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Sofar PowerMaster User Manual

Smart string energy storage system
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PowerMaster
Smart String
Energy Storage System
User Manual
1
Document Version 01 (2023-06-10) i

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Summary of Contents for Sofar PowerMaster

  • Page 1 PowerMaster Smart String Energy Storage System User Manual Document Version 01 (2023-06-10) i...

  • Page 2: Table Of Contents

    PowerMaster Smart String Energy Storage System User Manual Contents Preface..................................5 1. Safety Precautions ...............................8 1.1 Physical security ............................9 1.2 Equipment Safety ............................12 1.2.1 Energy Storage System Safety ....................12 1.2.2 Battery safety ..........................13 1.3 Environmental requirements ....................... 16 2.
  • Page 3 PowerMaster Smart String Energy Storage System User Manual 5.1.2 Short circuit protection ......................62 5.1.3 Grounding requirements ......................63 5.1.4 Antistatic requirements ......................64 5.2 Wiring overview diagram ........................64 5.3 Wiring preparation ..........................66 5.3.1 Preparation of installation tools ....................66 5.3.2 Preparing the cable ........................67 5.3.3 Cable crimping and connection ....................
  • Page 4 PowerMaster Smart String Energy Storage System User Manual 7.5.9 Routine maintenance ....................... 125 7.5.10 Contents of quarterly inspections ..................125 7.5.11 Contents of annual inspections ..................127 7.5.12 Maintenance cycle schedule for critical components ..........128 7.5.13 Component maintenance ..................... 129 7.5.14 Liquid-cooling pipework maintenance ................148...

  • Page 5: Preface

    This document mainly introduces the installation, electrical connection, commissioning and troubleshooting of PowerMaster Smart String Energy Storage System (referred to as Energy Storage System). Please read this manual carefully to understand the safety information and familiarize yourself with the functions and features of the Energy Storage System before installing and using the Energy Storage System.
  • Page 6 (including software, etc.), or reproduce or distribute in any form or by any means. SOFAR SOLAR. reserves the right of final interpretation. This manual can be updated according to the feedback from users or customers.
  • Page 7 PowerMaster Smart String Energy Storage System User Manual failure or property damage. Instruction  Additional information in the manual, which emphasises and supplements the content, may also provide tips or tricks for optimal use of the product that can help you solve a problem or save you time.

  • Page 8: Safety Precautions

    PowerMaster Smart String Energy Storage System User Manual 1. Safety Precautions Statement Before transporting, storing, installing, operating, using or/and maintaining this product, read this manual, follow it strictly and follow all safety precautions marked on the product and in the manual.

  • Page 9: Physical Security

    PowerMaster Smart String Energy Storage System User Manual ● Damage caused by you or a third party through negligence, intent, gross negligence, mishandling, or for reasons not attributable to us. 1.1 Physical security Danger  Lethal high voltage is present inside the device! ...
  • Page 10 PowerMaster Smart String Energy Storage System User Manual Notice  Emergency evacuation of the site should be carried out when the fire audible and visual alarms are triggered. The lifting and transport, installation and wiring, operation and maintenance of the BESS must be carried out by specialized technicians in accordance with local codes.
  • Page 11 PowerMaster Smart String Energy Storage System User Manual  Operators of medium voltage equipment must hold a high voltage electrician's license.  Keep persons other than those operating the equipment away from the equipment.  The installation process is strictly prohibited to operate with power on. It is prohibited to install or remove cables with power on.

  • Page 12: Equipment Safety

    PowerMaster Smart String Energy Storage System User Manual  Do not power up the unit without completing the installation or without professional confirmation.  It is prohibited to contact the power supply equipment directly, with other conductors or indirectly through wet objects, and the voltage at the point of contact should be measured before contacting any conductor surface or terminal to confirm that there is no danger of electric shock.

  • Page 13: Battery Safety

    PowerMaster Smart String Energy Storage System User Manual limited to GB 51048-2014 Design Code for Electrochemical Energy Storage Power Plants, NFPA 855 Standard for the Installation of Stationary Energy Storage Systems Code Requirements.  The energy storage system should be inspected for fire protection on a regular basis, not less than once a month.
  • Page 14 Abnormal functioning of the product or damage to parts, personal safety accidents, property damage, etc. caused by the following reasons are not within the scope of SOFAR responsibility.  Loss of capacity or irreversible damage to the battery due to overdue charging of the battery by the customer, etc;...
  • Page 15 PowerMaster Smart String Energy Storage System User Manual  Battery damage caused by over-discharge of the battery due to the customer's failure to power up the battery in time;  Battery damage caused by charging and discharging with improper equipment due to the customer;...

  • Page 16: Environmental Requirements

    PowerMaster Smart String Energy Storage System User Manual  Battery-related operations must be carried out by professionals, operating without wearing standard protective equipment caused by personal safety accidents, property damage and so on;  Battery damage caused by behaviours such as eating, drinking and smoking in the vicinity of the battery;...
  • Page 17 PowerMaster Smart String Energy Storage System User Manual  It is strictly prohibited to install and operate the equipment beyond the range specified in the technical specifications, otherwise the performance and safety of the equipment will be affected.  Installation, use and operation of outdoor equipment and cables (including...
  • Page 18 PowerMaster Smart String Energy Storage System User Manual  When mounting the equipment, make sure that the mounting surface is sturdy and meets the equipment's load-bearing requirements.  All alignment holes need to be sealed, use sealing clay to seal aligned alignment holes and use the cover that comes with the unit to seal unaligned alignment holes.

  • Page 19: Products

    It achieves the temperature balance of the battery cell, high efficiency and long service life, and facilitates installation, operation, and maintenance, etc. And on the AC side, PowerMaster can connect smart string 3.44MW energy storage converter with a 3.44MW medium-voltage transformer to form an integrated solution with low cost of electricity, high efficiency and flexibility, ultimate safety, intelligence and stability.
  • Page 20 PowerMaster Smart String Energy Storage System User Manual batteries, short lifespan, low efficiency, and easy condensation in the liquid-cooled battery compartment, etc. The main philosophy of the air-liquid hybrid intelligent cooling system is the homogeneous flow liquid-cooled piping system, which is designed to achieve the same cooling effect between the battery cells, resulting in a better cooling effect and a smaller temperature difference.
  • Page 21 Figure 2.2 Fan disc in the wind-liquid mixing intelligent temperature control system  Modular design PowerMaster has a modular design for the battery compartment. The purpose of modular design is to reduce the difficulty of operation and maintenance in the later stage and to improve the product delivery capability.

