Huawei UPS5000-H-600 kVA-FTN Quick Manual
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Huawei UPS5000-H-600 kVA-FTN Quick Manual

Huawei UPS5000-H-600 kVA-FTN Quick Manual

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UPS5000-H-600 kVA-FTN
Quick Guide (Singapore, 100 kVA
Power Modules)
Issue
01
Date
2022-11-18
HUAWEI DIGITAL POWER TECHNOLOGIES CO., LTD.

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Summary of Contents for Huawei UPS5000-H-600 kVA-FTN

  • Page 1 UPS5000-H-600 kVA-FTN Quick Guide (Singapore, 100 kVA Power Modules) Issue Date 2022-11-18 HUAWEI DIGITAL POWER TECHNOLOGIES CO., LTD.
  • Page 2 Notice The purchased products, services and features are stipulated by the contract made between Huawei Digital Power Technologies Co., Ltd. and the customer. All or part of the products, services and features described in this document may not be within the purchase scope or the usage scope. Unless otherwise specified in the contract, all statements, information, and recommendations in this document are provided "AS IS"...

  • Page 3: About This Document

    Quick Guide (Singapore, 100 kVA Power Modules) About This Document About This Document Purpose This document describes the UPS5000-H-600 kVA-FTN in terms of its installation, cable connections, single UPS commissioning, and parallel system commissioning. Intended Audience This document is intended for: ●...
  • Page 4 UPS5000-H-600 kVA-FTN Quick Guide (Singapore, 100 kVA Power Modules) About This Document Change History Issue Date Description 2022-11-18 This issue is the first official release. Issue 01 (2022-11-18) Copyright © Huawei Digital Power Technologies Co., Ltd.

  • Page 5: Table Of Contents

    1.10.4 Installing a Backfeed Protection Card........................48 1.10.4.1 Cable Routing................................48 1.10.4.2 Installation and Cable Connection........................49 1.10.5 Installing Parallel Cables.............................. 51 1.11 Verifying the Installation..............................53 1.12 Sealing Cabinets..................................55 2 Single UPS Commissioning....................57 Issue 01 (2022-11-18) Copyright © Huawei Digital Power Technologies Co., Ltd.
  • Page 6 2.2 Shutting Down and Powering Off the UPS........................69 2.3 Performing EPO..................................71 3 Parallel System Commissioning..................73 3.1 Starting a Parallel System..............................73 3.2 Shutting Down and Powering Off a Parallel System....................78 Issue 01 (2022-11-18) Copyright © Huawei Digital Power Technologies Co., Ltd.

  • Page 7: Installation And Cable Connection

    UPS. Otherwise, the devices may fall off. Installation Clearance Requirements Reserve the following clearances around the cabinet to facilitate operations and ventilation: Issue 01 (2022-11-18) Copyright © Huawei Digital Power Technologies Co., Ltd.
  • Page 8 The distance between the bottom of the cable tray and the top of the cabinet must be at least 400 mm. Issue 01 (2022-11-18) Copyright © Huawei Digital Power Technologies Co., Ltd.

  • Page 9: Installation Preparations

    1.2 Installation Preparations 1.2.1 Tools The onsite operation personnel can select tools based on the site requirements. Personal protective equipment Safety helmet Goggles Protective shoes Reflective vest Issue 01 (2022-11-18) Copyright © Huawei Digital Power Technologies Co., Ltd.
  • Page 10 Manual pallet Lifting trolley truck Hardware installation tools Flat-head Phillips insulated Insulated torque Hex key insulated torque torque socket wrench screwdriver screwdriver Including (M2.5) (M4/M5/M6) extended sockets (M8/M10/M12/ M16) Issue 01 (2022-11-18) Copyright © Huawei Digital Power Technologies Co., Ltd.
  • Page 11 Utility knife Marker Rivet gun Insulated ladder Cable installation tools Cable cutter Wire stripper Diagonal pliers RJ45 crimping tool Electro-hydraulic Cord end terminal Heat gun Scissors pliers crimping tool Issue 01 (2022-11-18) Copyright © Huawei Digital Power Technologies Co., Ltd.
  • Page 12 Thermometer Clamp meter Soft measuring Steel measuring Square tape tape Level Laptop Level gauge Multimeter Network tester Phase sequence Dielectric strength Megohmmeter meter tester Machinery Small cutter Cable reel Issue 01 (2022-11-18) Copyright © Huawei Digital Power Technologies Co., Ltd.
  • Page 13 Cotton cloth Sandpaper Heat-shrink Insulation tape tubing Other tools Electrician's knife Hacksaw Powder marker Glue gun Brush Paint brush Vacuum cleaner Flashlight Insulation pad SPD extracting Hole saw tool Issue 01 (2022-11-18) Copyright © Huawei Digital Power Technologies Co., Ltd.

