Page 1 System Manual Turnkey Station SC2400UD-MV-US/SC2750UD-MV-US/SC3150UD-MV-US/ SC3450UD-MV-US/SC4000UD-MV-US/SC5000UD-MV-US SC2400UD-MV-US/SC2750UD-MV-US/ SC3150UD-MV-US/SC3450UD-MV-US/SC4000UD-MV-US/SC5000UD-MV- Turnkey StationSystem Manual SC2400_2750_ M-H-002053 3150_3450_4000_5000UD-MV-US-SEN-Ver112-202306 SC2400_2750_3150_3450_4000_5000UD-MV-US-SEN-Ver112-202306...
Page 3: Table Of Contents
Contents 1 About This Manual ...................1 1.1 Validity......................1 1.2 Contents ......................1 1.3 Target Group ....................2 1.4 Symbol Explanation ..................2 1.5 Expression Statement..................3 1.6 How to Use this Manual ..................3 2 Safety Instructions ....................5 2.1 Intended Usage....................5 2.2 Important Safety Instructions ................6 2.2.1 General Safety Rules ................6 2.2.2 Manual Storage ..................7 2.2.3 Storage Battery Protection ..............8...
Page 4 3.4 Internal Design of PCS..................16 3.4.1 Internal Components ................16 3.4.2 Overview of Operation Switches............16 3.4.3 Cable Inlet/Outlet Design ..............17 3.4.4 Remote control function...............18 4 Delivery and Storage ..................21 4.1 Identifying PCS ....................21 4.2 Checking for Transport Damages..............21 4.3 Storage......................22 5 Mechanical Mounting ..................23 5.1 Transport .....................23 5.2 Hoisting PCS....................24...
Page 5 6.3.7 Cable Specifications................39 6.4 General Principles for Wiring .................42 6.5 Circuit Diagram ....................42 6.6 Ground Connection ..................43 6.6.1 Brief Introduction.................43 6.6.2 Equipotential Connection of Internal Devices.........43 6.6.3 External Grounding ................44 6.7 DC Connection.....................45 6.7.1 Checking Before Connection..............45 6.7.2 DC Cable Connection................45 6.8 AC Connection .....................47 6.8.1 Safety Instructions ................47 6.8.2 AC Cable Connection ................48...
Page 6 9.2 Login Steps....................63 9.3 Web Main Interface..................63 9.4 Web Menu ....................65 9.5 Operation Procedure ..................65 9.6 Overview .....................66 9.6.1 General Information ................66 9.6.2 Real-time Status .................67 9.7 Device Monitoring..................67 9.7.1 Realtime Value..................67 9.7.2 Node Status..................67 9.7.3 Operation Parameters .................68 9.7.4 Protection Parameters.................68 9.7.5 System Parameters................68 9.7.6 Timed Charge and Discharge...............68 9.7.7 Device Instruction ................69...
Page 7 10.1.4 Working Mode...................83 10.2 L/HVRT(UL) ....................85 10.3 Temperature Derating .................87 10.3.1 Discharge Temperature Derating ............87 10.3.2 Charge Temperature Derating ............88 10.4 Altitude Derating ..................89 10.4.1 Discharge Altitude Derating..............89 10.4.2 Charge Altitude Derating..............89 10.5 Protection Functions ...................89 11 Troubleshooting ....................92 11.1 Safety Instructions ..................92 11.2 Fault Checking....................92 11.3 PCS Faults and Corrective Measures ............93 12 Routine Maintenance...
Page 9: About This Manual
About This Manual Validity This Installation Manual is valid for the following device types: • SC2400UD-MV-US • SC2750UD-MV-US • SC3150UD-MV-US • SC3450UD-MV-US • SC4000UD-MV-US • SC5000UD-MV-US The Power Conversion System device is referred to as “PCS” hereinafter unless otherwise specified.
Page 10: Target Group
Instructions and guide of the daily operation of the PCS Technical data of the PCS, exclusion of liability and the way to contact Others SUNGROW Target Group This manual is for technical personnel who are responsible for the transport, installation, commissioning and other operations of the PCS.
Page 11: Expression Statement
System Manual 1 About This Manual 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.
Page 12 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.
Page 13: Safety Instructions
Safety Instructions Intended Usage The PCS developed and manufactured by SUNGROW is mainly applied to large and me- dium energy storage power station. It adopts a modular design for quick installation and is equipped with the DC cabinet, module cabinet, medium voltage transformer, monitoring, and power distribution units, ensuring a reliable and safe grid-connected generation for a long time.
Page 14: Important Safety Instructions
"7.7 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. Installation of the PCS not in compliance with the description in this manual or in-...
Page 15: Manual Storage
System Manual 2 Safety Instructions Lethal voltages are present inside the device! • Pay attention and follow the warning signs on the device. • Respect all safety instructions in this manual and other pertinent documents. Electric shock or fire may occur due to the device damage or system fault. •...
Page 16: Storage Battery Protection
2 Safety Instructions System Manual 2.2.3 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! •...
Page 17: Voltage-Free Operations
System Manual 2 Safety Instructions 2.2.6 Voltage-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. •...
