Vertiv LIEBERT NXC 60KVA Installer/User Manual
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Vertiv LIEBERT NXC 60KVA Installer/User Manual

Ups, reliable & scalable power system designed for small and mid-size enterprises
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LIEBERT® NXC™ 60KVA UPS
Reliable & Scalable power system designed
for Small and Mid-size Enterprises
Installer/User Guide

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Summary of Contents for Vertiv LIEBERT NXC 60KVA

  • Page 1 LIEBERT® NXC™ 60KVA UPS Reliable & Scalable power system designed for Small and Mid-size Enterprises Installer/User Guide...

  • Page 2: User Manual

    November 15, 2018 Revision date 31013299 Vertiv Tech provides customers with technical support. Users may contact the nearest Vertiv local sales office or service center. 2015 Copyright © 2017 by Vertiv Tech Co., Ltd. All rights reserved. The contents in this document are subject to change without notice.

  • Page 4: Product Safety

     Near heat sources or strong electromagnetic interferences  Disclaimer Vertiv disclaims any and all responsibility or liability for the defects or malfunction caused by: Application range or operating environment outside the specifications  Unauthorized modification, improper installation or operation ...

  • Page 5: Safety Precaution

    * IEC/EN 62040-2:2006 Additional information regarding adherence to these directives is included in the appendices NSR and EMC to the Declaration of Conformity. If needed, the Declaration of Conformity can be requested to Vertiv. Warning System without C2 EMI filter: This UPS is a product for commercial and industrial application in the second environment.
  • Page 6 * IEC62040-1 General safety requirements for UPS * IEC62040-2-EMC * IEC62040-3 Performance requirements and test methods For details, refer to Chapter 11 Specifications. Continued compliance requires installation in accordance with these instructions and the use of manufacturer approved accessories only. Warning The selection of the upstream distribution protection equipment of the UPS shall be selected in accordance with the details in 3.1.4 Selection Of UPS I/O Switch and shall comply with the local electrical regulations.
  • Page 7 All physical battery maintenance and servicing procedures requires the use of a tool and should be carried out only by trained personnel. Take special care when working with the batteries associated with this UPS. When connected together, the battery terminal voltage will exceed 300Vdc and is potentially lethal. Battery manufacturers supply details of the necessary precautions to be observed in working on, or in the vicinity of, a large bank of battery cells.
  • Page 8 The Manual Describes The Following Equipment Product Model Liebert NXC 60kVA NX 0060kTJ1AFN02000...
  • Page 9 Update the notice to Table 3-2 and Table 3-3; add Sections 8.2.12, 8.2.13 and 8.2.14. V1.3 (June 10, 2017) Enrich contents in Section 2.7.2 and Section 6.2; update Appendix 3. V1.4 (November 15, 2017) Update related information about Vertiv. V1.5 (November 15, 2018) Update Figure 6-4 and Table 6-5...

