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KEHUA TECH BCS-B-HM Series User Manual

Power conversion system
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Power Conversion System
BCS-B-HM Series (75K-125K)
User Manual

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  • Page 1 Power Conversion System BCS-B-HM Series (75K-125K) User Manual...
  • Page 3 Copyright © Kehua Data Co., Ltd. 2021.All rights reserved. No part of this document may be reproduced or transmitted in any form or by any means without prior written consent of Kehua Data Co., Ltd. Trademarks and Permissions and other Kehua trademarks are trademarks of Kehua Data Co., Ltd. All other trademarks and trade names mentioned in this document are the property of their respective holders.
  • Page 4 Power Conversion System BCS-B-HM Series (75K-125K) Foreword User Manual Foreword Summaries Thank you for choosing the Kehua's power conversion system (hereinafter referred to as PCS)! This document gives a description of the PCS, including appearance, features, working principles, installation, electrical connection, operation, maintenance and storage, etc.
  • Page 5 Power Conversion System BCS-B-HM Series (75K-125K) User Manual Foreword Symbol Description Be care electric shock prompting. Provides a tip that may help you solve a problem or save time. Provides additional information to emphasize or supplement important points in the main text.

  • Page 6: Table Of Contents

    Power Conversion System BCS-B-HM Series (75K-125K) Contents User Manual Contents 1 Safety Description......................... 1 1.1 Safety Announcements ............................. 1 1.1.1 Use Announcements ..........................1 1.1.2 Energy Storage Battery Protection ......................3 1.1.3 ESD Protection ............................3 1.1.4 Grounding Requirements ........................3 1.1.5 Moistureproof Protection ........................
  • Page 7 Power Conversion System BCS-B-HM Series (75K-125K) User Manual Contents 2.5.2 Communication to BMS ........................18 3 Installation............................ 20 3.1 Installation Process ............................20 3.2 Unpacking and Checking ..........................21 3.3 Selection of Installation Site .......................... 21 3.3.1 Installation Environment ........................21 3.3.2 Installation Clearance ..........................
  • Page 8 Power Conversion System BCS-B-HM Series (75K-125K) Contents User Manual 4.3 Shut Down the PCS ............................49 5 Maintenance and Troubleshooting ..................50 5.1 Maintenance ..............................50 5.1.1 Maintenance Details and Period ......................50 5.1.2 Maintenance Guide ..........................51 5.2 Troubleshooting .............................. 53 6 Stop Running, Dismantle, Discard ..................

  • Page 9: Safety Description

    Power Conversion System BCS-B-HM Series (75K-125K) User Manual 1 Safety Description 1 Safety Description This chapter mainly describes the safety announcements. Prior to performing any work on the device, please read the user manual carefully, follow the operation and installation instructions and observe all danger, warning and safety information.
  • Page 10 Power Conversion System BCS-B-HM Series (75K-125K) 1 Safety Description User Manual There is no operational part inside the device. Please do not open the crust by yourself, or it may cause electric shock. The device damage caused by illegal operation is out of the guarantee range.

  • Page 11: Energy Storage Battery Protection

    Power Conversion System BCS-B-HM Series (75K-125K) User Manual 1 Safety Description 1.1.2 Energy Storage Battery Protection There exists dangerous high voltage between the positive and negative of energy storage battery! If touching by accident, it may cause electric shock or human injury! When maintaining the device, make sure that the connection between the PCS and energy storage battery has been disconnected completely.

  • Page 12: Moistureproof Protection

    Power Conversion System BCS-B-HM Series (75K-125K) 1 Safety Description User Manual 1.1.5 Moistureproof Protection Moisture invasion may cause the device damage! Observe the following items to ensure the PCS works normally.  When the air humidity is more than 95%, don't open the cover of the PCS.

  • Page 13: Live Line Measurement

    Power Conversion System BCS-B-HM Series (75K-125K) User Manual 1 Safety Description 1.1.8 Live Line Measurement There exists high voltage in the device. If touching the device accidently, it may cause electric shock. So, when perform measurement under operation, it must take protection measure (such as wear insulated gloves, etc.)