Page 18: Safety Warning Signs
All the descriptions in this manual are for the standard PCS. Please inform us in the purchase order if there is any specific requirements. The actual product re- ceived may differ. This manual may not cover all possible situations. Should a specific problem occur that is not explained in this manual, please contact SUNGROW.
Page 19: Product Description
SC-series PCSs produced by SUNGROW 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).
Page 20: External Design Of Pcs
3 Product Description System Manual Description Item Name Contains a DC cabinet, a PCS cabinet, etc. to realize charg- ing and discharging. The unit with an operation panel on its Module room front door is the master unit, and the others are slave units. Contains a transformer to raise the output low-voltage AC Transformer current to a grid-compatible medium-voltage level.
Page 21 System Manual 3 Product Description Description View Left view Right view LED Indicator The working status of the PCS can be acquired through these LED indicators. Description Color The control circuit supplies power normally POWER Green The PCS stops White OPERA- The PCS runs normally Green...
Page 22: Mechanical Data
3 Product Description System Manual Emergency Stop Button Press the emergency stop button in emergencies or fault conditions to disconnect the DC and AC circuit breakers immediately. Start/Stop Switch Rotate it to the OFF position to turn off the system. Rotate it to the ON position, then turn on the system by issuing commands in the background.
Page 23: Ventilation Design
System Manual 3 Product Description Weight SC2400UD-SC3450UD-MV-US 16000kg SC4000UD-MV-US 17000kg SC5000UD-MV-US 18000kg 3.3.3 Ventilation Design Cooling air comes into the PCS from the top air vent and hot air goes out of the PCS from the bottom air vent. It’s shown in the figure below. •...
Page 24: Internal Design Of Pcs
3 Product Description System Manual Internal Design of PCS 3.4.1 Internal Components Top view of the major electrical components inside the PCS is shown below. Description Item Device For DC connection ( Support DC 2 input) PCS unit Transformer Raise the output voltage to a medium voltage level 3.4.2 Overview of Operation Switches *The figure above is indicative only.
Page 25: Cable Inlet/Outlet Design
System Manual 3 Product Description Description Remark Name Provide DC input for control power supply Maintenance switch Disconnect Q1 for isolation during power failure External power sup- Provide external input for distribution transformer ply control switch Internal power sup- Provide internal power supply for distribution ply control switch transformer Connecting/disconnecting the AC side of the PCS...
Page 26: Remote Control Function
3 Product Description System Manual Description Item Device Hole-1 DC cabinet DC cables are connected to the PCS through these two holes. Hole-2 Communica- Communication cables are connected to the PCS through tion cable this hole inlet Hole-3 AC cables of transformer high voltage side are connected to AC cable the downstream public grid through this hole.
Page 27 System Manual 3 Product Description A:Communication interfaces The figure above is indicative only, and actual product may differ. Remote Emergency Stop Remote emergency stop terminals XB10-5 and XB10-11 are reserved on the host PCS. By connecting them, the PCS can be stopped. B:Remote emergency stop terminals The figure above is indicative only, and actual product may differ.
Page 28 3 Product Description System Manual • It is forbidden to carry out the wiring with live electricity. Wiring should be carried out when the machine is not powered on, and 17AWG cables are recommended. • The miniature circuit breaker (recommended voltage and current are 30V/1A) is required to control the connection of remote emergency stop terminals, so as to control the operation of the PCS.
Page 29: Delivery And Storage
Therefore, once you re- ceive the PCS, a detailed inspection is necessary. If any damage is detected, contact the shipping company or Sungrow immediately. A rele- vant photo is preferred. We will provide you with the fast and best service.
Page 30: Storage
4 Delivery and Storage System Manual Storage If it is not to be installed immediately upon reception, the PCS should be stored appropriately. • Store the PCS indoors, for example, large warehouse or workshop, to prevent possible condensation or damp; Raise the PCS base if it must be stored outdoors due to site conditions.
Page 31: Mechanical Mounting
Mechanical Mounting Respect all local standards and requirements during mechanical installation. Transport All devices are installed inside the PCS before delivery, and the PCS should be transported as an integrated unit. Transport the MV Station by crane with sufficient load capacity. The PCS is delivered to the user by a forwarding company.
Page 32: Hoisting Pcs
5 Mechanical Mounting System Manual • The place should be firm and flat with good drainage and no obstacles or outshoots. The PCS should be placed and supported by the four feet. Hoisting PCS 5.2.1 Safety Precautions • Strictly follow the safety operation rules of the crane in the process of hoisting. •...
Page 33: Fastening Of Connectors
Notice outside. hook. • National and local safety rules should be observed at all times. • Regardless of relevant safety rules may void pertinent warranty claims from SUNGROW. 5.2.3 Hoisting In the whole hoisting process, please observe the following rules:...