  • Page 22: External Dimensions

     Packaging design In terms of reducing the footprint, PowerMaster uses 20-foot containers, but also carries out a design that combines boxes and connects them into 40-foot containers to further reduce the footprint.
  • Page 23 PowerMaster Smart String Energy Storage System User Manual Figure 2.3 BESS External Dimensions Maximum door opening size: Figure 2.4 Maximum door opening size for BESS...

  • Page 24: Introduction To Components

    PowerMaster Smart String Energy Storage System User Manual 2.4 Introduction to Components 2.4.1 Introduction of components (closing doors) Figure 2.5 Presentation of BESS components (closed door) *The above pictures are for reference only, please refer to the actual object received!
  • Page 25 PowerMaster Smart String Energy Storage System User Manual button Fire start/stop Fire suppression system emergency start button and stop air inlet Container air intake In case of internal ignition/explosion, venting window directional venting is carried out. exhaust vent Container exhaust...

  • Page 26: Introduction Of Components (Opening Doors)

    PowerMaster Smart String Energy Storage System User Manual 2.4.2 Introduction of components (opening doors) Figure 2.6 Introduction to BESS components (open door) Quantity instructions Item containers For temperature and humidity control of wind disc electrical and battery compartments. High voltage...

  • Page 27: Battery Systems

    PowerMaster Smart String Energy Storage System User Manual module (*2) Firefighting Fire gas storage bottles Battery pack (with battery management PACK unit) Single Cluster Battery Maintenance MSD box Switch Liquid-cooled Liquid Cooling Systems units Table 2.2 Description of BESS components (open door) 2.4.3 Battery systems...
  • Page 28 PowerMaster Smart String Energy Storage System User Manual Dimensions 6058*2438*2896mm (W*D*H) weights ~34T Standards & GB36276/IEC62619/UL97 Certifications 3/UL9540A/UN3536 Table 2.3 Battery system specification parameters Specification of battery cell Cell Type Nominal 280Ah/896Wh capacity/energy rated voltage 3.2V 2.5-3.65V Temperature T Operating voltage ＞0℃...
  • Page 29 PowerMaster Smart String Energy Storage System User Manual Charge/dischar ≤0.5P ge ratio Working environment -30℃～55℃ temperature Relative humidity of 0 to 95% working environment Working ≤4000m altitude Cooling method liquid cooling Fire Fighting PACK fire protection Methods (perfluorohexanone) communication interface...

  • Page 30: Distribution Systems

    PowerMaster Smart String Energy Storage System User Manual Relative humidity 0 to 100% (no of working condensation) environment Working altitude ≤4000m Cooling method liquid cooling Fire Fighting Perfluorohexanone gas fire Methods protection communication CAN, Dry Contact interface Dimensions 1050*1105*2400mm (W*D*H) weights ≤3.2T...
  • Page 31 PowerMaster Smart String Energy Storage System User Manual Table 2.7 High Pressure Box Specifications Auxiliary power modules Three-phase Inlet method four-wire (AC 380V) operating voltage Auxiliary load power Max 34kW 2-way (powered indication, indicator light running indication) Working environment -30℃～55℃...

  • Page 32: Fire-Fighting Systems

    PowerMaster Smart String Energy Storage System User Manual 2.4.5 Fire-fighting systems Danger  If there is an obvious fire or even explosion at the site, it is forbidden to risk approaching the BESS for emergency start-up operations.  Equipment automatically extinguish the fire will produce a large amount of gas,...
  • Page 33 PowerMaster Smart String Energy Storage System User Manual temperature detector and combustible gas detector. When an abnormality is detected by combustible gas detection equipment, smoke detectors, temperature detectors and etc., the main unit of the fire controller carries out a fire alarm, controls...
  • Page 34 PowerMaster Smart String Energy Storage System User Manual Figure 2.8 Schematic diagram of cabin Figure 2.9 Schematic diagram of PACK level fire protection level fire protection 2.4.5.3 Water fire protection design The water fire protection system consists of water fire protection fittings, lines, and nozzles.

  • Page 35: Thermal Management Systems

    PowerMaster Smart String Energy Storage System User Manual 2.4.5.4 Fire start/stop button functionality Item activatio When pressed, the fire n button protection system is activated. reset When pressed, the fire system button can reset the state. When pressed, the fire...
  • Page 36 PowerMaster Smart String Energy Storage System User Manual module ensures that no condensation occurs in the battery compartment by switching on the dehumidification function. Liquid cooling system consists of liquid cooling unit + inlet pipe + return pipe + PACK bottom pipe.

  • Page 37: Exhaust Systems

    PowerMaster Smart String Energy Storage System User Manual 2.4.7 Exhaust systems BESS adopts the ventilation design of "front & back air inlet, right side air outlet" as shown in the figure below. Figure 2.13 Schematic diagram of BESS venting 3. Transport and storage 3.1 Shipping Precautions...
  • Page 38 PowerMaster Smart String Energy Storage System User Manual  All personnel involved in loading, unloading and bolting should receive appropriate training, particularly in safety aspect. Caution  Failure to transport and store in accordance with this manual may void the warranty.

  • Page 39: Storage Requirements

    PowerMaster Smart String Energy Storage System User Manual non-staff entering the lifting and transport area to avoid accidents;  The operation should be stopped in case of adverse weather conditions such as heavy rain, fog, strong winds, etc. during lifting;...
  • Page 40 PowerMaster Smart String Energy Storage System User Manual  Ambient temperature: 0℃～40℃, recommended storage temperature: 20℃～ 30℃;  Relative humidity: 5%RH to 80%RH;  Dry, ventilated and clean;  Avoid contact with corrosive organic solvents, gases and other substances;  The distance from the heat source must not be less than two metres;...

  • Page 41: Mounting

    PowerMaster Smart String Energy Storage System User Manual 4. mounting 4.1 Installation Requirements 4.1.1 Installation environmental requirements  The external environment meets the requirements of NFPA855 Design Code for Electrochemical Energy Storage Power Stations.  The equipment should be installed in an area away from liquids, and should not be installed under water pipes, air outlets and other locations that are prone to condensation;...