  • Page 14: Others

    Power Conversion System BCS-B-HM Series (75K-125K) 1 Safety Description User Manual  Ensure that the PCS cannot reconnected by accident.  Ensure that the inner PCS has no electricity by multimeter.  Perform necessary grounding connection.  Cover the part that may with electricity by insulation material.

  • Page 15: Overview

    PCS. 2.1 Product Intro BCS-B-HM series power conversion system is independently researched and developed by Kehua Company. It can be used in energy storage link. The basic characteristic is bidirection (rectification, inverter), and also, it has a series of special performance. It can be used in condition of grid-tied and off-grid.

  • Page 16: Features

    Power Conversion System BCS-B-HM Series (75K-125K) 2 Overview User Manual Grid-tied operation of the PCS needs to obtain the permission of local power supply department and performed by professionals. The grid form supported by the PCS is shown in Figure2-2.

  • Page 17: Model Meaning

    Power Conversion System BCS-B-HM Series (75K-125K) User Manual 2 Overview Flexible and conveniently  Convenient modular design, which makes the installation more easily, and decrease the maintenance costing.  Support the AC parallel operation of several PCS. The system scheme configuration is flexible.
  • Page 18 Power Conversion System BCS-B-HM Series (75K-125K) 2 Overview User Manual Figure2-4 Appearance Table2-1 Component illustration Name Illustration ○ Display panel It is used to indicate the current work status of the PCS. ○ AC breaker It is the connection switch of the PCS and grid.
  • Page 19 Power Conversion System BCS-B-HM Series (75K-125K) User Manual 2 Overview Figure2-5 Operation panel Table2-2 Indicator status illustration Silk-screen Color Meaning Status illustration On: the inner power of the PCS has been established. Work power ○ POWER Green indicator Off: the inner power of the PCS has not been established.
  • Page 20 Power Conversion System BCS-B-HM Series (75K-125K) 2 Overview User Manual AC breaker and DC switch ○ The AC breaker (the position is shown as 2 in Figure2-4) is the connection switch between the ○ PCS and the grid. DC switch (the position is shown as 3 in Figure2-4) is the connection switch between the PCS and battery.

  • Page 21: Dimensions

    Power Conversion System BCS-B-HM Series (75K-125K) User Manual 2 Overview Mark Illustration Remarks ○ COM. Communication wiring hole Used to connect the communication wires Used to connect the wire of auxiliary ○ Auxiliary power wiring hole power Used to connect the communication wire ○...

  • Page 22: Work Mode

    Power Conversion System BCS-B-HM Series (75K-125K) 2 Overview User Manual During discharging, the current pass through the DC bus and then through three-phase inverter and output filtering to generate sinusoidal AC. When off-grid, the AC output is supplied to load, and when grid-tied, the output is fed into the grid, as shown in Figure2-8.

  • Page 23: Communication

    Power Conversion System BCS-B-HM Series (75K-125K) User Manual 2 Overview 2.5 Communication The PCS has multiple communication methods, the communication to the upper-computer includes Ethernet, RS485, Bluetooth, WIFI (optional), and users can easily obtain the current operation data of the PCS. The communication to BMS includes CAN and RS485.
  • Page 24 Power Conversion System BCS-B-HM Series (75K-125K) 2 Overview User Manual Figure2-11 RS485communication interface location …… PCS 1 PCS 2 PCS N Monitor platform N≤20 Figure2-12 RS485 communication (multiple PCSs) The baud rate of the PCS needs to be set by Kehua Company's monitor software WiseEnergy (details please refer to the About-User Manual of WiseEnergy).
  • Page 25 Power Conversion System BCS-B-HM Series (75K-125K) User Manual 2 Overview Figure2-13 Position of SW1 The communication address of the PCS cannot conflict. Bluetooth Communication Bluetooth communication mainly used to display monitor, user can maintain and monitor the PCS by Bluetooth on the APP of phone. For the download way of APP, please see the illustration of WIFI communication.