Page 34: Foundation
5 Mechanical Mounting System Manual • Hoist the PCS in a vertical manner. Do not drag or drop it on any surface. • Suspend the hoisting when the PCS is lifted 300mm from the supporting surface to check the connection between slings and the container. Continue hoisting only after confirming a reliable connection.
Page 35: Foundation Requirements
System Manual 5 Mechanical Mounting • Ambient and geological conditions, such as stress wave emissions and underground water level, should be taken into account. • The installation site should be dry and well ventilated, and far away from inflammable materials. •...
Page 36 5 Mechanical Mounting System Manual figure 5-3 The views of the oil tray Name Installation hole for drain valve Lifting rings The position marked in the figure is for reference only, and it may vary with actual onsite conditions. Transport the Oil Tray Hoist the oil tray and transport it to the target location via the lifting rings at four corner of the oil tray (shown by "B"...
Page 37: Installing Drain Valve (Optional)
System Manual 5 Mechanical Mounting • Oil tube(beyond the scope of delivery) Figure Step 1. The oil tray before delivery. 2. First fix the sealing ring and then the ball valve onto the oil tray. 3. Insert the connector into the ball valve, as shown in the left figure.
Page 38: Recommended Foundation Construction Plan
5 Mechanical Mounting System Manual Installation Parts Before installing the drain valve, the required parts: • Connector(in the scope of delivery) • Drain valve(in the scope of delivery) • Oil pipe (beyond the scope of delivery) Installation Methods step 1 Screw the connector into the mounting hole at the bottom of the MV Station. step 2 Install the drain valve on the connector.
Page 39: Other Precautions
System Manual 5 Mechanical Mounting In the construction of foundation, the grounding body is pre-embedded. One end of the grounding body is welded with the main grounding network of power plant while the other end is welded with the pre-embedded channel steel in the foundation to assure firm welding quality.
Page 40: Electrical Connection
Electrical Connection Safety Instructions 6.1.1 General Rules High voltage! Electrical shock! • Do not touch the live component! • Ensure that both the AC and DC sides are voltage-free before installation. • Never put flammable materials in the vicinity of the PCS. •...
Page 41: Five Safety Rules
The installation and design of the PCS must comply with national and local standards and regulations. • SUNGROW should hold no liability for the PCS or system fault caused by igno- rance of the description in this manual. Select optical fibers as the external communication cable to lower signal interference.
Page 42: Parts For Cabling
6 Electrical Connection System Manual • Disconnect all external connections and the PCS internal power supply • Avoid any accidental re-connections. • Verify that no voltage or current is present with appropriate measuring devices. • Grounding whenever necessary. • Cover possible live parts to avoid accidental contact. Parts for Cabling Incorrect connection of power cables will cause fires.
Page 43: Aluminum Wire Connection
System Manual 6 Electrical Connection figure 6-1 Copper wire terminal connection sequence of single-hole cable connection figure 6-2 Copper wire terminal connection sequence of double-hole cable connection Select a cable connection method based on actual needs. 6.2.2 Aluminum Wire Connection When a aluminum wire is selected, a copper-aluminum composite terminal is needed as shown below: figure 6-3 Copper-aluminum composite terminal of single-hole cable connection...
Page 44: Preparation Before Electrical Connections
6 Electrical Connection System Manual figure 6-4 Copper-aluminum composite terminal of double-hole cable connection Select a cable connection method based on actual needs. When the busbar has several connection terminals, an intact copper-aluminum composite sheet is required as shown in the following figure. figure 6-5 Copper-aluminum composite sheet connection sequence *The figure above is indicative only.
Page 45: Cable Crimping
System Manual 6 Electrical Connection • Megger and multi-meter • Other auxiliary tools or spare parts 6.3.2 Cable Crimping Crimp cables as follows before electrical connection. step 1 Strip off the insulation cover of the cable with a tripped length of 5mm longer than the depth of the cable lug;...
Page 46: Cable Inlet/Outlet Preparation
6 Electrical Connection System Manual Unlock all six door locks with keys to open the cabinet door. Be sure to secure all door locks reliably when closing the cabinet door to avoid ac- cidents caused by poor protection. 6.3.4 Cable Inlet/Outlet Preparation There are cable entries reserved on the bottom of the PCS, through which all cable connect- ing to external devices are led into the PCS.
Page 47: Checking Cables
System Manual 6 Electrical Connection The bottom cover plate at the cable entry cannot be discarded during cable wiring and must be reinstalled to ensure protection for internal equipment. - - End 6.3.5 Checking Cables Check to ensure the intactness and insulation of all cables before electrical con- nection.
Page 48 6 Electrical Connection System Manual At most 2 groups of circuit breakers can be set to the DC side with at most 8 input for each group of load switch. Fuse is equipped for each input with the fuse specification optional.
Page 49 System Manual 6 Electrical Connection table 6-2 Cable Specification of Multi-branch Version Connec- Specifications Requ. Cable Note tion holes Alumi- num/Cop- per ca- Each The cross-sectional area of the bles can branch positive and negative input ca- be flexi- DC input has two Φ13 bles is 240 mm...