  • Page 42: Installation Operational Requirements

    PowerMaster Smart String Energy Storage System User Manual 4.1.2 Installation operational requirements  The work area should be well marked with warning signs and there should be at least one qualified supervisor responsible for industrial safety on site.  Operators must undergo relevant training and obtain relevant certificates of competence before taking up their duties.
  • Page 43 PowerMaster Smart String Energy Storage System User Manual the BESS. Therefore, the foundation of BESS installation must be designed and constructed in accordance with certain standards beforehand in order to meet the requirements of mechanical support, cable routing, and later maintenance and overhaul.
  • Page 44 0.1Ω;  The foundation is made according to the foundation plan provided by SOFAR, or the foundation plan confirmed by SOFAR. And the tolerance of the upper surface of the foundation is required to be ±5mm. The following points need to be clarified before foundation construction: ...

  • Page 45: Installation Space Requirements

    PowerMaster Smart String Energy Storage System User Manual 60%; the location of the ventilation holes is reasonably designed according to the field conditions, and the foundation through holes need to avoid the bearing point and the fixing point, and the ventilation shutter needs to satisfy the IP34 dust-proof and waterproof requirements.

  • Page 46: Foundation Base Plan

    PowerMaster Smart String Energy Storage System User Manual Figure 4.2 Packaged Box BESS Installation 4.2.3 Foundation base plan Note: This drawing is only a simple schematic, more detailed foundations please see the foundation plan provided by SOFAR, or after SOFAR to confirm the production of foundation plans.
  • Page 47 PowerMaster Smart String Energy Storage System User Manual Figure 4.3 Single-container foundation plan Figure 4.4 Diagram of the foundation of the two container combination...

  • Page 48: Lifting And Fixing

    PowerMaster Smart String Energy Storage System User Manual 4.3 Lifting and fixing 4.3.1 Preparation of tools Notice The handles of tools used, including socket wrenches, torque spanners,  screwdrivers, etc., need to be insulated or insulated tools used. Preparation tools The tools to be prepared before installing the equipment are shown below.
  • Page 49 PowerMaster Smart String Energy Storage System User Manual Digital or bubble marker steel tape measure level hydraulic press...
  • Page 50 PowerMaster Smart String Energy Storage System User Manual multimeter Crystal Head DC voltage range ≥ wire cutter Crimping Pliers dust catcher 1500V DC heat shrink tubing heat gun zip ties insulated ladder cable cars sling Table 4.1 Tools to be prepared before BESS installation...

  • Page 51: Pre-Installation Checks

    PowerMaster Smart String Energy Storage System User Manual Personal protection tools safety gloves protective glasses dust mask safety footwear reflective vest safety helmets medical kit Table 4.2 BESS Installation of Personal Protection Tools 4.3.2 Pre-installation checks Inspection of deliverables Check the completeness of the deliverables with the accompanying packing list.

  • Page 52: Lifting And Securing Operations

    PowerMaster Smart String Energy Storage System User Manual or have questions or if the equipment model does not match, contact your dealer. Warnings Only a complete and undamaged BESS should be installed!  4.3.3 Lifting and securing operations Prerequisite:  Before lifting, ensure that the crane and sling meet the load-bearing requirements;...
  • Page 53 PowerMaster Smart String Energy Storage System User Manual Personnel carrying out lifting operations are required to undergo relevant training and be qualified before they are allowed to work. Lifting tools need to be inspected and qualified, and tools are complete before use.
  • Page 54 PowerMaster Smart String Energy Storage System User Manual Lift the equipment gently, lift the equipment slowly, and the energy storage system should be dropped slowly and smoothly to avoid impact on the internal equipment. When the energy storage system comes into contact...
  • Page 55 PowerMaster Smart String Energy Storage System User Manual Step 3 After lifting, the BESS was reinforced and fixed to the concrete platform using the four L-angles delivered together. Figure 4.5 Schematic diagram of lifting BESS Step 4 Cut and remove the guard with a utility knife.
  • Page 56 PowerMaster Smart String Energy Storage System User Manual  Remove the guard only when it is not in severe weather conditions such as rain or snow. Instruction  The energy storage system has been protected during transport by the addition of guards to protect the energy storage system.
  • Page 57 PowerMaster Smart String Energy Storage System User Manual  Ensure that the expansion bolts are tightened when fixing the L-angle to the foundation. Figure 4.6 Fixing BESS using angles...
  • Page 58 PowerMaster Intelligent String Energy Storage System User Manual Inspection matters After the lifting of the energy storage system is completed, a post-installation inspection is required to ensure normal use and smooth subsequent installation. Inspection Inspection item Inspection criteria methods Are the bolts and nuts Bolts and nuts are tightened.

  • Page 59: Electrical Connection

    PowerMaster Intelligent String Energy Storage System User Manual 5. electrical connection Danger  High voltage danger! Electric shock hazard!  Do not touch live parts!  Make sure that both the AC and DC sides are uncharged before installation.  Do not place the unit on a flammable surface.

  • Page 60: Safety Precautions

    PowerMaster Intelligent String Energy Storage System User Manual 5.1 Safety Precautions 5.1.1 Wiring requirements ● Cable selection, erection and routing must follow local laws, regulations and codes. ● In the process of laying out the power supply line, it is strictly prohibited to have loops or twisting phenomena.
  • Page 61 PowerMaster Intelligent String Energy Storage System User Manual ● When external conditions (e.g., laying method or ambient temperature, etc.) change, cable selection should be verified by reference to IEC-60368-5-52 or local codes and regulations, e.g., whether the current-carrying capacity meets the requirements.

  • Page 62: Short Circuit Protection

    PowerMaster Intelligent String Energy Storage System User Manual 5.1.2 Short circuit protection ● When installing and maintaining the battery PACK, it is necessary to wrap the exposed cable terminals on the battery with insulating tape. ● Avoid foreign objects (e.g. conductive objects, screws, liquids, etc.) from entering the inside of the battery and causing a short circuit.

  • Page 63: Grounding Requirements

    PowerMaster Intelligent String Energy Storage System User Manual Warnings  When installing equipment that requires grounding, the protective earth wire must be installed first; when removing equipment, the protective earth wire must be removed last. Notice  No cables are allowed to pass through the air inlet or outlet of the equipment to avoid obstruction.

  • Page 64: Antistatic Requirements

    PowerMaster Intelligent String Energy Storage System User Manual power to prevent electric shock to the human body from the contact current of the equipment. 5.1.4 Antistatic requirements Static electricity generated by the human body can damage static-sensitive components on single boards, such as large-scale integrated circuits (LSI).
  • Page 65 PowerMaster Intelligent String Energy Storage System User Manual Figure 5.1 Wiring diagram *The graphic only depicts wiring principles that require field operation; internal wiring is for reference only. instructions note AC power cord 3P+N, AC380V, 50Hz...

