
Devices may be damaged irreversibly by electrostatic discharge (ESD).
• Avoid unnecessary touching of the PCB.
• Observe all the ESD-related safety instructions. Wear proper personal
protective equipment (PPE), like wrist strap.
2.13 Web Parameter Setting
Some settable Web parameters are closely related to the operation of the PCS and internal
devices, therefore these parameters can only be modified after reliable evaluation of the
system.
• Improper parameter setting may affect the functionality of the device.
• Only qualified personnel can set the parameters.
2.14 Sand and Moisture Protection
Do not open the PCS door in sand storm, thunderstorm, strong wind or hail days or when
the ambient humidity is above 95%.
2 Safety Instructions User Manual

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2.15 Moisture protection
Penetrating moisture may damage the PCS! For normal operation of the PCS,
please respect the followings:
• Do not open PCS doors when relative humidity is above 95%.
• Do not install the PCS in rainy days.
2.16 Markings on the PCS
• Warning labels on the enclosure and inside the cabinet contain important warning and
safety information. Do not tear or damage them.
• Nameplates located in the back panel and inside the front door contain crucial PCS pa-
rameter information. Do not tear or damage them.
• All safety instructions, warning labels and nameplates on the PCS must be
clearly visible;
• Replace the markings once they are damaged or unclear.
2.17 Safety Warning Signs
During transport, installation, maintenance and troubleshooting of the PCS, keep non-re-
lated persons away.
• Post warning signs near the PCS upstream and downstream switches to prevent acci-
dental connection.
• Place necessary warning signs or barriers near the on-site operation areas.
2.18 Emergency Escape Route
The emergency escape route is critical during an emergency situation.
• Keep the escape route clear and unblocked at all times.
• Never block or lock the emergency escape route.
User Manual 2 Safety Instructions

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2.19 Maintenance and Service
Wait at least 30 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.
• Carry out necessary ground connection and short circuit connection.
• Cover the adjacent electrical components with insulation cloth during operation.
• Ensure the clearness of the safety route during maintenance and service work.
2.20 Disposal of Waste
When the PCS or any internal device is end of life, it cannot be disposed of together with
household wastes. Some components inside can be recycled and some components may
cause environment pollution.
Please contact local authorized recycling agency.
2.21 Others
All operations and installations of the PCS must comply with the country/local
standards and regulations.
• Only service the device when it is voltage-free.
• At least two personnel should be on site during maintenance or troubleshoot-
ing. Maintain the product only after it is safely powered off and discharged.
Other protection measures:
• Wear proper PPE (for example safety goggles, earplugs, dielectric gloves, insulating
shoes) when maintaining, servicing, transporting and installing 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.
2 Safety Instructions User Manual