  • Page 26: Communication To Bms

    Power Conversion System BCS-B-HM Series (75K-125K) 2 Overview User Manual  Method 1: download the APP via following application market. 1. Application market (for Android user). 2. APP store (iOS).  Method 2: scan the QR code below to download and install the APP in accordance with the prompting.
  • Page 27 Power Conversion System BCS-B-HM Series (75K-125K) User Manual 2 Overview Figure2-16 Position of input, output dry contact (reserved) Table2-4 Illustration for input, output dry contact Port Illustration Port Illustration RLY1 Reserved Reserved RLY2 Reserved BMS communication dry contact Ltd. All rights reserved © Kehua Data Co.,...

  • Page 28: Installation

    Power Conversion System BCS-B-HM Series (75K-125K) 3 Installation User Manual 3 Installation This chapter mainly introduces the PCS's installation, including installation process, installation preparation, transportation, unpacking and checking, installation procedures, electrical connection. check the installation, etc. 3.1 Installation Process The installation process of the PCS is as shown in Figure3-1.

  • Page 29: Unpacking And Checking

    Power Conversion System BCS-B-HM Series (75K-125K) User Manual 3 Installation 3.2 Unpacking and Checking Determine the unpacking site in advance. Normally, the unpacking site should be as close to installation position as possible. The PCS has been completely tested and strictly inspected before leaving the factory, but damage may still occur during transporting, so a detailed inspection is required after arrival.

  • Page 30: Installation Clearance

    Power Conversion System BCS-B-HM Series (75K-125K) 3 Installation User Manual Figure3-2 Installation environment requirements  Choose the best installation location for the PCS, which plays a very important role in its safe operation, service life, performance guarantee, etc. Therefore, it is recommended to choose a place that can avoid direct sunlight, rain, and snow, as shown in Figure3-3.
  • Page 31 Power Conversion System BCS-B-HM Series (75K-125K) User Manual 3 Installation Figure3-4 Installation clearance (unit: mm) The installation height of the PCS should be easy to check the status of the indicator lights, connect wires, operate and maintain, etc. The recommended space between bottom of the PCS and ground is 450mm.

  • Page 32: Requirements For Installation Carrier

    Power Conversion System BCS-B-HM Series (75K-125K) 3 Installation User Manual  When the PCSs are installed back to back, a certain distance must be reserved between the two PCSs, as shown in Figure3-6. Figure3-6 Back-to-back installation space requirements (unit: mm) 3.3.3 Requirements for Installation Carrier...

  • Page 33: Transportation

    Power Conversion System BCS-B-HM Series (75K-125K) User Manual 3 Installation Figure3-8 Illustration of installation method Because the air flue of the PCS is bottom air inlet and top air outlet, in order to ensure the normal operation of the PCS, we suggest not installing the PCS horizontally.

  • Page 34: Ring Transporting

    Power Conversion System BCS-B-HM Series (75K-125K) 3 Installation User Manual It is recommended to carry the PCS by at least 3 people together and wear protective equipment such as smash-proof shoes and gloves.  While handling, move the PCS carefully to avoid impact or fall.

  • Page 35: Installation Tools

    Power Conversion System BCS-B-HM Series (75K-125K) User Manual 3 Installation While hoisting, keep balance and avoid collision with walls or other objects. In case of severe weather conditions, such as heavy rain, heavy fog, strong wind, etc., the hoisting operation should be stopped.