  • Page 66: Wiring Preparation

    PowerMaster Intelligent String Energy Storage System User Manual b1~b2 DC Port Cable Connecting PCS CAN communication line optional RS485 communication cable PCS Communications CMU communication network optional cable CMU fault output dry contact optional line (NO, passive) Camera switch communication...

  • Page 67: Preparing The Cable

    PowerMaster Intelligent String Energy Storage System User Manual Torque Screwdriver Peeler Pliers Hydraulic Pliers Hot Air Guns Multimeter Screwdriver Torque spanner Scissors Crimping pliers Cutting pliers Network cable clamp Fiber optic stripper Figure 5.2 Installation tool preparation 5.3.2 Preparing the cable...
  • Page 68 PowerMaster Intelligent String Energy Storage System User Manual outdoor copper mm² core wire positive (withstand voltage not less than negative 1500V) DC Port Line Single-core 2*240mm²/3*150 M10 OT/DT side 2/3 wires outdoor copper mm² core wire positive (withstand voltage not less than...
  • Page 69 PowerMaster Intelligent String Energy Storage System User Manual ≤1.5Ω/10m I/O dry 4-core wire (0.5~2.5mm²)*4 Tube Cold Pressed optional contact signal cable (passive) Camera CAT 5E outdoor Shielded RJ45 Recomme switch shielded network Crystal Head nded for communicati cable, internal communic...

  • Page 70: Cable Crimping And Connection

    PowerMaster Intelligent String Energy Storage System User Manual (40mm×4mm)*4) steel are subject to the design of the design institute. Table 5.2 Cable preparation table Notice  The cables used should comply with local laws and regulations.  The cable colors involved in the illustrations in this manual are for reference only, please select cables according to local cable standards.
  • Page 71 PowerMaster Intelligent String Energy Storage System User Manual (1) Heat-shrinkable tubing (2) OT/DT terminals (3) Hydraulic tongs (4) Hot air guns Figure 5.3 OT/DT Terminal Crimping Figure 5.4 Cable Connection...

  • Page 72: Opening Cabinet And Equipment Box Doors

    PowerMaster Intelligent String Energy Storage System User Manual name name copper row bolt flat mat Copper Terminal Block springboard Table 5.3 Cable Connection Description 5.3.4 Opening cabinet and equipment box doors Step 1 Open the cabinet door of the equipment compartment.
  • Page 73 PowerMaster Intelligent String Energy Storage System User Manual Figure 5.6 Schematic diagram of fixed cabinet door Step 3 Open the case door of the sink module. Figure 5.7 Schematic diagram for Figure 5.8 Schematic diagram for switching switching on the sink module on the auxiliary power module Step 4 Open the box door of the auxiliary power module.

  • Page 74: Cable Entry Design

    PowerMaster Intelligent String Energy Storage System User Manual 5.3.5 Cable entry design The cables connecting the BESS to external equipment are uniformly routed through the bottom of the equipment compartment. All cables of the BESS should be well protected, such as laying through pipes, to prevent rodents from damaging the cables.

  • Page 75: Grounding

    PowerMaster Intelligent String Energy Storage System User Manual Figure 5.9 Schematic diagram of the cable entry and exit holes at the bottom of the BESS name name cable incoming position of the incoming position of the positive wire AC power...
  • Page 76 PowerMaster Intelligent String Energy Storage System User Manual Figure 5.10 Schematic diagram of BESS grounding *The above pictures are for reference only, please refer to the actual object received! Grounding flat steel Fix the grounding flat steel to the four grounding points of the box base with M10x30 screws, and spray the whole fixing surface after completion.

  • Page 77: Dc Port Cable Connection

    PowerMaster Intelligent String Energy Storage System User Manual instructions of the power station staff to install the external grounding. The grounding resistance shall be measured after the grounding connection is completed, and the resistance value shall not be greater than 4Ω.

  • Page 78: Ac Power Wire Connection (Auxiliary Power)

    PowerMaster Intelligent String Energy Storage System User Manual name name negative wiring position of DC port 2 positive wiring position of DC port 2 (rear row) (rear row) negative wiring position of DC port 1 positive wiring position of DC port 1 Table 5.5 DC Port Wiring Definition Table...
  • Page 79 PowerMaster Intelligent String Energy Storage System User Manual module. The AC power cable wiring is shown below. Figure 5.13 Schematic diagram of AC power cord connection Step 1 Thread the cable through the bottom sheath of the auxiliary power module and lead it to the corresponding wiring position according to the cable identification.

  • Page 80: I/O Dry Contact Signal Wires

    PowerMaster Intelligent String Energy Storage System User Manual 5.7 I/O dry contact signal wires The I/O dry contact signal wire wiring is located above the signal lightning protector. The dry contact wire wiring is shown below. Figure 5.12 Schematic diagram of signal line connection of fault input trunk node Figure 5.14 Schematic diagram of signal line connection of fault output trunk node...

  • Page 81: Communication Wire Connection

    PowerMaster Intelligent String Energy Storage System User Manual Step 3 Use wire strippers to strip the protective coating from the cable to expose the copper core. Step 4 Use crimping pliers to crimp the tube type terminals. Step 5 Use a one-pronged screwdriver (2~3mm) to connect the cable to the wiring position above the lightning protector.
  • Page 82 PowerMaster Intelligent String Energy Storage System User Manual power module and lead it to the corresponding wiring position according to the cable identification. Step 2 Cut the excessively long cable with wire cutters. Step 3 Use wire strippers to strip the protective coating from the cable to expose the copper core.

  • Page 83: Switch Communication Line Connection

    PowerMaster Intelligent String Energy Storage System User Manual Figure 5.16 Schematic diagram of CMU communication network cable connection Step 1 Pass the network cable through the wire sheath on the bottom of the auxiliary power module and lead it to the corresponding wiring position according to the cable identification.
  • Page 84 PowerMaster Intelligent String Energy Storage System User Manual Figure 5.17 Schematic diagram of switch communication connection network cable Refer to the CMU communication network cable in section 5.8 for the wiring procedure of the network cable. Fiber Step 1 Pass the optical fiber through the cable sheath at the bottom of the auxiliary power module and lead it to the corresponding wiring position according to the cable identification.