  • Page 14: Recommended Circuit Breakers

    Figure 1-3 Copper bar layout and specifications (unit: mm) (1) Battery wiring busbar (2) Mains input wiring busbar (3) Bypass input wiring busbar (4) Output wiring busbar (5) PE wiring busbar Issue 01 (2022-11-18) Copyright © Huawei Digital Power Technologies Co., Ltd.
  • Page 15 In a parallel system, the length and specifications of power cables on each UPS should be the same to achieve current equalization in bypass mode. The power cables include bypass input power cables and UPS output power cables. Issue 01 (2022-11-18) Copyright © Huawei Digital Power Technologies Co., Ltd.

  • Page 16: Power Cable Terminals

    Table 1-4 Cables for the dry contact card Name Specifications Quantity (PCS) arks Cable Double-insulated twisted cable. If the cable Several Provi length is within 25–50 m, the cross-sectional area must be 0.5–1.5 mm custo Issue 01 (2022-11-18) Copyright © Huawei Digital Power Technologies Co., Ltd.
  • Page 17 Quantity (PCS) Remarks Relationship EPO button Provided by the customer Cable EPO port on the dry Several Provided by the 0.3 mm contact card in the customer control module Issue 01 (2022-11-18) Copyright © Huawei Digital Power Technologies Co., Ltd.
  • Page 18 6 A. Fuse If a more reliable third-party power Provided by the customer supply is used, the customer needs to prepare 6 A fuses. Issue 01 (2022-11-18) Copyright © Huawei Digital Power Technologies Co., Ltd.
  • Page 19 400 V 240 V Three-phase three-wire 415 V 250 V Ambient T/H Sensor Table 1-9 Configuration table Name Appearance Quantity (PCS) Remarks Ambient T/H Delivered with the sensor product Issue 01 (2022-11-18) Copyright © Huawei Digital Power Technologies Co., Ltd.
  • Page 20 Delivered with block the product Cable Double-insulated twisted cable. If the cable Several Provided by the length is within 25–50 m, the cross-sectional customer area must be 0.5–1.5 mm Issue 01 (2022-11-18) Copyright © Huawei Digital Power Technologies Co., Ltd.

  • Page 21: Cabinet Transportation, Unpacking, And Checking

    If there is any discrepancy, keep a record and contact the supplier immediately. Step 4 Remove the bolts that secure the cabinet to the pallet and move the cabinet from the pallet. Issue 01 (2022-11-18) Copyright © Huawei Digital Power Technologies Co., Ltd.

  • Page 22: Installation Process

    UPS5000-H-600 kVA-FTN Quick Guide (Singapore, 100 kVA Power Modules) 1 Installation and Cable Connection Figure 1-4 Removing the pallet ----End 1.4 Installation Process Figure 1-5 Installation process Issue 01 (2022-11-18) Copyright © Huawei Digital Power Technologies Co., Ltd.

  • Page 23: Installing Pvc Components For Rear Copper Bar Protection

    Step 1 Remove the UPS rear door panels. Step 2 Install copper bar protection components. Figure 1-6 Installing copper bar protection components Step 3 Reinstall the UPS rear door panels. ----End 1.6 Installing Cabinets Issue 01 (2022-11-18) Copyright © Huawei Digital Power Technologies Co., Ltd.

  • Page 24: Top Cable Routing

    Knock the expansion bolt into the hole until the expansion tube completely fits into the hole. The expansion sleeve must be completely buried under the ground to facilitate subsequent installation. Issue 01 (2022-11-18) Copyright © Huawei Digital Power Technologies Co., Ltd.
  • Page 25 Remove the front panel from the bottom cabling cabinet. Remove certain front covers and the rear door panel from the inductor cabinet. Figure 1-9 Removing certain covers Combine the cabinets. Issue 01 (2022-11-18) Copyright © Huawei Digital Power Technologies Co., Ltd.
  • Page 26 1 Installation and Cable Connection Figure 1-10 Combining cabinets Step 6 Secure the cabinets to the floor. Figure 1-11 Securing the cabinets Step 7 Install anchor baffle plates around the cabinets. Issue 01 (2022-11-18) Copyright © Huawei Digital Power Technologies Co., Ltd.
  • Page 27 Figure 1-13 Hole positions on the channel steel (optional) (1) Hole positions on the channel steel Issue 01 (2022-11-18) Copyright © Huawei Digital Power Technologies Co., Ltd.