  • Page 36: Mechanical Installation

    Power Conversion System BCS-B-HM Series (75K-125K) 3 Installation User Manual Tools The installation tools need to be insulated to avoid electric shock. Multimeter range≥1500Vdc. Wrench specification: T30. 3.6 Mechanical Installation The PCS can be installed on the wall or metal bracket via equipped installation holder.
  • Page 37 Power Conversion System BCS-B-HM Series (75K-125K) User Manual 3 Installation Figure3-11 Assemble installation holder Step 2 Place the assembled installation holder onto the installation site, use a leveling instrument to adjust the angle, and mark the position of the hole on the bracket, as shown in Figure3-12.
  • Page 38 Power Conversion System BCS-B-HM Series (75K-125K) 3 Installation User Manual Figure3-13 Mounting hole size (unit: mm) Step 3 Use the electric drill to drill holes on the bracket according to the marked position. The drilling size is Φ12mm, as shown in Figure3-14.
  • Page 39 Power Conversion System BCS-B-HM Series (75K-125K) User Manual 3 Installation Step 5 Lift the PCS to the installation holder, make sure that the mounting ears of the PCS and the groove of the installation holder fit well, and then slowly hang the PCS to the installation holder, as shown in Figure3-16.

  • Page 40: Wall Mounting

    Power Conversion System BCS-B-HM Series (75K-125K) 3 Installation User Manual ----End 3.6.2 Wall Mounting Step 1 Use the four combination bolts M4*10 in accessories to fix the installation holder with the joint lever, as shown in Figure3-18. Figure3-18 Assemble installation holder...
  • Page 41 Power Conversion System BCS-B-HM Series (75K-125K) User Manual 3 Installation You can also directly mark the location of the holes according to the installation size of the installation holder (see Figure3-20). Figure3-20 Mounting hole size (unit: mm) Step 3 According to the marked position, use a hammer drill to drill holes on the wall. Drilling hole size is Φ14.5mm, depth range is 55~60mm.
  • Page 42 Power Conversion System BCS-B-HM Series (75K-125K) 3 Installation User Manual Step 4 Install expansion bolts. Install the four expansion bolts M10*80 into the installation holes, as shown in Figure3-22. Figure3-22 Expansion bolt installation diagram Step 5 Install the installation holder. Fix the installation holder to the expansion bolts, put on flat gaskets, spring gaskets and nuts, and then tighten the nuts clockwise with a wrench, as shown in Figure3-23.
  • Page 43 Power Conversion System BCS-B-HM Series (75K-125K) User Manual 3 Installation Figure3-24 Hang the PCS on the wall bracket Step 7 Use the screws M5*50 in the accessories to fix the PCS, as shown in Figure3-25. Figure3-25 Fix the PCS ----End Ltd.

  • Page 44: Electrical Connection

    Power Conversion System BCS-B-HM Series (75K-125K) 3 Installation User Manual 3.7 Electrical Connection After the PCS firmly installed, then it can be connected to the energy storage system. The electrical connection must meet the local laws and regulations and relative electrical standards.

  • Page 45: External Grounding Connection

    Power Conversion System BCS-B-HM Series (75K-125K) User Manual 3 Installation Table3-1 Wire and terminal requirements Name Type Recommended wire diameter（mm ） Outdoor two-core cable: 50~120 (max outer diameter <56mm) 1500V above DC input wire outdoor cables Outdoor single-core cable: 50~150 (max outer diameter <25mm)
  • Page 46 Power Conversion System BCS-B-HM Series (75K-125K) 3 Installation User Manual  Before connecting the AC side, energy storage battery and communication, please connect the external grounding wire first.  The grounding connection of the external grounding terminal cannot replace the connection of the internal grounding terminal.

  • Page 47: Ac Wiring

    Power Conversion System BCS-B-HM Series (75K-125K) User Manual 3 Installation  The grounding of the PCS and the lightning rod of the building that the PCS installed cannot be the same, the two need to be separated (as shown inFigure3-27), or, lightning stroke will damage the PCS.
  • Page 48 Power Conversion System BCS-B-HM Series (75K-125K) 3 Installation User Manual Wire requirements To prevent the connection of PCS and grid interrupting accidently caused by high impedance of AC wires, please select the suitable wire specification according to Table3-1. Before wiring, add marks for AC output cables to avoid wrong connection.
  • Page 49 Power Conversion System BCS-B-HM Series (75K-125K) User Manual 3 Installation The inner PCS may exist dangerous high voltage! Before connecting, ensure all wires all without electricity. Do not close the AC breaker before the electrical connection finished. Step 1 Set the AC breaker and DC switch to OFF.
  • Page 50 Power Conversion System BCS-B-HM Series (75K-125K) 3 Installation User Manual Figure3-31 Connect the AC wires The torque used to tighten the external forced cable fixing head of AC wiring is about 15~19N· m.  Avoid pressing the insulation layer of the cables. Improper connecting operation may cause the PCS fail to operate normally.