Page 50: General Principles For Wiring
6 Electrical Connection System Manual Ethernet port; the PCS provides various standard communication ports, such as Ether- net/Modbus, IEC61850, 104 and etc. The PCS can provide power to both internal and external devices. Supplying power to internal devices is a default standard configuration, and supplying power to external devices is an optional function.
Page 51: Ground Connection
System Manual 6 Electrical Connection Item Name DC input A1/A2 AC output External communication port #1 / #2 PCS1/PCS2 Transformer The auxiliary power supply is reserved to power the battery container, and the power does not exceed 100kVA. PCS1/PCS2 are connected to the low-voltage winding in MV respectively, and re- quire attention when running in parallel.
Page 52: External Grounding
6 Electrical Connection System Manual • Measure the electrical conductivity between the device ground terminals and the total equipotential connection copper bar to ensure the effectiveness of the internal ground connection; • Ground the shielding layers and protection layers of the cables connected to the PCS outside.
Page 53: Dc Connection
Any installations not following the standards or installation and alternation without permission may lead to safety incidents or damage to the devices. SUNGROW shall hold no liability for the damages caused. DC Connection 6.7.1 Checking Before Connection Check the following items before DC cable connection: •...
Page 54 6 Electrical Connection System Manual figure 6-7 DC side terminals of single branch version (SC2400UD-MV-US/SC2750UD-MV-US/ SC3150UD-MV-US/SC3450UD-MV-US/SC4000UD-MV-US/SC5000UD-MV-US) For multi-branch PCS, the number of branches varies from model to model. SC2400_2750_ 3150_3450UD-MV-US supports up to 12 branches and SC4000_5000UD-MV-US supports up to 10 branches, as shown in the figure below.
Page 55: Ac Connection
System Manual 6 Electrical Connection • Long bolts may affect the insulation and may cause short circuit. • Remove the heat-shrinkable tubing between the cable lug and the copper bar if necessary. Poor contact or over-heating may follow if otherwise. step 3 Confirm that all cable connections are secure.
Page 56: Ac Cable Connection
6 Electrical Connection System Manual Electrical shock hazards! • Do not touch the live components. • Disconnect the AC switches and ensure all terminals are voltage-free. • Disconnect the power distribution cabinet upstream the PCS AC side to ensure the safety of the PCS LV side. •...
Page 57: Communication Connection
System Manual 6 Electrical Connection step 2 Prepare the terminals and install them tightly, where reference can be made to the cable connector installation manual. The wiring terminal can be connected with either copper cable or aluminium cable. • In case of copper cable, use copper wiring terminals. •...
Page 58: Installation Checklist
6 Electrical Connection System Manual figure 6-9 Maintenance communication port 6.10 Installation Checklist Check and ensure that all connections are correct and firm after electrical connection. Then check the following items. • Check the bottom of the PCS and seal the gaps between the cables with fireproof mud. If the cable glands are used, make sure they are tightened.
Page 59 System Manual 6 Electrical Connection Then the screw of the pressure relief port needs to be removed before connecting to the grid. As shown below: step 1 Remove the screws of the front and rear pressure relief devices. step 2 Remove the screw from the bottom pressure relief device.
Page 60 6 Electrical Connection System Manual - - End...
Page 61: Commissioning
Commissioning Safety Instructions High voltage! Electric shock! • Wear proper protection equipment before all operations on the device. • Do not touch the live terminals or conductors. • Respect all safety instructions inside the device and in this manual. • Respect all safety instructions prescribed by the manufacturer of devices con- nected to the PCS.
Page 62: Checking Before Commissioning
7 Commissioning System Manual • Ensure all the cable connections are secure and all bolts are fixed properly. • Ensure DC side voltage meets the PCS requirements and the polarities are correct. • Ensure AC side voltage meets the PCS requirements. •...
Page 63: Checking Pcs
System Manual 7 Commissioning Devices inside the PCS cabinet have been connected to the internal floating equi- potential grounding copper bar. The installation hole in the floating grounding cop- per bar is reserved for the power cable connection, and no on-site PE cable can be connected to it.
Page 64: Preparation Before Starting
7 Commissioning System Manual • Measure and record the grid frequency. The measured data should not exceed the grid permissible value. • Measure the THD and check the curve if possible. The PCS may not operate stop if the THD is serious. •...
Page 65: Completing Commissioning
System Manual 7 Commissioning step 5 Running status on the Web pageis "Stop". Refer to the section “Operation Parameters”in this manual, and select an operation mode and running parameters on the running parame- ter interface according to demands. It is necessary to select the operating mode and operating parameters before the PCS is powered on;...
Page 66: On-Site Commissioning Of Two-Stage Pcs
7 Commissioning System Manual After the PCS is operating, make sure there are no flammable materials or other materials at least 5 meters around the installation site. Local/national standards about the min. electric clearance around the PCS should be respected. PCS needs no manual control in daily operation.
Page 67 System Manual 7 Commissioning Please contact SUNGROW if the IP address of the PCS and the BSC needs to be modified on site.