  • Page 28: Bottom Cable Routing

    Partially tighten the expansion bolt and vertically insert it into the hole. Knock the expansion bolt using a rubber mallet until the expansion sleeve is fully inserted into the hole. Issue 01 (2022-11-18) Copyright © Huawei Digital Power Technologies Co., Ltd.
  • Page 29 (1) M12x60 bolt (2) Spring washer (3) Flat washer (4) Expansion sleeve (5) Expansion nut (6) Concrete floor Step 3 Remove the UPS cabinet side panels. Figure 1-16 Removing side panels Issue 01 (2022-11-18) Copyright © Huawei Digital Power Technologies Co., Ltd.
  • Page 30 Remove the front panel from the bottom cabling cabinet. Remove certain front covers and the rear door panel from the inductor cabinet. Figure 1-17 Removing certain covers Combine the cabinets. Figure 1-18 Combining cabinets Issue 01 (2022-11-18) Copyright © Huawei Digital Power Technologies Co., Ltd.
  • Page 31 ● Ensure that the surface of channel steel is level. Step 1 Determine the cabinet installation position on the channel steel based on the mounting holes in the marking-off template or the hole dimensions diagram. Issue 01 (2022-11-18) Copyright © Huawei Digital Power Technologies Co., Ltd.

  • Page 32: Installing Inductor Cabinet Psus

    Step 1 Install inductor cabinet PSUs. Push the locking latch downwards. Pull out the handle. Insert the PSU into the slot and push it along the guide rails until it is in position. Issue 01 (2022-11-18) Copyright © Huawei Digital Power Technologies Co., Ltd.

  • Page 33: Installing Cables

    ● Prepare terminals onsite. The length of the copper wire should be the same as that of the part of the terminal that covers the conductor. Issue 01 (2022-11-18) Copyright © Huawei Digital Power Technologies Co., Ltd.

  • Page 34: Top Cable Routing

    Step 1 Remove the top cover (you do not need to reinstall it later). Figure 1-24 Removing the cover Step 2 Remove the epoxy separators between the top copper bars. Issue 01 (2022-11-18) Copyright © Huawei Digital Power Technologies Co., Ltd.
  • Page 35 ● Cables must be bound to the nearest beam or cable bridge according to the route shown in the following figure. Issue 01 (2022-11-18) Copyright © Huawei Digital Power Technologies Co., Ltd.
  • Page 36 When installing AC input power cables, if there are a great number of cables and the wiring holes in the mains input copper bar are insufficient, connect the cables to the corresponding holes in the bypass input copper bar. ● One power source Issue 01 (2022-11-18) Copyright © Huawei Digital Power Technologies Co., Ltd.
  • Page 37 (2) AC input power cables (3) Output power cables (U, (L1–L3) V, W) ● Two power sources Figure 1-29 Removing the copper bars of the same power source for mains and bypass inputs Issue 01 (2022-11-18) Copyright © Huawei Digital Power Technologies Co., Ltd.
  • Page 38 Step 7 Arrange cables, install the top beams (delivered with the product) on the top cover, and separate the mains input cables, bypass input cables, and output cables from each other. Issue 01 (2022-11-18) Copyright © Huawei Digital Power Technologies Co., Ltd.
  • Page 39 Remove the power distribution cover from the UPS cabinet. Figure 1-33 Removing the power distribution cover Install signal cables. NO TICE Do not bind signal cables and power cables together. Issue 01 (2022-11-18) Copyright © Huawei Digital Power Technologies Co., Ltd.
  • Page 40 ● Do not bind signal cables and power cables together. ● RS485 cables and FE cables must be shielded cables. ● The figure uses the cable connection between the UPS and the SmartLi as an example. Issue 01 (2022-11-18) Copyright © Huawei Digital Power Technologies Co., Ltd.