  • Page 85: Post-Wiring Operation

    PowerMaster Intelligent String Energy Storage System User Manual Step 5 Insert the optical fiber into the SFP optical module. Step 6 When wiring is complete, gently tug on the fiber to ensure that margin is left. 5.10 Post-wiring operation After all electrical connections have been made, the wiring should be thoroughly and carefully checked.

  • Page 86: Operation Procedure For Power On And Off

    PowerMaster Intelligent String Energy Storage System User Manual 6. Operation procedure for Power ON and Warnings  The BESS can only be put into operation after it has been confirmed by a professional and authorized by the local electricity authority.

  • Page 87: Power On Procedure Under Normal Conditions

    PowerMaster Intelligent String Energy Storage System User Manual Check that the wiring is correct. The guards inside the unit are securely installed. The emergency stop button is released. Check to make sure there are no ground faults. Use a multimeter to check that the AC and DC side voltages meet the starting conditions and that there is no danger of overvoltage.
  • Page 88 PowerMaster Intelligent String Energy Storage System User Manual Figure 6.1 Battery Cluster Positive and Negative Bus Plug Locations 2) Insert all MSD switches. Figure 6.2 MSD switch position Tip: Plugging and unplugging of the MSD switch is done by the handle. The handle is fitted with a locking tab, which needs to be pressed back into place to leave the handle in a locked position when the plug is fitted.
  • Page 89 PowerMaster Intelligent String Energy Storage System User Manual Figure 6.3 Locking tab compression 3) Manually close the QA1 main power switch and QA6 lightning protection switch in the auxiliary power module. The green light on the front door of the auxiliary power module should illuminate after closing the QA1 main power switch.
  • Page 90 PowerMaster Intelligent String Energy Storage System User Manual Figure 6.5 Auxiliary module QA3 single-phase power input switch position 5) Manually closing the QA5 power switch inside the auxiliary power module, after this step is completed, all BCUs inside the high voltage box and all BMUs inside the battery PACK will be able to power up and work, and the indicator light on the high voltage box will be illuminated.
  • Page 91 PowerMaster Intelligent String Energy Storage System User Manual Figure 6.7 Liquid cooler switch position within the auxiliary module 7) Manually close the main switch in the liquid cooler control box. When this step is completed, the liquid cooling system power-up is complete.
  • Page 92 PowerMaster Intelligent String Energy Storage System User Manual Figure 6.9 High Voltage Box Battery Disconnect Switch QB Position 9) The two convergence isolation switches (QB1 and QB2) in the system convergence module are manually switched to "ON". At this point, the manual...

  • Page 93: Normal Power Off Operation

    PowerMaster Intelligent String Energy Storage System User Manual Figure 6.10 System converging module disconnect switch locations 6.2 Normal power OFF operation When operating power-down, the battery disconnect switch QB on the high voltage box, the two converging disconnect switches inside the converging cabinet,...
  • Page 94 PowerMaster Intelligent String Energy Storage System User Manual module. Figure 6.12 Disconnect switch locations within the system converging module 4) Remove all MSD manual service switches. Figure 6.13 MSD switch position Tip: Before pulling out the plug of the MSD switch, it is necessary to lift up the locking tab on...
  • Page 95 PowerMaster Intelligent String Energy Storage System User Manual switch can be checked in the operation manual provided by the manufacturer. Figure 6.14 MSD switch locking tab raised 5) Unplug the battery cluster positive and negative bus plugs.
  • Page 96 PowerMaster Intelligent String Energy Storage System User Manual Figure 6.15 Battery Cluster Positive and Negative Bus Plug Locations 6) Disconnect the main switch inside the liquid cooler control box. Figure 6.16 Liquid Cooler Control Box Master Switch Location 7) Disconnect the QA2 liquid cooler switch in the auxiliary power module.
  • Page 97 PowerMaster Intelligent String Energy Storage System User Manual Figure 6.17 Liquid cooler switch position within the auxiliary module 8) Disconnect the QA5 power switch inside the Auxiliary Power Module. And after this step is completed, all BCUs inside the High Voltage Box and all BMUs inside the Battery PACK will be de-energized.
  • Page 98 PowerMaster Intelligent String Energy Storage System User Manual Figure 6.19 Auxiliary module QA3 single-phase power input switch position 10) Disconnect the RCD01 socket power switch and QA4 lighting power switch. Figure 6.20 Lighting Power and Outlet Power Switch Locations 11) Disconnect the AC main switch QA1 in the Auxiliary Module, the green light...

  • Page 99: Emergency Power Down Operation

    PowerMaster Intelligent String Energy Storage System User Manual (Auxiliary Module Operation Indicator) on the Auxiliary Module panel should go out. Figure 6.21 Auxiliary Power Module Green and Yellow Indicators (12) Close the upper auxiliary power module AC input level 1 power switch, the yellow light (external power supply indication) should go out.
  • Page 100 PowerMaster Intelligent String Energy Storage System User Manual inside the high voltage box should be disconnected immediately. Figure 6.22 Emergency Stop Button Switch Locations (based on actual design) 2) Disconnect battery disconnect switch QB on all high voltage boxes. Figure 6.23 High Voltage Box Battery Disconnect Switch QB Position 3) Disconnect the two converging disconnect switches in the system converging module.
  • Page 101 PowerMaster Intelligent String Energy Storage System User Manual Figure 6.24 Disconnect switch locations within the system converging module 4) Disconnect the QA1 main power switch inside the auxiliary power module. After this step of operation, the green light on the front door of the auxiliary power...
  • Page 102 PowerMaster Intelligent String Energy Storage System User Manual Figure 6.25 Location of the main power switch within the auxiliary power module 5) If necessary, disconnect the Auxiliary Power Module AC power upper switch, then the Auxiliary Power Module front door yellow light should go out.

  • Page 103: Routine Maintenance

    PowerMaster Intelligent String Energy Storage System User Manual 7. Routine maintenance Warnings  Please do not open the door of the battery box for maintenance in rainy, wet or windy weather, if you fail to avoid it, we will not be responsible for any damage caused.

  • Page 104: Maintenance Work (Once /One Or Two Years)

    PowerMaster Intelligent String Energy Storage System User Manual Check the cleanliness of the circuit board as well as the components. Check the temperature of the heat sink as well as the dust. If necessary, use a vacuum cleaner to clean the heat sink Internal Component module, etc.
  • Page 105 PowerMaster Intelligent String Energy Storage System User Manual Look for flammable objects on top of the box. Check that the welded joints between the box and the foundation steel plate are secure and that there is no rust or corrosion.

