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Summary of Contents for Sinexcel PWS2-30K-NA
- Page 1 PWS2-30K-NA Energy Storage Inverter User's Manual Shenzhen Sinexcel Electric Co., Ltd.
- Page 2 Filed in: Nov. 4, 2021 Applicable to: PWS2-30K-NA Shenzhen Sinexcel Electric Co., Ltd. (“Sinexcel”) provides its customers with all-around technical support. Users can contact local Sinexcel office or customer service center or directly contact Sinexcel Headquarters. Shenzhen Sinexcel Electric Co., Ltd.
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Page 3: Table Of Contents
CONTENT CHAPTER 1 OVERVIEW ____________________________________________________ - 1 - __________________________________________________________ - 1 - ODEL DEFINITION _________________________________________________________ - 1 - CON INTERPRETATION 1.2.1 Icons in the manual _____________________________________________________ - 1 - 1.2.2 Inverter prompt icons ____________________________________________________ - 2 - ________________________________________________________ - 2 - AFETY INSTRUCTIONS 1.3.1 Safety instructions for mechanical installation ________________________________ - 3 -... - Page 4 CHAPTER 4 DEBUG AND OPERATION ________________________________________ - 31 - _____________________________________________________ - 31 - TARTUP AND SHUTDOWN 4.1.1 Check before startup____________________________________________________ - 31 - 4.1.2 Startup steps __________________________________________________________ - 31 - 4.1.3 Shutdown steps ________________________________________________________ - 31 - _________________________________________________________ - 32 - OWER REGULATION CHAPTER 5 HMI AND OPERATIONS _________________________________________ - 33 - ______________________________________________________________ - 33 -...
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Page 5: Chapter 1 Overview
Overview Chapter 1 Overview 1.1 Model definition The model definition of PWS2-30K-NA energy storage inverter is shown in Fig. 1-1: Fig.1-1 Model definition 1.2 Icon interpretation This user’s manual is about installation and use of Sinexcel PWS2 30kW energy storage inverter. -
Page 6: Inverter Prompt Icons
1.3 Safety instructions PWS2-30K-NA energy storage inverter is designed and tested in strict accordance with relevant international safety standard. Its installation, trial operation, operation and maintenance should comply with safe operation specifications of electrical and electronic equipment. -
Page 7: Safety Instructions For Mechanical Installation
Overview electrical and electronic equipment; be familiar with relevant safety specification of electric system. Professionals who meet the above conditions can: (1) Install the inverter onto the wall; (2) Setup energy storage system as per customer’s requirement; (3) Conduct trial operation of energy storage system; (4) Operate, debug and maintain energy storage system. -
Page 8: Safety Instructions For Inverter Operation
Overview All electrical installations should meet national/regional electrical standards; On-grid operation can be conducted after permission is obtained from local national/regional electric power department. CAUTION Before power-on, please ensure that it is reliably grounded and the grounding meets local electrical standards. 1.3.3 Safety instructions for inverter operation Any contact with copper bar, uncovered contact spot or terminal inside the device that is connected to the loop of power grid might result in... -
Page 9: Safety Instructions For Maintenance And Replacement
Overview 1.3.4 Safety instructions for maintenance and replacement Improper equipment maintenance and operation might cause personal injury or equipment damage. Before any operation, users should strictly abide by the following steps: Disconnect the AC isolation switch between the power grid and the inverter, and then turn off DC breaker of the battery box. -
Page 10: Others
Overview 1.3.5 Others Safety signs, warning label and nameplate on the inverter: Must be clearly visible; WARNING Should not be removed or covered. 1.4 Precautions 1.4.1 Personnel requirements Energy storage inverter must be debugged and maintained by the engineers designated by the manufacturer or its agent. -
Page 11: Chapter 2 Introduction To Energy Storage System
Chapter 2 Introduction to energy storage system 2.1 System application As shown in Fig.2.1, the energy storage system set up by PWS2-30K-NA is composed of battery (pack), energy storage inverter, intelligent power distribution unit, EMS and BMS. Battery pack is connected to energy storage inverter. Energy storage inverter is connected with the load and power grid through intelligent power distribution unit. -
Page 12: Adaptive Power Grid Type
IN DC SIDE. THE DEVICES CAN BE CONNECTED TO THE POWER GRID IN PARALLEL IN AC SIDE. THE DC SIDE OF TWO OR MORE ENERGY STORAGE INVERTERS SHOULD NOT BE PARALLELED ON ONE SAME BATTERY PACK/MODULE. 2.2 Overall dimension Overall dimension of PWS2-30K-NA is shown in Fig.2-3. - 8 -... -
Page 13: Appearance
Introduction to energy storage system Fig.2-3 Overall dimension of PWS2-30K-NA (unit: mm) 2.3 Appearance The appearance of PWS2-30K-NA is shown in Fig.2-4. Fig.2-4 Appearance of front side of PWS2-30K-NA Name Description DC terminal To connect power cables to the battery cabinet... -