  • Page 51: Internal Grounding Connection

    Power Conversion System BCS-B-HM Series (75K-125K) User Manual 3 Installation Figure3-32 AC wires requirements (unit: mm) Please connect the AC wires according to the relevant requirements of different countries. Step 4 Tighten the externally forced cable fixing head of the AC terminal clockwise, seal the gap of wires and cable fixing head by fireproof mud.

  • Page 52: Dc Wiring

    Power Conversion System BCS-B-HM Series (75K-125K) 3 Installation User Manual Figure3-33 Connect internal ground The torque used to tighten the externally forced cable fixing head of the inner grounding wire is about 15~19N· m. 3.7.6 DC Wiring Step 1 Check whether the polarity of the energy storage batteries is correct.
  • Page 53 Power Conversion System BCS-B-HM Series (75K-125K) User Manual 3 Installation Figure3-34 Connect DC terminal The torque used to tighten the externally forced cable fixing head of DC wire is about 15~19N· m. When wiring, ensure that the insulation between positive cables and negative cables is well. Once the positive and negative short, it will cause the PCS permanent damage.

  • Page 54: Wifi Communication Connection (Optional)

    Power Conversion System BCS-B-HM Series (75K-125K) 3 Installation User Manual It is necessary to seal the gap of wires and cable fixing head by fireproof mud, unsealing or not well sealed will cause other object or moisture go into the PCS and even affect the service life or normal operation.

  • Page 55: Communication Connection

    Power Conversion System BCS-B-HM Series (75K-125K) User Manual 3 Installation 3.7.8 Communication Connection Step 1 Loosen the external forced cable fixing head of "COM.", and then lead the communication cable go through the external forced cable fixing head. Step 2 Crimp the communication wire to corresponding terminal, and then plug it into the corresponding port on the communication board.

  • Page 56: Startup And Shutdown

    Power Conversion System BCS-B-HM Series (75K-125K) 4 Startup and Shutdown User Manual 4 Startup and Shutdown This chapter mainly introduces how to start and shut down the PCS. 4.1 Check Before Startup Before first startup, please check the following items first.

  • Page 57: Start The Pcs

    Power Conversion System BCS-B-HM Series (75K-125K) User Manual 4 Startup and Shutdown 4.2 Start the PCS Damaged device or device fault may cause electric shock or fire!  Before operation, please check if the PCS is damaged or has other danger.

  • Page 58: Maintenance And Troubleshooting

    Power Conversion System BCS-B-HM Series (75K-125K) 5 Maintenance and Troubleshooting User Manual 5 Maintenance and Troubleshooting This chapter mainly describes the maintenance and troubleshooting. 5.1 Maintenance If any maintenance service is needed, please contact the after-sale service centre of Kehua Company, otherwise, Kehua Company will not undertake the responsibility for the loss caused by self-operation.

  • Page 59: Maintenance Guide

    Power Conversion System BCS-B-HM Series (75K-125K) User Manual 5 Maintenance and Troubleshooting Item Check method Maintenance period Wire inlet Check if the wire inlet holes are sealed up completely, Every year hole if not, seal them with fireproof mud. Check if there is abnormal noise on fan while running.
  • Page 60 Power Conversion System BCS-B-HM Series (75K-125K) 5 Maintenance and Troubleshooting User Manual Fan maintenance Before maintenance, shut down the PCS and disconnect all power input. Wait for 10min at least, after the inner capacitor discharge completely, the maintenance can be done.