  • Page 10: Table Of Contents

    Contents Chapter 1 Overview ............................1 1.1 Features ................................. 1 1.2 Design Concept ............................. 1 1.2.1 System Design ..............................1 1.2.2 Bypass ................................2 1.2.3 System Control Principle ..........................2 1.2.4 UPS Power Supply Switch Configuration ...................... 4 1.2.5 Battery Circuit Breaker (BCB) ......................... 4 1.3 Parallel System ..............................
  • Page 11 3.1.1 System Configuration .............................20 3.1.2 Maximum Steady State AC And DC Currents .....................20 3.1.3 Recommended CSA Of UPS Cable ........................21 3.1.4 Selection Of UPS I/O Switch .........................21 3.1.5 Distance Between The UPS Connection Point And The Floor ..............21 3.1.6 Notes ................................22 3.1.7 Power Cable Connecting Terminal .......................22 3.1.8 Protection Ground ............................22 3.1.9 External Protective Device ..........................22...
  • Page 12 5.2 UPS Startup Procedures ..........................48 5.2.1 Startup Procedures In Normal Mode ......................48 5.2.2 Startup Procedures In ECO Mode ........................49 5.2.3 Startup Procedures In Battery Mode (Battery Cold Start) ...............49 5.3 Procedures For Transfer Between Operation Modes ...................50 5.3.1 Transfer From Normal Mode To Battery Mode ...................50 5.3.2 Transfer From Normal Mode To Bypass Mode ...................50 5.3.3 Transfer From Bypass Mode To Normal Mode ...................50 5.3.4 Transfer From Normal Mode To Maintenance Mode .................50...
  • Page 13 Chapter 7 Parallel System And LBS System ....................69 7.1 General .................................69 7.2 System Installation Procedures ........................69 7.2.1 Preliminary Checks ............................69 7.2.2 Cabinet Installation ............................69 7.2.3 Power Cable ..............................70 7.2.4 Parallel Cable ..............................70 7.2.5 Remote EPO ..............................71 7.3 Operation Procedures For Parallel System ....................72 7.3.1 Startup Procedures In Normal Mode ......................72 7.3.2 Maintenance Bypass Procedures .........................73 7.3.3 Procedures For Isolating One UPS Module From Parallel System ............74...
  • Page 14 9.2 Modbus Protocol Communication ........................98 9.3 Dry Contact Communication ........................98 9.3.1 Communication Through IS-Relay Card ......................98 9.3.2 Communication Through Dry Contact Port ....................99 Chapter 10 Service And Maintenance ......................100 10.1 Safety ............................... 100 10.2 Key Components And Service Life Of UPS ....................100 10.2.1 Life Parameters And The Proposed Replacement Time Of Key Components ........

  • Page 16: Chapter 1 Overview

    Chapter 1 Overview This chapter briefly introduces the features, design concept, parallel system, operation mode, battery management and battery protection of the Liebert NXC 60kVA UPS (UPS for short). 1.1 Features The UPS is connected between a critical load (e.g. a computer) and mains power to provide high quality power for the loads.

  • Page 17: Bypass

    UPS operator control and display panel will display corresponding alarm messages. If the system uses split bypass configuration and the bypass is normal, the system will transfer to bypass. Liebert NXC 60kVA UPS User Manual...
  • Page 18 In case of inverter failure, inverter switch failure, output fuse blowout and bypass STS failure, the load will automatically transfer to the bypass, and the output power supply will not be interrupted. In this situation, please contact the local customer service center of Vertiv Tech Co., Ltd for technical support. (Parallel System) In the event of a fault in a UPS module, it will automatically exit from the parallel system.

  • Page 19: Ups Power Supply Switch Configuration

    2. Parallel cables are connected in a ring, providing both system reliability and redundancy. LBS cables are connected between any two UPS modules of each bus. The intelligent parallel logic provides the user with Liebert NXC 60kVA UPS User Manual...

  • Page 20: Parallel System Requirements

    AC power to the loads. At the same time, the charger will charge the battery. Rectifier Inverter Automatic inverter switch Mains input UPS output Output switch Rectifier input switch Battery Battery charger Figure 1-3 Schematic diagram of normal mode Liebert NXC 60kVA UPS User Manual...
  • Page 21 This maintenance bypass switch is fitted in all UPS modules and rated for full load of one module. Liebert NXC 60kVA UPS User Manual...
  • Page 22 UPS module ensures automatic load sharing. The parallel system can be composed of up to four UPS modules. For the operation principle diagram of the parallel redundancy mode, see Figure 7-1. Liebert NXC 60kVA UPS User Manual...

  • Page 23: Battery Management

    1.5 Battery Management The following battery management functions are set by the service engineer through the Vertiv setting software. 1.5.1 Normal Function 1.

  • Page 24: Advanced Function

    9. Maximum boost charge protection time To protect against the battery overcharge damage caused by long time boost charge, a protect time setting is essential. The limit of time setting shall be configured by service engineer through the Vertiv setting software.

  • Page 25: Battery Temperature Compensation

    EOD voltage is adjustable from 1.6V/cell to 1.85V/cell (VRLA). BCB alarm The BCB alarm occurs when the external BCB opens, if you select the Vertiv BCB (optional). The external battery connects to the UPS through the BCB. The BCB is manually closed and tripped by the UPS control circuit.