Page 68: Starting/Stopping
Starting/Stopping Starting 8.1.1 Inspection Before starting After the maintenance or service work, you may start the PCS. Inspect the following require- ment before starting the PCS: • All connections are done by strictly following the installation manual and circuit diagram. •...
Page 69: Stopping Pcs
System Manual 8 Starting/Stopping step 2 Confirm that the AC and DC side cables are well connected, and then close the switches of the front and rear devices of the PCS. step 3 Measure the voltage of the to-be-connected battery to ensure that it falls within the allowable range.
Page 70 8 Starting/Stopping System Manual step 2 Disconnect the DC and AC switches. step 3 Disconnect the downstream switches of the PCS. step 4 Disconnect the upstream switches of the PCS. step 5 The PCS stops operating. - - End • The emergency stop button is used only in case of emergency or fault.
Page 71: Web Operation
Web Operation Running Environment Requirements Item Parameter Browser Chrome 65 above Min. resolution 1024 x 768 Login Steps Connect the SCU to the PC network card. Configure the IP of the PC to a network segment the same as that of the ETH2 port. The IP of ETH2 port is 192.168.13.127 by default, and therefore, the IP of the PC can be set to 192.168.13.X, and the subnet mask is 255.255.255.0.
Page 72 9 Web Operation System Manual Description Item Name Navigation Display main function modules of the Web. menus Function dis- Display the current interface. play area Display the current alarm level and alarm number. Users can Alarm icon click the icons to enter the corresponding alarm interface. Help Display the basic configuration steps of the SCU.
Page 73: Web Menu
Refer to the chapter “[System Time]”. step 4 Automatically search the device. Devices that can be automatically searched, such as SUNGROW power conversion system, can be added via the auto search function with addresses allocated automatically. Refer to the chapter “[Device List]”.
Page 74: Overview
9 Web Operation System Manual - - End Overview 9.6.1 General Information Click [Overview]→ [General Information] to enter the corresponding interface. Shotcut Menu Device Setup: devices can be automatically searched and added. Click the menu to add, de- lete, modify, and view the device. Perform auto search to search devices meet conditions and to automatically allocate addresses.
Page 75: Real-Time Status
System Manual 9 Web Operation System Maintenance: perform operations such as system upgrade, system rebooting, and restoring factory default. Refer to the chapter “[System Maintenance]”. Device Instruction: perform operations, such as start, stop, and standby. Power flow View power flow of the PCS. Data Index View information such as Daily Discharge, Cumulative Discharge, Daily Charge, Cumulative Charge, Real-time Active Power, Real-time Reactive Power, Offline Device, and Online...
Page 76: Operation Parameters
9 Web Operation System Manual - - End 9.7.3 Operation Parameters It is recommended that the input voltage of the DC battery of two PCS units sharing a transformer in the MV system be controlled within 100V, and excessive voltage difference will affect the performance of the parallel system.
Page 77: Device Instruction
System Manual 9 Web Operation step 2 Set the start time and end time, and the start time should be earlier than the end time. step 3 Set the power, which can be set to a value ranging from -110 to 110. step 4 Select the desired setting, and click “[Setting]”...
Page 78: Firmware Update
3 Click “[Confirm]” on the pop-up window. - - End 9.8.2 Firmware Update Click “[Firmware Update]” to upgrade the firmware of SUNGROW PCS connected to the SCU. step 1 Click “[Device]→[Firmware Update]” to enter the corresponding interface. step 2 Click “[Select a Firmware File]”. Select an upgrading file, and import it to the system, to match the corresponding PCS.
Page 79: History Data
System Manual 9 Web Operation - - End History Data 9.9.1 Operation Log step 1 Click “[History Data]→[Operation log]” to enter the corresponding interface. step 2 On this interface, users can view history information. - - End 9.9.2 Historical Status step 1 Click [History Data]→[Fault History] to enter the corresponding interface.
Page 80: System Time
9 Web Operation System Manual step 3 Click “Upgrade” on the pop-up version information window. The system enters upgrading state. - - End The upgrade file must be the ".scu" file. If there is no new measuring point function, there is no need to re-select the tem- plate and default configuration for the template upgrade in the scu software;...
Page 81: Transfer Configuration
System Manual 9 Web Operation When the clock source is set to "NTP", time of all devices can be synchronized. Click the "Time zone" drop-down-list to select the local time zone. Fill in "Domain", set the time in- terval, and click [Save], so that the SCU time is synchronized with server time. Set the system time when using the SCU for the first time.
Page 82: Template Management
9 Web Operation System Manual step 3 Click “[Forwarding service]”, to view device name, local port, and forwarding address. step 4 Click “[Network Port]”, to set peer-end IP. - - End 9.10.4 Template Management step 1 Click “[System]→[Template Management]” to enter the corresponding interface. step 2 Click “[Generate template]”, and fill in the template name in the pop-up window.
Page 83: Kernel Management
System Manual 9 Web Operation Network Port Default IP ETH1 192.168.0.100 ETH2 192.168.13.127 step 3 If "Automatically obtain IP settings (DHCP)" is set to [ ], fill in the information such as the IP address, subnet mask, and default gateway, and click the button [ ] to save the operation.