  • Page 41: Bottom Cable Routing

    Step 1 Remove the top cover (you do not need to reinstall it later). Figure 1-36 Removing the cover Step 2 Remove the bottom cabling cover from the bottom cabling cabinet. Step 3 Remove the epoxy separators between the top copper bars. Issue 01 (2022-11-18) Copyright © Huawei Digital Power Technologies Co., Ltd.
  • Page 42 Figure 1-37 Removing epoxy separators Step 4 Install ground cables. Figure 1-38 Installing ground cables (1) PE (2) Equipotential ground Step 5 Install power cables from the inductor cabinet to the UPS. Issue 01 (2022-11-18) Copyright © Huawei Digital Power Technologies Co., Ltd.
  • Page 43 When installing AC input power cables, if there are a great number of cables and the wiring holes in the mains input copper bar are insufficient, connect the cables to the corresponding holes in the bypass input copper bar. ● One power source Issue 01 (2022-11-18) Copyright © Huawei Digital Power Technologies Co., Ltd.
  • Page 44 1 Installation and Cable Connection Figure 1-40 Installing cables ● Two power sources Figure 1-41 Removing the copper bars of the same power source for mains and bypass inputs Issue 01 (2022-11-18) Copyright © Huawei Digital Power Technologies Co., Ltd.
  • Page 45 1 Installation and Cable Connection Figure 1-42 Installing cables Step 7 Reinstall the epoxy separators between the copper bars on the top of the UPS cabinet. Figure 1-43 Reinstalling the epoxy separators Issue 01 (2022-11-18) Copyright © Huawei Digital Power Technologies Co., Ltd.
  • Page 46 Step 9 Install signal cables from the inductor cabinet to the UPS. Remove the power distribution cover from the UPS cabinet. Figure 1-45 Removing the power distribution cover Install signal cables. Issue 01 (2022-11-18) Copyright © Huawei Digital Power Technologies Co., Ltd.
  • Page 47 ● Do not bind signal cables and power cables together. ● RS485 cables and FE cables must be shielded cables. ● The figure uses the cable connection between the UPS and the SmartLi as an example. Issue 01 (2022-11-18) Copyright © Huawei Digital Power Technologies Co., Ltd.

  • Page 48: Installing A Top Enclosure Frame

    Step 1 Remove the connecting kits from both sides of the cabinet top. Figure 1-48 Removing cabinet connecting kits Step 2 Install a top frame on the top of the UPS cabinet. Issue 01 (2022-11-18) Copyright © Huawei Digital Power Technologies Co., Ltd.
  • Page 49 Step 3 Install a top frame on the top of the inductor cabinet. Figure 1-50 Installing a top frame for the inductor cabinet Step 4 Install mounting plates at the front and rear of the top frame of the UPS cabinet. Issue 01 (2022-11-18) Copyright © Huawei Digital Power Technologies Co., Ltd.

  • Page 50: Installing Optional Components

    ● Triggering EPO will shut down the rectifier, inverter, charger, and static bypass, but will not disconnect the UPS mains input. To power off the UPS completely, turn off the upstream input switch when you trigger EPO. Issue 01 (2022-11-18) Copyright © Huawei Digital Power Technologies Co., Ltd.

  • Page 51: Installing An Ambient T/H Sensor

    If an ambient T/H sensor is configured, perform the following steps to install it. Procedure Step 1 Secure the fastener of the ambient T/H sensor to the wall or ceiling near the UPS. Issue 01 (2022-11-18) Copyright © Huawei Digital Power Technologies Co., Ltd.

  • Page 52: Installing A Dry Contact Extended Card

    (1) Cascaded with other T/H sensors ----End 1.10.3 Installing a Dry Contact Extended Card Step 1 Install a dry contact extended card. ● If a dry contact extended card is configured Issue 01 (2022-11-18) Copyright © Huawei Digital Power Technologies Co., Ltd.
  • Page 53 DOs transmit passive dry contact output signals. Users need to connect an external power supply to DOs. The maximum voltage and current of the external power supply are 30 V DC/1 A. Issue 01 (2022-11-18) Copyright © Huawei Digital Power Technologies Co., Ltd.

  • Page 54: Installing A Backfeed Protection Card

    If a backfeed protection card has been configured, perform the following steps to install it. 1.10.4.1 Cable Routing Figure 1-61 Cable routing if the UPS is used for power supply (1) Fuse terminal (2) Backfeed protection card Issue 01 (2022-11-18) Copyright © Huawei Digital Power Technologies Co., Ltd.