  • Page 26: Chapter 2 Mechanical Installation

    If an electric forklift is used, insert the tines of the forklift below the bottom pallet (as shown in Figure 2-1) to prevent the equipment from falling over. Liebert NXC 60kVA UPS User Manual...

  • Page 27: Tools

    Drill Wire cutting plier Claw hammer Diagonal cutting plier Insulating shoes Antistatic gloves Electrician knife Cable tie Insulating tape Insulating gloves Crimping plier Heat shrinkable tube Insulated torque wrench Torque screwdriver Multimeter Clip-on ammeter Liebert NXC 60kVA UPS User Manual...

  • Page 28: Unpacking

    2. Remove the fixing bolts of the bottom pallet (see Figure 2-4), and reserve the fixing bolts. Then use the forklift (following the inserting direction shown in Figure 2-4) to move the cabinet near the installation place. Liebert NXC 60kVA UPS User Manual...

  • Page 29: Initial Inspection

    2. Unpack the UPS and battery under the guidance of authorized service engineer. Visually inspect whether the inside and outside of the UPS and battery have any transportation damage. If there is any damage, report to the carrier immediately. Liebert NXC 60kVA UPS User Manual...

  • Page 30: Environmental Requirement

    (see Table 11-2). The battery needs to be stored in a dry and cool place with good ventilation. The most suitable storage temperature ranges from 20°C to 25°C. Warning Liebert NXC 60kVA UPS User Manual...

  • Page 31: Mechanical Requirement

    2. Rotate the feet down to touch the floor. 3. Plug the foot fixing pieces to the feet. 4. Align the foot fixing pieces with the installation holes dug according to dimensions shown in Figure 2-7. Liebert NXC 60kVA UPS User Manual...
  • Page 32 5. Rotate the nuts from top to bottom till the nuts firmly press the foot fixing pieces, and then use the fixing bolts M10 to fix the UPS on the floor. Foot fixing piece Foot Installation hole Figure 2-6 Schematic diagram for UPS positioning and fixing Liebert NXC 60kVA UPS User Manual...

  • Page 33: Installation Drawings

    Chapter 2 Mechanical Installation 2.8 Installation Drawings Figure 2-7 describes the key mechanical characteristics of the UPS. Liebert NXC 60kVA UPS User Manual...
  • Page 34 1528 Right side view Front view Left side view 36 signal cable inlet Ф Cable access area 11 foot installation hole Ф Bottom view Figure 2-7 Top/front/side/bottom view of the UPS (unit: mm) Liebert NXC 60kVA UPS User Manual...

  • Page 35: Chapter 3 Electrical Installation

    Table 3-1 Max. steady state AC and DC currents Rated current (A) Bus stud bolt/nut specification UPS power Max. Output/bypass Battery discharge Input/battery/ Recommended (kVA) input current at full load current (+, -, N) at output/ torque (N.m) Liebert NXC 60kVA UPS User Manual...

  • Page 36: Recommended Csa Of Ups Cable

    1250A or above. 2. The BCB option provided by Vertiv has the protection function of overload and short circuit, and it can also automatically trip the battery switch to protect the battery and UPS when the battery at EOD point, faults like bus voltage abnormal, battery over-temperature or over-voltage.

  • Page 37: Notes

    The qualified installation engineer should have the knowledge of the local wiring regulations on the equipment to be installed. Rectifier and bypass input power supply 1. Input overcurrent and short circuit protection Liebert NXC 60kVA UPS User Manual...