  • Page 61: Troubleshooting

    Power Conversion System BCS-B-HM Series (75K-125K) User Manual 5 Maintenance and Troubleshooting Figure5-2 loosen the wiring of fan module Step 4 Pull out the fan module, clean the fan by brush or cleaner or replace the damaged fan. Figure5-3 Pull out fan module Step 5 Install the fan module in reversed order and lock the screws, restart the PCS.
  • Page 62 Power Conversion System BCS-B-HM Series (75K-125K) 5 Maintenance and Troubleshooting User Manual If some faults occur, the FAULT indicator will light on, you can check the fault details on the upper-computer. Under the circumstances, the PCS may stop running. The fault situation is as shown in Table5-2.
  • Page 63 Power Conversion System BCS-B-HM Series (75K-125K) User Manual 5 Maintenance and Troubleshooting Fault information Solution  If above are all normal, please contact local dealer or service centre.  Check if the heat sink of the PCS is blocked;  Check if the environment of the PCS is too high or too low;...
  • Page 64 Power Conversion System BCS-B-HM Series (75K-125K) 5 Maintenance and Troubleshooting User Manual Fault information Solution After the PCS restarted, if the fault still exists, please contact Softstart abnormal local dealer or service centre. After the PCS restarted, if the fault still exists, please contact Main contactor abnormal local dealer or service centre.
  • Page 65 Power Conversion System BCS-B-HM Series (75K-125K) User Manual 5 Maintenance and Troubleshooting Fault information Solution Check if the battery voltage is normal, if normal, the fault still DC bus over-voltage exist, please contact local dealer or service centre. After the PCS restarted, if the fault still exists, please contact DC softstart abnormal local dealer or service centre.
  • Page 66 Power Conversion System BCS-B-HM Series (75K-125K) 5 Maintenance and Troubleshooting User Manual Fault information Solution After the inner PCS discharged completely, check the BMS, if BMS discharge disabled the fault still exists, please contact the battery manufacturer. After the inner PCS discharged completely, check the BMS, if BMS alarm the fault still exists, please contact the battery manufacturer.

  • Page 67: Stop Running, Dismantle, Discard

    Power Conversion System BCS-B-HM Series (75K-125K) User Manual 6 Stop Running, Dismantle, Discard 6 Stop Running, Dismantle, Discard This chapter introduces the dispose way for stop running, dismantling, discarding the PCS. 6.1 Stop Running Normally, the PCS don't need to be shut down, but when maintenance, it is necessary to shut down the PCS.

  • Page 68: Dismantle The Pcs

    Power Conversion System BCS-B-HM Series (75K-125K) 6 Stop Running, Dismantle, Discard User Manual 6.2 Dismantle the PCS After the connection between the PCS and grid, battery group is completely disconnected and wait for 10min at least, ensure that the inner capacitor has discharged completely, and then the PCS can be dismantled.

  • Page 69: Package, Transportation, Storage

    Power Conversion System BCS-B-HM Series (75K-125K) User Manual 7 Package, Transportation, Storage 7 Package, Transportation, Storage This chapter mainly describes the package, transportation and storage. 7.1 Package The package of product is carton. When packing, pay attention to the placing direction requirements.