Page 84: About
9 Web Operation System Manual 9.11 About Click [About], to enter the corresponding interface. Users can view firmware information of the PCS on this interface.
Page 85: Pcs Functions
10 PCS Functions 10.1 Operation Mode 10.1.1 Basic Functions On-grid Operation The PCS is designed with perfect on-grid operation function and can flexibly adapt to differ- ent batteries to control charging and discharging. Charging/discharging mode and charging/ discharging instruction are set through the PC or on the user interface. The specific opera- tion modes are as follows: On-grid constant power (AC), on-grid constant power (DC), on-grid constant voltage, and on-grid constant current are set according to dispatch instructions and available in both...
Page 86 10 PCS Functions System Manual the VSG function. During off-grid operation, the PCS can activate the VSG function to pro- vide an AC voltage source to support the load. In this case, the amplitude and frequency of the AC voltage source are automatically adjusted according to the load attributes. The VSG function has a commanding advantage in commercial micro grid with multiple kinds of energies.
Page 87 System Manual 10 PCS Functions Desciptions Range Parameter Default 60.1 45Hz-65Hz fpwrdec Over-frequency derating start point on P(f) curve fpwrinc Under-frequency rising start point on P 59.9 45Hz-65Hz (f) curve PdecGrad Power derating gradient on P(f) curve 100% Pn/Hz 0~200%Pn/ PIncGrad Power rising gradient on P(f) curve 100% Pn/Hz...
Page 88 10 PCS Functions System Manual Desciptions Range Parameter Default PU Voltage De- Under-voltage derating start point on 94.0% Un 90%~100% crease Start P-U curve - Charge Point PU Voltage De- Under-voltage derating end point on P- 90.0% Un 80%~100% crease End U curve - Charge Point Reactive Power Control...
Page 89 System Manual 10 PCS Functions Desciptions Range Parameter Default Deadzone Deadzone voltage range (%) 0%~5% Minimum reac- Inductive Q/Sn value of point P4 in the 0%~50% tive power ratio Q(U) mode curve Maximum reac- Capacitive Q/Sn value of point P1 in 0%~50% tive power ratio the Q(U) mode curve...
Page 90: Working State Description
10 PCS Functions System Manual 10.1.2 Working State Description The PCS can be in "key stop", "standby", "running", "emergency stop", or "fault" state. Key Stop If no instruction operation or scheduling is performed on the PCS, the system is in the stop state after initial stop.
Page 91: Mode Switching
System Manual 10 PCS Functions fault state will not be removed until the user presses the start/stop button or the emergency stop button manually. 10.1.3 Mode Switching When the PCS is powered up and enters initial stop state, the control system will perform self-test to check the control and sensor systems.
Page 92 10 PCS Functions System Manual It is recommended that the input voltage of the DC battery of two PCS units sharing a transformer in the MV system be controlled within 100V, and excessive voltage difference will affect the performance of the parallel system. It is recommended that the power dispatching mode of two PCS units sharing a transforme in the MV system should be consistent, the charge and discharge modes should be consistent, and the active mode or reactive mode should be con-...
Page 93: L/Hvrt(Ul)
System Manual 10 PCS Functions • The PCS responds to VSG mode instructions only in the stop state, not the standby state. The condition under which the PCS can operate normally is that the protection function works well, and the battery voltage falls within the speci- fied range.
Page 94 SRD(s), and returns to the pre- disturbance current level or percentage as defined in the requirements document within the time specified in the local standards or regulations. SUNGROW’s PCS meets the above mentioned requirements.
Page 95: Temperature Derating
System Manual 10 PCS Functions 10.3 Temperature Derating 10.3.1 Discharge Temperature Derating figure 10-7 Discharge temperature derating curve of SC2400UD-MV-US/SC2750UD-MV-US/ SC3150UD-MV-US/SC3450UD-MV-US/SC4000UD-MV-US Ambient temp. T PCS operation situation T<-35℃ The PCS starts with the aid of auxiliary heater -35℃<T≤45℃ Operate for a long time at 100% of the overload condition 45℃<T≤50℃...
Page 96: Charge Temperature Derating
10 PCS Functions System Manual 10.3.2 Charge Temperature Derating figure 10-9 Charge temperature derating curve of SC2400UD-MV-US/SC2750UD-MV-US/SC3150UD- MV-US/SC3450UD-MV-US/SC4000UD-MV-US Ambient temp. T PCS operation situation T<-35℃ The PCS starts with the aid of auxiliary heater -35℃<T≤45℃ Operate for a long time at 100% of the overload condition 45℃<T≤50℃...
Page 97: Altitude Derating
System Manual 10 PCS Functions 10.4 Altitude Derating 10.4.1 Discharge Altitude Derating When the PCS working altitude is below 2000m, the PCS can operate at 100% of the nor- mal. The PCS should derate its output power according to the curve shown below when the PCS working altitude is above 2500m.