Page 14: Technical Parameters
Upper panel Case cover Air outlet Ventilation duct exit for heat dissipation Fig.2-5 Appearance of back side of PWS2-30K-NA 2.4 Technical parameters Technical parameters of PWS2-30K-NA energy storage inverter: Table 2-1 Table for technical parameters Utility-interactive Mode Battery charge/discharge voltage... - Page 15 Introduction to energy storage system Actual capability: 0.1~1 leading or lagging (Controllable) Stand-alone Mode Battery discharge voltage 150V~750V (350~750V Full Power) Battery discharge current 0~90A AC output voltage 480V (±5% configurable) AC output current 0~36A Nominal AC output power 30kW (33kW max) AC frequency 60Hz (±5Hz configurable) Listed: 0.8~1 leading or lagging (Load-depend)
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Page 16: Technical Specification
2.5.1 Principle description There are three operation modes: on-grid discharging, charging and off-grid discharging. When the battery voltage connected to PWS2-30K-NA is within the preset normal voltage range, the inverter can operate under on-grid discharging, charging and off-grid discharging. If the inverter is in discharging state, the DC power supply of the battery can be inverted into 3-phase AC power supply. - Page 17 Introduction to energy storage system Standard Ethernet interface is used to communicate with upper computer to realize such functions as remote control and remote software upgrading. Protections Overcurrent protection Overload protection Short circuit protection Environment over-temperature protection Over-temperature protection of power module Ground leakage current monitoring Grid voltage monitoring Grid frequency monitoring...
- Page 18 Introduction to energy storage system The lower limit of over-temperature de-rating is about 66% of rated power. If the de-rating reaches the lower limit but the temperature is not improved, the inverter will shut down automatically. Grid under-voltage de-rating If the grid voltage is too low, the inverter will limit the grid current to a specified range through de-rating.
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Page 19: Chapter 3 Equipment Transport, Storage And Installation
Equipment transport, storage and installation Chapter 3 Equipment transport, storage and installation 3.1 Transport and storage During transport and storage of inverter cabinet, pay attention to the packing label on housing. Transport and storage should meet the following requirements: Don’t dismantle external package of the inverter. Ensure there is no corrosive gas nearby. -
Page 20: Installation Flow
Equipment transport, storage and installation 3.2 Installation flow Start Unpack & Inspect Read manual Install now? Store Select installation location Transport Install Electrical connection Inspect before operation Trial operation Operates Debug Nomarlly? Fig. 3-1 Flow chart for installation - 16 -... -
Page 21: Open-Case Inspection
Equipment transport, storage and installation 3.3 Open-case inspection 3.3.1 Overview Before delivery, each inverter is strictly checked and tested. To prevent any damage during transport, the case needs to be opened and checked before installation of energy storage inverter. The following should be checked: Check whether the items in the packing list are consistent with the real objects. -
Page 22: Model Check And Preparation
Equipment transport, storage and installation E10-12-RAD Insulated circular To fix the cable in AC to the wiring terminal terminal Tubular type pre-insulated terminals Including warranty card, certificate of quality, product warranty card, Documents pack ex-factory test report and user’s manual Ф2.5 Used to open the panel Internal hexagonal wrench... -
Page 23: Installation Requirements
Equipment transport, storage and installation * The above picture is only for reference. Please refer to the real object. (1) Product model and serial number (2) Technical parameters of inverter (3) Precaution, warning and certification label (4) Manufacturer Fig.3-3 Nameplate 3.5 Installation requirements 3.5.1 Environment requirements The inverter is designed for indoor use. - Page 24 It is recommended that the inverter should be installed at certain level in height so as to easy operation and follow-up maintenance. PWS2-30K-NA inverter is cooled by fan. The air flow direction is bottom inlet and side outlet. During installation, there should be sufficient space around the inverter so as to ensure enough installation and heat dissipation space, as shown in Fig.3-6.
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Page 25: Installation
Equipment transport, storage and installation >400mm >700mm >700mm >400mm Fig.3-6 Installation space of energy storage inverter 3.6 Installation 3.6.1 Inverter transport Take the case out of the external package and transport it horizontally to the designated installation position. Step 1: Two operators put their hands under the two ends of the inverter in the packing case to take out the inverter. - Page 26 Equipment transport, storage and installation Fig.3-8 Confirmation of drilling position Step 2: Use a percussion drill to punch holes and install the expansion bolts. The operation process is shown as follows: (1) Select a Ф10mm drill and use a percussion drill to punch the holes at the marked positions perpendicular to the wall.