  • Page 70: A Technical Specifications

    Power Conversion System BCS-B-HM Series (75K-125K) A Technical Specifications User Manual Technical Specifications A.1 BCS75K-B-HM Items Specification Illustration DC side Max DC voltage (V) 1500 Voltage range with full load (V) 700-1300 Operation current range (A) 0-120 AC side (grid-tied)
  • Page 71 Power Conversion System BCS-B-HM Series (75K-125K) User Manual A Technical Specifications Items Specification Illustration manufacturer) ≥98.9 Max efficiency (%) ≤3% Grid-tied current harmonic Rated power Power factor range 1(ahead)-1(lag) ≤451 ≤0.5 time of rated current Current DC component (mA) AC side (off-grid)
  • Page 72 Power Conversion System BCS-B-HM Series (75K-125K) A Technical Specifications User Manual Items Specification Illustration for noise Display way LED indicators RS485/Ethernet/Bluetooth/ Communication port WIFI (optional) Communication protocol Modbus-RT, Modbus-TCP When the temperature exceeds Operation temperature range 50℃, it is necessary to decrease -30~60 (℃)
  • Page 73 Power Conversion System BCS-B-HM Series (75K-125K) User Manual A Technical Specifications A.2 BCS100K-B-HM Items Specification Illustration DC side Max DC voltage (V) 1500 Voltage range with full load (V) 600-1000 Operation current range (A) 0-186 AC side (grid-tied) Rated output power (kVA)
  • Page 74 Power Conversion System BCS-B-HM Series (75K-125K) A Technical Specifications User Manual Items Specification Illustration AC side (off-grid) Rated output power (kVA) Max continuous output power (kVA) Voltage deviation is ±3% Rated voltage (Vac) 400V Output voltage range (Vac) 340-440 Settable (error is 1%) Output voltage total harmonic ≤3%...
  • Page 75 Power Conversion System BCS-B-HM Series (75K-125K) User Manual A Technical Specifications Items Specification Illustration (℃) 45℃, it is necessary to decrease rated power to use. Storage temperature (℃) -40~70 Relative humidity of operation 0~100 Relative humidity of storage (%) 20~80...
  • Page 76 Power Conversion System BCS-B-HM Series (75K-125K) A Technical Specifications User Manual Items Specification Illustration Max continuous output power 137.5 (kVA) Rated grid voltage (Vac) 690 (3P3W) Output without neutral wire Settable (If it is necessary to set Grid voltage range (Vac) 586.5-759...
  • Page 77 Power Conversion System BCS-B-HM Series (75K-125K) User Manual A Technical Specifications Items Specification Illustration Rated output frequency (Hz) 50/60 Settable Common parameter The external terminals size is not Size (W*H*D) (mm) 700*900*265 included. Weight (kg) Protection grade (IP) IP65 The PCS with no transformer, the...
  • Page 78 Power Conversion System BCS-B-HM Series (75K-125K) A Technical Specifications User Manual Items Specification Illustration power to use. Ⅱ(DC)/Ⅲ(AC) Over-voltage category Ⅲ Pollution degree Standard CE, IEC 62477, IEC 61000 LVRT, HVRT, active Grid support power (reactive power) control  [1] When the PCS connect with electromotor in off-grid status, the power of electromotor cannot exceed 25kW.

  • Page 79: B Fasten Torque List

    Power Conversion System BCS-B-HM Series (75K-125K) User Manual B Fasten Torque List Fasten Torque List Specification Connection type Steel-steel (N· m) 0.7~1 1.8~2.4 4~4.8 18~23 34~40 60~70 119~140 The connection type in above table is that material of connecting part (bolt-screw hole).

  • Page 80: C Quality Assurance

    Power Conversion System BCS-B-HM Series (75K-125K) C Quality Assurance User Manual Quality Assurance If the PCS fault in guarantee period, Kehua Data Co., Ltd. (hereinafter referred to as Kehua Company) will maintenance it free or replace new product. Evidence In guarantee period, user needs to show the purchase invoice of the product, and the trademark on the product must be clearly visible, or, Kehua Company have right to refuse the quality assurance.
  • Page 81 Power Conversion System BCS-B-HM Series (75K-125K) User Manual C Quality Assurance If the fault is caused by above situation and user requires to maintain it, we can provide paid maintenance service after our service organization decided. To improve users' satisfaction continuously, our product and User Manual is upgrading. If the User Manual has difference with product, it may be caused by the version difference, please take the actual product as standard.

  • Page 82: D Acronyms And Abbreviations

    Power Conversion System BCS-B-HM Series (75K-125K) D Acronyms and Abbreviations User Manual Acronyms and Abbreviations Alternating Current Direct Current Liquid Crystal Display Light-emitting Diode MPPT Maximum Power Point Tracking Protective Earthing RS485 Recommend Standard485 Ltd. All rights reserved © Kehua Data Co.,...
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