  • Page 106: Maintenance Work (Every Two Years)

    PowerMaster Intelligent String Energy Storage System User Manual Check for water seepage inside the box. Check the power cable connections for looseness and retighten them according to the torque previously specified. Check power and control cables for damage, especially cut marks on the skin in contact with metal surfaces.
  • Page 107 PowerMaster Intelligent String Energy Storage System User Manual Look for damage or deformation of the case and internal equipment. Check the internal equipment for abnormal noise during operation. Check for excessive temperatures inside the box machine. Check to see if the humidity and dust levels inside the box are within normal limits.

  • Page 108: Cabinet Maintenance

    PowerMaster Intelligent String Energy Storage System User Manual 7.4 Cabinet maintenance 7.4.1 Repair measures for cosmetic damage Inspect the exterior damage and choose the applicable option based on the different levels of damage. Option 1: Surface soiling can be wiped away...
  • Page 109 PowerMaster Intelligent String Energy Storage System User Manual surface. 2 If the surface cannot be scrubbed clean with water, scrub with 97% alcohol until the surface is within acceptable cleanliness limits. (Or using a non-corrosive cleaner commonly used locally.) Operational steps to perform maintenance for Option 2:...
  • Page 110 PowerMaster Intelligent String Energy Storage System User Manual try to keep the paint as even as possible. Operational steps to perform maintenance for Option 3: Cleaning Tools name Source of components sandpaper (i.e. abrasive) washcloth water Alcohol Not included in the scope of supply...

  • Page 111: Checking Door Locks And Hinges

    PowerMaster Intelligent String Energy Storage System User Manual try to keep the paint as even as possible. 7.4.2 Checking door locks and hinges After the cleaning work is completed, the cabinet door locks, hinges, etc. should be checked to see if they can be used normally and whether they are in good condition.
  • Page 112 PowerMaster Intelligent String Energy Storage System User Manual units and control & protection units, which satisfy the functions of heat dissipation and heating. For liquid supply unit, the cooling medium pumped into the plate evaporator by the main circulating pump. In the plate evaporator, refrigerant evaporation at constant pressure to absorb heat, and the cooling medium will have heat exchange with the refrigerant.

  • Page 113: Product Functions And Features

    PowerMaster Intelligent String Energy Storage System User Manual 7.5.3 Product Functions and Features Main components: Liquid-cooled temperature-controlled units include inverter compressor, plate evaporator, electric heater, circulating water pump, controller, frequency converter, electronic expansion valve, expansion tank and other components. 1) Inverter compressors Adopting well-known brand hermetic high-efficiency frequency conversion compressor, with large cooling capacity range, high operability and reliability.
  • Page 114 PowerMaster Intelligent String Energy Storage System User Manual lowered to achieve the effect of refrigeration. 4) expansion valve Expansion valve is an important part in refrigeration system, installed between liquid storage tank and evaporator. The medium temperature and high pressure...

  • Page 115: Checks Before Starting Liquid Cooling

    PowerMaster Intelligent String Energy Storage System User Manual such as current temperature, humidity, process status, alarms, etc. can be displayed on the screen in real time. 7.5.4 Checks before starting liquid cooling The following items should be checked before starting the liquid-cooled system...
  • Page 116 PowerMaster Intelligent String Energy Storage System User Manual Note 2: Liquid cooling system replenishment and exhaust operation should be carried out in the manual commissioning position of the electronic control system! All equipment is operated manually; the liquid cooling system should be switched to automatic operation after the liquid replenishment and exhausting are completed and the system is running normally.
  • Page 117 PowerMaster Intelligent String Energy Storage System User Manual After the system connection is completed, close the ball valves at the import and export of the unit (Fig. a), tighten and close the manual exhaust valve on the heater of the unit (Fig. b), and inject nitrogen into the unit from the unit's replenishment port (Fig.

  • Page 118: Cooling Liquid Replenishment

    PowerMaster Intelligent String Energy Storage System User Manual Open the exhaust valve Open the exhaust valve Primary backwater pipeline drain outlet Figure 7.2 a After holding pressure in the pipeline, manually open the drain valve (f) on the return pipe of the first-stage pipeline for air release until the pipeline is completely emptied of nitrogen for pressure holding, and then close the drain valve for replenishment operation.
  • Page 119 PowerMaster Intelligent String Energy Storage System User Manual  When switching on the refrigeration mode, the container door needs to be closed immediately after operating the exhaust of the secondary pipework to prevent condensing. The method of operation is as follows: Carry out the liquid refilling operation after doing the pressure maintaining test of the liquid cooling system.
  • Page 120 PowerMaster Intelligent String Energy Storage System User Manual hose. 2、After the connection, open the exhaust valve of the heater of the unit (Fig. b) (Note: this exhaust valve does not need to be closed in the process of replenishment and after the completion of replenishment) and the manual exhaust valve on the return pipe of the first stage pipeline (Fig.
  • Page 121 PowerMaster Intelligent String Energy Storage System User Manual 1bar, close the refill port ball valve, and then close the refill device to stop refilling. 4 、Open the unit self-circulation mode running for 10min. The pump running status is: pump speed actually accounted for 50%, the actual speed of the pump is 1800rpm.

  • Page 122: Drainage

    PowerMaster Intelligent String Energy Storage System User Manual water pump of the unit to guide the local stagnant air to the automatic exhaust valve to discharge, and it is necessary to confirm and ensure that the ball valves of the unit and the pipelines are open before turning on the circulating water pump.

  • Page 123: Cleaning

    PowerMaster Intelligent String Energy Storage System User Manual (2) Stop the equipment and disconnect the power supply; (3) Check that the guide pipe hoop attached to the lower end of the replenishment ball valve is tight; (4) The other end of the guide tube is placed in the liquid storage barrel, open the unit liquid supply ball valve, natural emptying.
  • Page 124 PowerMaster Intelligent String Energy Storage System User Manual 2、Start the replenishment unit to flush the liquid cooling system with coolant or deionized water (conductivity <5uS/m) for 15-20 minutes. 3、After completing the flush, close the replenishment ball valve and then close the replenishment unit.

  • Page 125: Routine Maintenance

    PowerMaster Intelligent String Energy Storage System User Manual 7.5.9 Routine maintenance This liquid-cooled unit uses a microprocessor and has no or very few malfunctions. In order to make the machine work more efficiently, it is recommended that the following be checked. According to the maintenance time is divided into quarterly and yearly.
  • Page 126 PowerMaster Intelligent String Energy Storage System User Manual 7) Check the pump operation noise, vibration, temperature, etc., whether the operation is normal, whether there is abnormal noise; 8) Check that the data from the upper computer is consistent with the data displayed in situ on the liquid-cooling system;...