  • Page 55: Installation And Cable Connection

    Figure 1-63 Installing a backfeed protection card ● If both a backfeed protection card and a dry contact extended card are configured (An ECM expansion subrack is required, which is installed before delivery.) Issue 01 (2022-11-18) Copyright © Huawei Digital Power Technologies Co., Ltd.
  • Page 56 If a third-party reliable power supply is used, use the power signal with a voltage of 240 V AC or less and a current of less than 6 A. Issue 01 (2022-11-18) Copyright © Huawei Digital Power Technologies Co., Ltd.

  • Page 57: Installing Parallel Cables

    Step 2 Choose a parallel mode and connect power cables to the parallel system based on site requirements. The typical scenario of a 1+1 parallel system is used as an example. Issue 01 (2022-11-18) Copyright © Huawei Digital Power Technologies Co., Ltd.
  • Page 58 A dual-bus parallel system consisting of two parallel subsystems is used as an example. Figure 1-68 Conceptual diagram of a dual-bus parallel system Step 3 Pre-route the UPS parallel cables and place the parallel cable connectors near the PARALLEL ports. Issue 01 (2022-11-18) Copyright © Huawei Digital Power Technologies Co., Ltd.

  • Page 59: Verifying The Installation

    Labels on the busway and Both ends of a busway and cable are cables labeled. Labels are concise and easy to understand. Issue 01 (2022-11-18) Copyright © Huawei Digital Power Technologies Co., Ltd.
  • Page 60 Any damaged air filter should be replaced promptly. Removing an air filter will compromise the equipment performance, which may result in equipment damage. Issue 01 (2022-11-18) Copyright © Huawei Digital Power Technologies Co., Ltd.

  • Page 61: Sealing Cabinets

    (3) Sealing putty (with the transparent film facing upward) Step 3 Reinstall all covers. Step 4 Close the cabinet doors. NO TICE Do not remove the dust cover from the UPS before power-on. Issue 01 (2022-11-18) Copyright © Huawei Digital Power Technologies Co., Ltd.
  • Page 62 UPS5000-H-600 kVA-FTN Quick Guide (Singapore, 100 kVA Power Modules) 1 Installation and Cable Connection Figure 1-71 Dust cover (1) Dust cover ----End Issue 01 (2022-11-18) Copyright © Huawei Digital Power Technologies Co., Ltd.

  • Page 63: Single Ups Commissioning

    Insert the switch handle in place, and then rotate the switch handle. Pull out the switch handle and place it back on the tray of the front door. Ensure that the triangle arrow on the flange points to ON. Issue 01 (2022-11-18) Copyright © Huawei Digital Power Technologies Co., Ltd.

  • Page 64: Initial Startup

    Data Center Facility Deployment Guide . app. For details, see the Step 2 Set the language, time and date, network parameters, system parameters, and battery parameters on the Settings Wizard screen. Issue 01 (2022-11-18) Copyright © Huawei Digital Power Technologies Co., Ltd.
  • Page 65 ● Set Output frequency correctly. Otherwise, loads may be affected and the UPS may not work properly. ● Set all battery parameters correctly based on site requirements. Battery parameter settings are critical to battery maintenance, battery lifespan, and UPS discharge time. Issue 01 (2022-11-18) Copyright © Huawei Digital Power Technologies Co., Ltd.
  • Page 66 Step 3 After you set parameters on the Settings Wizard screen, the system displays the Bypass mode and No battery alarms, which do not need to be handled. Other alarms need to be handled. Issue 01 (2022-11-18) Copyright © Huawei Digital Power Technologies Co., Ltd.

  • Page 67: Starting The Inverter

    Step 3 In the displayed dialog box, tap Yes to start the inverter. ----End Starting the Inverter on the WebUI Step 1 Open a browser (Internet Explorer 11 as an example) and choose Tools > Internet Options. Issue 01 (2022-11-18) Copyright © Huawei Digital Power Technologies Co., Ltd.

  • Page 68: Powering On Loads

    A BCB box is installed. Procedure Step 1 Choose System Info > Settings > Dry Contact Set, set MUE05A connection to Enable, and set BCB connection [OL] and Battery breaker [STA] to Enable. Issue 01 (2022-11-18) Copyright © Huawei Digital Power Technologies Co., Ltd.

  • Page 69: Setting The T/H Sensor

    RS485_R DIP switch does not need to be set. If there are more than four, flip the RS485_R DIP switch of the ambient T/H sensor furthest from the UPS to ON. Issue 01 (2022-11-18) Copyright © Huawei Digital Power Technologies Co., Ltd.
  • Page 70 Step 2 Set UI parameters. NO TICE The address set on the software must be the same as the address set on the DIP switch. Otherwise, the communication fails. Issue 01 (2022-11-18) Copyright © Huawei Digital Power Technologies Co., Ltd.