- Page 27 Equipment transport, storage and installation Fig.3-10 Fix latch panel To prevent the dust from entering the respiratory tract or the eyes during drilling, operator should wear goggles and dustproof mask. Use a vacuum cleaner to clear the dust inside and outside the holes, measure the layout of holes.
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Page 28: Electrical Connection
Equipment transport, storage and installation Fig.3-12 Hanging the inverter 3.7 Electrical connection PWS2-30K-NA electrical wiring should strictly following the following requirements. Please read the following carefully. Before electrical connection, please ensure that all switches of energy storage system are in “OFF” state. Otherwise, the high voltage of the inverter might cause an electric shock risk. - Page 29 For detailed information, consult WARNING qualified technical service personnel. PWS2-30K-NA does not include GFDI function, and the system needs to configure BMS containing DC GFDI function. 3.7.2 Introduction to bottom of PCS Fig.3-14 Terminals...
- Page 30 Before connection of AC, DC and communication cables, the grounding wire should be connected first. It is recommended that the inverter should be grounded locally. For multiple PWS2-30K-NA parallel connection system, the grounding CAUTION points of all inverters should be connected with each other so as to ensure equal potential connection of grounding wires.
- Page 31 Equipment transport, storage and installation 3.7.5 DC wiring Step 1: Use a multi-meter to measure the voltage of battery, and ensure that the voltage is within input voltage range of energy storage inverter. Step 2: Turn off the DC breaker. Wiring operation can be conducted after using a multi- meter to measure and confirm that there is no voltage between positive and negative poles of DC input.
- Page 32 PWS2-30K-NA has three different communication interfaces: Ethernet, RS-485 and CAN. (1) Ethernet cable connection PWS2-30K-NA can be directly networked through Ethernet and connected to PC for communication. Through networking, users can remote dispatch energy, monitor operation state, and set parameters with background software in PC. The definition of RJ45 connector pin is shown in Fig.3-18.
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Page 33: Check After Installation
(4) Confirm that the communication cables of Ethernet and RS-485 have been connected correctly without open circuit and short circuit. (5) Confirm that the caps of Ethernet, RS-485, CAN and power cable have been screwed 3.8.2 Electric and communication check PWS2-30K-NA DC Breaker AC Switch AC Breaker... -
Page 34: Installation Of Bottom Cover
Equipment transport, storage and installation (1) Turn off AC switch S2 and breaker D3, turn on DC breaker D1, measure the voltage between “DC+” and “DC-” of DC wiring terminals of the inverter and ensure that it is within 200 ~ 750V. Otherwise, turn off DC breaker D1 and recheck the wiring in DC side. (2) Turn off DC breaker D1, turn on AC breaker D3, measure the voltage among “A”, “B”, “C”... -
Page 35: Chapter 4 Debug And Operation
Debugging and operation Chapter 4 Debug and operation 4.1 Startup and shutdown Startup steps can be conducted after energy storage inverter is installed and debugged by engineers, with the power switch closed. 4.1.1 Check before startup Before startup, check the device according to the following steps: (1) Visually inspect and ensure that there is no damage outside the module, and DC breaker D1 and AC breakers S2 and D3 are in “OFF”... -
Page 36: Power Regulation
Debugging and operation (1) Click Control in the interface of main menu of LCD touch screen, and click OFF. (2) Click Home to confirm whether the inverter is in standby state. (3) Turn off AC isolator S2 and AC breaker D3. (4) Turn off DC breaker D1 of battery pack. -
Page 37: Chapter 5 Hmi And Operations
HMI and operations Chapter 5 HMI and operations 5.1 Description This section introduces HMI (Human-Machine Interface) content and settable parameters. Relevant settings can be conducted via HMI. The HMI can display real time warning information, provide historical warning records for user’s query and offer a reliable basis for fault diagnosis. -
Page 38: Home Page
HMI and operations 5.3 Home page After HMI initialization, it enters Home page, as shown in Fig.5-3. Users can review system AC and DC voltage, AC and DC current, system charging and discharging and operation state. In this page, the arrow direction for power grid, inverter and battery connecting cable is a reference direction of electric energy flowing. -
Page 39: Battery Information
HMI and operations and > under the interface to turn page up or down, click to return the main menu. AC information is shown in Table 5-1. Table 5-1 AC information Name Identifier Description Unit Uab, Line voltage of AC output port of Voltage UbcandUca inverter... -
Page 40: Graph Display
HMI and operations Charging quantity CHGD Accumulated charging quantity of battery kW*h Accumulated discharging quantity of Discharging quantity DCHGD kW*h battery Temperature DC power module temperature of inverter ℃ Fig.5-6 DC information 5.4.3 Graph display Click Graph in the left side to enter the graph display. This interface can display the curve for charging and discharging power of inverter in current day. -
Page 41: Control Parameter
HMI and operations Fig.5-8 Warnings interface Click Historical Warnings to enter the historical warning interface. This interface includes three columns: “number”, “message” and “time end of warning”. Click < and > under the interface to turn page up or down, click to return the main menu, as shown in Fig. - Page 42 Click > under the interface to turn page up to enter the inverter on-grid and off-grid control interface. PWS2-30K-NA energy storage inverter can operate in on-grid mode and off-grid mode. During on-grid operation, close the isolator S2 in AC and the breaker D3 (the breaker between the inverter and the power grid.), and set the energy storage inverter in on-grid...