Page 98 10 PCS Functions System Manual Grid Over-/Under-voltage Protection When the grid voltage exceeds the allowable range, the PCS will stop operating, send warn- ing signals and display the fault type on the Web touch screen. The PCS can detect the anomaly and respond quickly. Grid Over-/Under-frequency Protection When the grid frequency exceeds the allowable range, the PCS will stop operating, send warning signals and display the fault type on the Web touch screen.
Page 99 System Manual 10 PCS Functions Transformer Over-temperature The PCS transformer is equipped with high-precision thermal sensor to monitor the temper- ature of the module. Once over-temperature is detected, DSP will help to maintain the safe operation of the PCS by sending instruction to stop the PCS. Module Fault PCS IGBT module is equipped with self-protection function.
Page 100: Troubleshooting
If otherwise, please contact SUNGROW. If the components needs to be replaced with products from other manufacturer or with different model number, a prior analysis and confirmation by SUNGROW is needed. Failure to follow this procedure may lead to physical injury or death and void all warranty from SUNGROW.
Page 101: Pcs Faults And Corrective Measures
System Manual 11 Troubleshooting • Open-circuit voltage of the storage battery • State of the emergency stop button • Grid connection status • Communication of the measurement board 11.3 PCS Faults and Corrective Measures The fault information of the PCS can be viewed on the WEB interface.
Page 102 920us. 3. If the fault is not caused by the foregoing reasons and still exists, please contact SUNGROW. Normally, the machine will reconnect to the grid when the DC voltage returns to normal. If the fault repeatedly occurs (If the busbar 1.
Page 103 LVRT required 4. If the fault is not caused by the automaticall- duration. In off-grid foregoing reasons and still exists, y cleared mode: Enable the please contact SUNGROW. 30s after AC under-voltage protective function only after shutdown. the output voltage is stable.
Page 104 3. If the fault is not caused by the LVRT required shutdown. foregoing reasons and still exists, duration. In off-grid please contact SUNGROW. mode: Enable the AC over-voltage function only after the output voltage is stable. The protection is as the same as that of grid connection.
Page 105 3. If the fault is not caused by the mode: The function only after foregoing reasons and still exists, fault will be the output voltage please contact SUNGROW. automaticall- is stable. The y cleared protection is as the 30s after...
Page 106 Wait for the PCS to return to normal. an over-current in automaticall- If the fault persists, please contact Module the hardware (- y cleared for SUNGROW to manually power Protection including AC/DC 5 times at down the machine and clear the over-current), or the most. After fault.
Page 107 Corrective measures condition condition 5. If the fault is not caused by the foregoing reasons and still exists, please contact SUNGROW. Generally, the machine will reconnect to the grid when the internal temperature returns to normal. If the fault repeatedly occurs: 1.
Page 108 5s. protection parameter settings. value. 4. If the fault is not caused by the foregoing reasons and still exists, please contact SUNGROW. 1. Three-phase AC output is 1.25 times larger than the rated current. 2. Or the load is 1.3...
Page 109 10s 2. If the fault is not caused by the without other foregoing reasons and still exists, 3. The faults. please contact SUNGROW. communication is abnormal, and the Tigbt is greater than 93 for 6s in operation mode. 4. The...
Page 110 73℃ for is lower than if so. 40ms. 65℃ for 4. Check whether the fan is running 200ms. properly. Replace the fan if necessary. 5. If the fault is not caused by the foregoing reasons and still exists, please contact SUNGROW.
Page 111 3. If the fault is not caused by the foregoing reasons and still exists, please contact SUNGROW. The sampled Battery voltage on the polarity...
Page 112 If this fault during the startup occurs over Reboot the machine. If the fault AC Switch process, or the five times, it persists, please contact SUNGROW. Fault switch node fails to cannot be cleared open during the shutdown process. automaticall- 1.
Page 113 IGBT feedback IGBT node signal is feedback abnormal (drive Reboot the machine. If the fault Drive Board node signal power undervoltage, persists, please contact SUNGROW. Fault returns to module conduction normal. through, etc.). The Bus voltage difference between The fault is...
Page 114: Routine Maintenance
If otherwise, please contact SUNGROW. If the components needs to be replaced with products from other manufacturer or with different model number, a prior analysis and confirmation by SUNGROW is needed. Failure to follow this procedure may lead to physical injury or death and void all...
Page 115: Five Safety Rules
System Manual 12 Routine Maintenance Sand and moisture penetration may affect the performance of electric devices in- side the PCS! • Do not perform electrical connection in sandy season or when the ambient rela- tive humidity is above 95%. • Perform electrical connection on fine weather days.
Page 116: Maintenance Interval
Make sure to reassembly the cover and fasten all the screws after the main- tenance work. Make sure all bolts are securely fixed. Once any unconformity is found during routine maintenance of the PCS and inter- nal devices, please make corrections immediately. Contact SUNGROW if there is any questions.
Page 117 System Manual 12 Routine Maintenance Item Method Interval Make corrections immediately once the following items are found: • Check if there is flammable materials on the top of External Every quarter and around the PCS; and if there are other factors checking that may impair the system operation •...