  • Page 71: Setting Parameters For The Backfeed Protection Card

    Step 1 On the LCD, choose System Info > Settings > System Settings and set Bottom cable entry cabinet to Enable. ----End 2.1.6 Setting Working Modes 2.1.6.1 Setting the ECO Mode Issue 01 (2022-11-18) Copyright © Huawei Digital Power Technologies Co., Ltd.
  • Page 72 4 minutes after the setting is complete and the conditions are met. Step 3 (Optional) If you set ECO mode when the UPS is in bypass mode, manually start the UPS inverter. Issue 01 (2022-11-18) Copyright © Huawei Digital Power Technologies Co., Ltd.

  • Page 73: Setting The Hibernation Mode

    WebUI. Procedure Step 1 On the WebUI, choose Monitoring > UPS System > Running Parameter > System Settings, and set Paral sys hibernate to Enable. Issue 01 (2022-11-18) Copyright © Huawei Digital Power Technologies Co., Ltd.
  • Page 74 WebUI: Inverter hibernation is displayed on the home page. You can choose Monitoring > Module Summary > Module N > Running Information to view the running data of the module. Issue 01 (2022-11-18) Copyright © Huawei Digital Power Technologies Co., Ltd.

  • Page 75: Shutting Down And Powering Off The Ups

    Procedure Step 1 Shut down the inverter. ● Shutting down the inverter on the LCD Choose Common Functions > Inv. OFF. After confirmation, the inverter is shut down. Issue 01 (2022-11-18) Copyright © Huawei Digital Power Technologies Co., Ltd.
  • Page 76 Step 3 Switch off the battery string circuit breaker. If there are multiple battery strings, switch off the general circuit breaker between battery strings and the UPS and then switch off the circuit breaker for each battery string. Issue 01 (2022-11-18) Copyright © Huawei Digital Power Technologies Co., Ltd.

  • Page 77: Performing Epo

    Step 1 Press the external EPO switch that connects to the dry contact card or remove the 4-pin terminal on the EPO port of the dry contact card. The UPS enters the emergency shutdown state. EPO and No power supplied alarms are displayed. Issue 01 (2022-11-18) Copyright © Huawei Digital Power Technologies Co., Ltd.
  • Page 78 UPS5000-H-600 kVA-FTN Quick Guide (Singapore, 100 kVA Power Modules) 2 Single UPS Commissioning Figure 2-14 EPO port ----End Issue 01 (2022-11-18) Copyright © Huawei Digital Power Technologies Co., Ltd.

  • Page 79: Parallel System Commissioning

    0570-002 BPM unit abnormal. In this case, you need to power off the rack to clear the alarm. Issue 01 (2022-11-18) Copyright © Huawei Digital Power Technologies Co., Ltd.
  • Page 80 UPSs, or remove the general EPO switch. If a single UPS is not powered off after commissioning, verify on the monitoring screen that EPO has been activated successfully. Issue 01 (2022-11-18) Copyright © Huawei Digital Power Technologies Co., Ltd.
  • Page 81 Step 6 Set parallel parameters for each UPS. System Settings: On the LCD, choose System Info > Settings > System Settings. Alternatively, on the WebUI, choose Monitoring > UPS System > Running Parameter > System Settings. Issue 01 (2022-11-18) Copyright © Huawei Digital Power Technologies Co., Ltd.
  • Page 82 Perform the same operations on phases B and C. Complete the measurement between every two UPSs in the parallel system. If the phase sequence is correct and the voltage difference is less than 5 V, perform the subsequent Issue 01 (2022-11-18) Copyright © Huawei Digital Power Technologies Co., Ltd.
  • Page 83 UPS.) Use a multimeter to measure the voltage where the battery switch is located (if there are multiple battery strings, use a multimeter to measure the voltage Issue 01 (2022-11-18) Copyright © Huawei Digital Power Technologies Co., Ltd.

  • Page 84: Shutting Down And Powering Off A Parallel System

    ● Perform only step 1 if you only need to shut down the UPS inverters to switch the system to bypass mode without powering off loads. ● If you need to power off the entire UPS system, perform all the preceding steps. ----End Issue 01 (2022-11-18) Copyright © Huawei Digital Power Technologies Co., Ltd.

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