  • Page 127: Contents Of Annual Inspections

    PowerMaster Intelligent String Energy Storage System User Manual Check are there any leaks in the pipework; The fan blades and wind ring are free of scratches; Check the heater current; Check the wiring for damage and deterioration; Check that the air inlet hole at the bottom of the liquid cooled unit is not blocked;...

  • Page 128: Maintenance Cycle Schedule For Critical Components

    PowerMaster Intelligent String Energy Storage System User Manual 9) Remove rust and paint the inside and outside surfaces of the outdoor parts of the liquid-cooled unit; 10) Instrument calibration need be carried out in accordance with the relevant regulations; 11) Tighten the terminals of each electrical component;...

  • Page 129: Component Maintenance

    PowerMaster Intelligent String Energy Storage System User Manual name replacement cycle note filter 8 years Sensor 8 years Automatic air 5 years venting valve Replacement on failure and each Flange Seal disassembly Power cable 15 years Need to test PH...
  • Page 130 PowerMaster Intelligent String Energy Storage System User Manual during routine maintenance. If there is such a situation or other operations are required, please contact the supplier immediately. Common Faults (Troubleshooting) Before opening the junction box and disassembling the pump, make sure that...
  • Page 131 PowerMaster Intelligent String Energy Storage System User Manual Bad wiring inside the motor Repair and maintain Unreasonable setting reset value thermal relay protection value Main pump inlet pressure too Check main pump inlet pressure Valve opening on the inlet side...
  • Page 132 PowerMaster Intelligent String Energy Storage System User Manual Water pump shaft seal Replacement of shaft Shaft seal damaged leakage seal Air in the pump body of the ventilate water pump Incorrect position of the water Adjust pump shaft excessive noise...
  • Page 133 PowerMaster Intelligent String Energy Storage System User Manual completed. Loosen the filter mounting bolts and slowly remove the cartridge. Take care to protect the seal during removal and replace the seal with a spare part if it is damaged. A certain amount of coolant is usually left on the inside of the filter element, so be careful when removing the filter element.
  • Page 134 PowerMaster Intelligent String Energy Storage System User Manual about 3 minutes of rinsing from the outside in, the high pressure water gun head will be evenly rinsed to the inside for about two minutes. 3) After rinsing inside and outside the cartridge, observe whether there are...
  • Page 135 PowerMaster Intelligent String Energy Storage System User Manual Figure 7.9 Three-piece ball valve 1) Run the liquid cooling system for 5 minutes and observe for leaks at the ball valves; 2) If leakage occurs, the stem nut at the handle must be locked again, be careful not to lock too tight, usually locked more 30°~60°, the leakage will stop, the stem nut...
  • Page 136 PowerMaster Intelligent String Energy Storage System User Manual 1) Stop the liquid-cooling unit and evacuate the ball valve section to be maintained; 2) Open the ball valve, remove the fastening bolts, take out the seal and seat to be replaced and replace them with new spare parts;...
  • Page 137 PowerMaster Intelligent String Energy Storage System User Manual 2) Loosen the fastening bolts, taking care to remove them slowly; 3) Separate the flanges at each end of the seal slightly and remove the seal to be replaced; 4) Place the new seal between the flanges, taking care that the seal is centered;...
  • Page 138 PowerMaster Intelligent String Energy Storage System User Manual Inspection 1) Check for loose transmitter wiring and tightened cable clamp connectors; 2) Check for leaks at the transmitter mounting ports . Maintenance and Replacement 1) Close the ball valve at the lower end of the transmitter (if not available, drain the system first);...
  • Page 139 PowerMaster Intelligent String Energy Storage System User Manual 3) If the bracket and its connecting bolts are corroded, after shutting down the system, wipe them carefully and spray them with anti-rust paint, then re-install and fix them; 4) If the bracket is loose, turn off the liquid cooling system, re-tighten the connections and start the system to see if the looseness is resolved;...
  • Page 140 PowerMaster Intelligent String Energy Storage System User Manual 3) When there is a hose bend that causes a change in flow, reposition the pipe so that the bend improves, start the system and observe if the problem is repaired; if the bend cannot be adjusted, the hose needs to be replaced.
  • Page 141 PowerMaster Intelligent String Energy Storage System User Manual Observation liquid bright exterior transparent, visual condition impurities, assessment precipitation, suspension, etc. Testing based on freezing <Coolant freezing coolant freezing freezer point point value point values at the site of use PH value 6.5-9...
  • Page 142 PowerMaster Intelligent String Energy Storage System User Manual coolants (different models, brands, etc.) cannot be mixed, the coolant in the replenishment, replacement, to ensure that it is always the same coolant; If it is necessary to replace the coolant, the original coolant must be drained and the system must be cleaned.
  • Page 143 PowerMaster Intelligent String Energy Storage System User Manual may be mechanically fouled, hardened, chemically fouled with high content, biologically fouled, slime bacteria and algae during long-term use. Therefore, it is necessary to inspect, purify and maintain the cooling medium in the liquid-cooling temperature-controlled unit system every 3 months.
  • Page 144 PowerMaster Intelligent String Energy Storage System User Manual 2) Records unit operating parameters at certain time intervals; 3) Check the evaporator and condenser pressures of the unit by the pressure meter display unit, according pressure-temperature cross-reference table, check the temperature difference between the evaporating temperature and the cooling water discharge temperature, and the temperature difference between the condensing temperature and the air discharge temperature.
  • Page 145 PowerMaster Intelligent String Energy Storage System User Manual no-closing sign at the switch position before maintenance and inspection! Regular maintenance includes quarterly and annual maintenance. It is important for the customer to formulate a scientific regular maintenance plan based on the following and to carry it out carefully to prevent problems from occurring.
  • Page 146 PowerMaster Intelligent String Energy Storage System User Manual more frequent. Excessive condensing pressure and insufficient cooling capacity of the unit is usually due to dirty fins clogging, or non-condensable gases in the unit. ● Check the insulation resistance between the compressor motor windings and between the windings to ground.
  • Page 147 PowerMaster Intelligent String Energy Storage System User Manual Coolant Quality Management Poor quality of coolant will not only scale in the evaporator, affecting the heat exchange efficiency and reducing the performance of the unit, but also corrode the heat transfer tubes resulting in major failures of the unit. Customers should follow...