Page 118 12 Routine Maintenance System Manual Item Method Interval Check the cable connection after the PCS and internal devices are voltage free. Make corrections once any unconformity is found. • Check if all cable entries are sealed properly; • Check if there is water leakage inside the PCS; check if PCS windows and doors can close and open flexibly;...
Page 119: Replacing Electrical Components
If otherwise, please contact SUNGROW. If you needs to replace the components with products from other manufacturer and with different model number, a prior analysis and confirmation by SUNGROW is needed. Failure to follow this procedure may lead to physical injury or death and void all warranty from SUNGROW.
Page 120 12 Routine Maintenance System Manual Maintenance and Operation Steps for Situation 1: Materials: • • Water • Alcohol or other non-corrosive detergent Figure Step 1. Clean the smudginess on the surface using a rag (or oth- er cleaning tool) with water 2.
Page 121 System Manual 12 Routine Maintenance Figure Step 1. Polish the rough paint surface or the scratched parts by abrasive paper until the surface is smooth 2. Clean the target parts using a rag with water or 97% alcohol 3. When the surface is clean and dry, paint the scratched parts of the paint by banister brush and make sure the painting is as uni- form as possible...
Page 122 12 Routine Maintenance System Manual Figure Step 1. Polish the damaged parts of the paint to re- move the surface rust or other roughness. 2. Clean the target parts using a rag with water or 97% alcohol to clean the dust and dirty.
Page 123 System Manual 12 Routine Maintenance Check whether the protective paint sprayed on casing of the product is fallen off or peeled off; if so, repair it timely. Spray a special protective paint to the exterior of the product every 5 years.
Page 124: Appendix
13 Appendix 13.1 System Parameter table 13-1 SC2400UD-MV-US/SC2750UD-MV-US Parameter SC2400UD-MV-US SC2750UD-MV-US DC side Max. DC voltage 1500V Min. DC voltage 700 V 800 V DC voltage range 700 – 1500 V 800 – 1500 V 1760A*2 @45℃/1935A *2 @30℃ Max. DC current No.
Page 125 System Manual 13 Appendix Parameter SC2400UD-MV-US SC2750UD-MV-US AC voltage distortion < 3 % (Linear load) DC voltage component < 0.5 % Un (Linear balance load) Unbalance load capacity 100 % Nominal voltage frequency / 60 Hz / 55 – 65 Hz...
Page 126 13 Appendix System Manual Parameter SC2400UD-MV-US SC2750UD-MV-US Display LED, WEB HMI RS485, CAN, Ethernet Communication Compliance UL1741, UL1741 SA, IEEE 1547 L/HVRT, L/HFRT, active & reactive power control and Grid support power ramp rate control, Volt-var, Volt-watt, Frequency- watt table 13-2 SC3150UD-MV-US/SC3450UD-MV-US...
Page 127 System Manual 13 Appendix SC3150UD-MV-US Parameter SC3450UD-MV-US Converter nominal AC 630 V 690 V voltage Converter AC voltage range 554 – 693 V 607 - 759V AC voltage distortion < 3 % (Linear load) DC voltage component < 0.5 % Un (Linear balance load) Unbalance load capacity 100 % Nominal voltage frequency /...
Page 128 13 Appendix System Manual SC3150UD-MV-US Parameter SC3450UD-MV-US Allowable relative humidity 0 - 100 % range Max. operating altitude 1000 m (Standard) / > 1000 m (Optional) Display LED, WEB HMI RS485, CAN, Ethernet Communication Compliance UL1741, UL1741 SA, IEEE 1547 L/HVRT, L/HFRT, active &...
Page 129 System Manual 13 Appendix Parameter SC4000UD-MV-US SC5000UD-MV-US Adjustable reactive power -100 % – 100 % range Feed-in phases / AC 3 / 3-PE connection AC side (Off-Grid) Converter port nominal AC 800 V 900V voltage Converter port AC voltage 704–880 V 792-990 V range AC voltage distortion...
Page 130: Tightening Torques
13 Appendix System Manual Parameter SC4000UD-MV-US SC5000UD-MV-US Overheat protection General Data Weight 17000kg / 37478.6 lbs 18000kg / 39683.2 lbs Degree of protection TYPE 3R -35 to 60℃(> 45 ℃ derat- -35 to 60℃(> 40 ℃ derat- Operating ambient temper- ing)/'-31 to 140 ℉...
Page 131: Quality Assurance
• The customer shall give SUNGROW a reasonable period to repair the faulty device. Exclusion of Liability In the following circumstances, SUNGROW has the right to refuse to honor the quality guarantee: • The free warranty period for the whole machine/components has expired.
Page 132: Contact Information
System Manual For faulty products in any of above cases, if the customer requests maintenance, paid main- tenance service may be provided based on the judgment of SUNGROW. 13.4 Contact Information In case of questions about this product, please contact us.
Page 133 Sungrow Power Supply Co., Ltd. www.sungrowpower.com...

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