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Page 43: Settings
HMI and operations range±1Hz Regulate the active Active power power of AC in on-grid Active Power regulation mode. Regulated range ±30kW On-grid mode Regulate the reactive Reactive power Reactive power of AC in on-grid regulation Power mode. Regulated range ±30kVar When the dispatched apparent power exceeds 30kVA, the output of active power will be restricted by reactive power, and the system will give priority to reactive output. -
Page 44: Hmi Parameters
HMI and operations Fig.5-14 Battery parameters setting Table 5-4 Content of battery parameters setting Name Identifier Description Constant Float Charging Set as per to battery manufacturer's charging Voltage recommendation. voltage Trickle Slow Charging Set as per to battery manufacturer's charging Voltage recommendation. -
Page 45: Debug Interface
HMI and operations Fig.5-15 HMI parameter setting Table 5-5 Content of HMI parameters setting Name Identifier Description Internet protocol address for PWS2-30K-NA in IP address IP Address networking Subnet mask Subnet Mask Default Gateway gateway Modbus ID address of PWS2-30K-NA in Modbus... -
Page 46: Hardware Parameters
HMI and operations page down, and click to return the main menu. This debugging interface is used by Sinexcel electrical maintenance engineer when checking machine operation state or fault. Users cannot conduct any operation. Any loss arising from customers’ modifying the WARNING parameters in this interface will be undertaken by customers. -
Page 47: Chapter 6 Communication Mode
6.1.1 RS-485 interface RS-485 interface is reserved at the bottom of PWS2-30K-NA and used to communicate with EMS. As an energy dispatching unit for energy storage system, EMS accepts remote dispatching, receives BMS information and realizes control and protection of automatic charging and discharging of energy storage system. -
Page 48: Bms Communication
Fig. 6-2 Inverter connecting with EMS through Ethernet 6.2 BMS communication PWS2-30K-NA supports communication with BMS. It can obtain and detect basic state and protection information from BMS, close the energy storage inverter according to the protection state of storage battery fault and improve the safety of battery pack. RS-485 is adopted for communication between energy storage inverter and BMS, as shown in the following diagram. - Page 49 Communication mode energy storage inverters. This has provided great convenience for detecting and controlling the operation of energy storage inverters. The overall structure diagram for system networking is shown in Fig. 6-4. Remote Dispatching Center Ethernet Ethernet Ethernet Switch Energy Storage Energy Storage Inverter Inverter...
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Page 50: Chapter 7 Maintenance
Maintenance Chapter 7 Maintenance 7.1 Operation environment requirements Temperature: -20~60℃ ⚫ Humidity: 0~95% (non-condensing) ⚫ ⚫ Max. elevation: 4,000m It is recommended that the operating temperature should be maintained between -20~45℃ so as to ensure the best performance of the convert. If the temperature is too high or low, it will shorten the service life of inverter. -
Page 51: Appendixes
Appendix I Appendixes Appendix I: Fault list of energy storage inverter Table 1 presents the visible fault types of energy storage inverter. From this table, users can simply and quickly identify the system faults based on the fault types displayed on HMI. Table 1 Fault list Fault codes Fault type... - Page 52 Appendix I environment CAN A fault communication There is a communication fault in the inverter. fault 15V power F 15V power fault 15V power voltage is too low. DC bus Ubus O/V The DC bus voltage in the inverter is too high. overvoltage DC bus under- Ubus U/V...
- Page 53 Appendix I Failure of Bus soft start busbar soft Fail in the establishment of DC busbar. start DC battery has overcurrent. Load needs to be DC O/A DC overcurrent reduced. Otherwise, shutdown will occur due to overload. - 49 -...
- Page 54 As for the products requiring repair, users should give reasonable and sufficient time. We apologize for any inconvenience caused to you. (3) In case of any of the following circumstances, Sinexcel will not offer any quality assurance: ⚫...
- Page 55 Installation records Installation records - 51 -...
- Page 56 Feedback Feedback - 52 -...
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