  • Page 148: Liquid-Cooling Pipework Maintenance

    PowerMaster Intelligent String Energy Storage System User Manual contains refrigerant oil, therefore, the infiltration of the general may be a small amount of oil stains, when found that a connection with oil stains, this may be the leakage point. Refrigerant leakage detection method two: soapy water leak detection method.
  • Page 149 PowerMaster Intelligent String Energy Storage System User Manual Check the following during the annual inspection: Annual inspections are generally performed to maintain the system when it is out of service, and for matters that cannot be resolved online during daily operation.
  • Page 150 PowerMaster Intelligent String Energy Storage System User Manual Operation and maintenance of secondary and tertiary pipelines Check the following during quarterly inspections: 1) Pipe connection fittings are checked; 2) Seal check; 3) Drain valve check; 4) Exhaust valve inspection; 5) Are there any leaks in the lines;...

  • Page 151: Maintenance Of Fire-Fighting Systems

    PowerMaster Intelligent String Energy Storage System User Manual Maintenance shall be carried out without any damage or abnormalities; The pipe should not be damaged during dismantling, and should be isolated and stored after dismantling, without collision with sharp objects and without extrusion of heavy objects;...
  • Page 152 PowerMaster Intelligent String Energy Storage System User Manual module at least once a year. Emergency start and It should be ensured that the start and Fire start/stop button stop function for stop function of each on-site start/stop on-site fire fighting...
  • Page 153 PowerMaster Intelligent String Energy Storage System User Manual loosely connected terminals; replace the screws, terminal spacers, and other wiring components that have traces of corrosion; and reconnect the corroded wire ends after removing the corrosion and stamping them with tin.
  • Page 154 PowerMaster Intelligent String Energy Storage System User Manual desiccant can be placed inside the cabinet. Measure the power supply voltage of the detector or module at the end of the controller bus circuit with a multimeter, and replace the circuit board or adjust the line if the voltage value is less than the value specified in the manual.
  • Page 155 PowerMaster Intelligent String Energy Storage System User Manual  The connecting pipe should be free of deformation, cracks and aging. If necessary, send them to statutory quality inspection agencies for testing or replacement.  Each nozzle orifice should be free of clogging.

  • Page 156: Monitoring System Commission

    PowerMaster Intelligent String Energy Storage System User Manual 8. Monitoring system commission The monitoring system WEB interface operation includes communication cable wiring, communication settings, login interface, home page, battery cluster information, real-time alarms, parameter configuration, historical data, logging out and other displays or operations.

  • Page 157: Login Screen

    PowerMaster Intelligent String Energy Storage System User Manual 255.255.255.0, and leave the rest of the settings as default. Click OK to complete the settings, as shown in Figure 8.1 and 8.2. Figure 8.1 Computer Ethernet Properties Figure 8.2 Computer IP Address Settings 8.3 login screen...
  • Page 158 PowerMaster Intelligent String Energy Storage System User Manual Figure 8.3 Login screen Figure 8.4 Home Topology Interface...

  • Page 159: Home Main Interface

    PowerMaster Intelligent String Energy Storage System User Manual Home main interface On the Home main screen, click the icon, as shown in Figure 8.7. Status data display on the home page: Figure 8.5 Home Page Status Data Graph Charge/discharge power curve, click the calendar control to select the corresponding date: Figure 8.6 Charging and Discharging Power Curves...
  • Page 160 PowerMaster Intelligent String Energy Storage System User Manual Figure 8.7 Main interface diagram Cumulative charge/discharge statistics, click the calendar control to select the corresponding date: Figure 8.8 Cumulative charge/discharge graphs Topology diagram showing the switching states corresponding to the battery...
  • Page 161 PowerMaster Intelligent String Energy Storage System User Manual Figure 8.9 Topological diagrams Control Commands: Figure 8.10 Control Command Diagram Operation Log: Figure 8.11 Operation log diagram Click "→" to display the detailed data, as shown in Figure 8.13. Click the...
  • Page 162 PowerMaster Intelligent String Energy Storage System User Manual Fault Log: Figure 8.12 Fault Log Diagram Figure 8.13 Detailed data charts Click "→" to display the detailed data, as shown in Figure 8.14.

  • Page 163: Battery Cluster Information Screen

    PowerMaster Intelligent String Energy Storage System User Manual Figure 8.14 Detailed data charts Click the icon to return to the previous page. 8.5 Battery Cluster Information Screen Click on the Battery Cluster Information icon as shown in Figure 8.15. Figure 8.15 Battery cluster information...

  • Page 164: Real-Time Alarm Interface

    PowerMaster Intelligent String Energy Storage System User Manual 8.6 Real-time alarm interface Click on the Real Time Alerts icon as shown in Figure 8.16. Figure 8.16 Real-time alarm diagram 8.7 Parameter Configuration Interface Click parameter configuration icon as shown in Figure 8.17.

  • Page 165: Historical Data Interface

    PowerMaster Intelligent String Energy Storage System User Manual Figure 8.17 Parameter Configuration Diagram 8.8 Historical Data Interface Click Historical Data icon as shown in Figure 8.18. Figure 8.18 Historical Data Graph...
  • Page 166 PowerMaster Intelligent String Energy Storage System User Manual Click the icon to toggle the chart, as shown in Figure 8.19. Figure 8.19 Historical Data Chart Click to filter the data to be displayed. Figure 8.20 Filtering Historical Data Chart Click calendar control, you can filter the data in the corresponding time period, maximum 30 days.
  • Page 167 PowerMaster Intelligent String Energy Storage System User Manual time period is less than 3 days; the default display time is 30 minutes if the selected time period is greater than or equal to 3 days and less than 10 days; the default display time is 60 minutes if the selected time period is greater than or equal to 10 days and less than or equal to 30 days.

  • Page 168: Log Out

    PowerMaster Intelligent String Energy Storage System User Manual Click to export the data displayed for the currently selected item to a report file (.xlsx). 8.9 Log out Click the icon in the upper right corner to return to the login screen.

  • Page 169: Contact Details

    PowerMaster Intelligent String Energy Storage System User Manual 9. contact details If you have any questions about this product please get in touch with us. Contact number: 400-892-5766 Address: No.1 Dongsheng North Road, Chenjiang Street, Zhongkai Hi-Tech Zone, Huizhou City, Guangdong Province, China.

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