  • Page 38: Power Cable Connection Steps

    (refer to Table 11-6 and Table 11-7). 3.1.10 Power Cable Connection Steps For cable access mode of the UPS, refer to 2.7.3 Cable Access Mode. Liebert NXC 60kVA UPS User Manual...
  • Page 39 4. bA, bB, bC, N:bypass input terminals 4. bA, bB, bC, N: bypass input terminals 5. oA, oB, oC, oN: output terminals 5. oA, oB, oC, oN: output terminals Figure 3-2 Power cable connection terminals Liebert NXC 60kVA UPS User Manual...
  • Page 40 Step 4: Respectively connect cables to the cabinet rectifier input termimals, Respectively connect cables to the cabinet rectifier input terminals, bypass input terminals and output terminals. bypass input termimals and output termimals. Figure 3-3 Power cables wiring route (top cable access) Liebert NXC 60kVA UPS User Manual...
  • Page 41 PE input terminal in the cabinet. Warning 1. The earth cables and neutral line must be connected in accordance with local and national codes of practice. 2. Failure to observe this could result in electric shock or fire risk. Liebert NXC 60kVA UPS User Manual...
  • Page 42 (mA-mB-mC) in the cabinet, and connect the bypass input cables to the bypass input terminals (bA-bB-bC) in the cabinet. Connect the rectifier input neutral line and bypass neutral line to the neutral terminal N in the cabinet. Ensure correct phase rotation. Liebert NXC 60kVA UPS User Manual...
  • Page 43 Note: When connecting the cables between battery terminals and BCB, the connection should begin from the BCB terminal. Now the connection is finished. Then replace the protective covers. Note After connection, take appropriate measures to seal the cable entry holes. Liebert NXC 60kVA UPS User Manual...

  • Page 44: Wiring Of Signal Cable

    3.2.2 Input Dry Contact Port The input dry contact ports J1 and J5 are shown in Figure 3-8 and described in Table 3-5. The input dry contact voltage is 12Vdc, and the current is 20mA. Liebert NXC 60kVA UPS User Manual...

  • Page 45: Bcb Port

    BCB undervoltage release. Normally 12V, tripping at BCB backfeeding signal input (normally open). Normally open auxiliary contact signal of BCB: Auxiliary contact closed upon circuit breaker closed, while auxiliary contact open upon circuit breaker open Liebert NXC 60kVA UPS User Manual...

  • Page 46: Backfeed Protection Dry Contact Port

    Meanings EPO activated when opened to 4.2. Pins 4.1 EPO_NC and 4.2 have been shorted in factory Remote EPO input +12V EPO activated when opened to 4.1 +12V EPO activated when shorted to 4.4 Liebert NXC 60kVA UPS User Manual...

  • Page 47: Rs232 Communication Port

    See Figure 3-7 for its position. See Table 3-9 for definition of its pins, and see Figure 3-12 for the cable connection diagram of RS485 communication port. Table 3-9 Pins definition of RS485 communication port 1, 2 3, 6 4, 5 Definition Liebert NXC 60kVA UPS User Manual...

  • Page 48: Intellislot Port

    Respectively route the power cables and signal cables. The shielding coat of signal cable must be reliably earthed. Two connection modes are available: top cable access, bottom cable access. See Figure 3-13 and Figure 3-14. Liebert NXC 60kVA UPS User Manual...
  • Page 49 Step 1 Top cover Step 2 Note: Step 1: Remove the top cover, lead cables into the cabinet Step 2: Connect cables to corresponding terminals. Figure 3-13 Signal cables wiring route (top cable access) Liebert NXC 60kVA UPS User Manual...
  • Page 50 Figure 3-14 Signal cables wiring route (bottom cable access) Liebert NXC 60kVA UPS User Manual...

  • Page 51: Chapter 4 Operator Control And Display Panel

    The two indicators show the current working state of the UPS, see Table 4-2 for details. Table 4-2 Definition of indicators Indicator Status Description Solid green Load powered by the inverter Inverter Flashing green Inverter turning on, starting up, synchronizing or in stand-by state (ECO mode) indicator Inverter off Liebert NXC 60kVA UPS User Manual...

  • Page 52: Audible Alarm (Buzzer)

    Down Providing 320 × 240 dot matrix graphic display, the user-friendly and menu-driven LCD allows you to easily browse through the input, output, load and battery parameters of the UPS, get current UPS status Liebert NXC 60kVA UPS User Manual...

  • Page 53: Lcd Screen Type

    After the UPS starts and finishes self-test, the primary screen appears, as shown in Figure 4-3. The primary screen is divided into four windows: system information window, data window, menu window and keypad window. Liebert NXC 60kVA UPS User Manual...

  • Page 54: Default Screen

    F5) restores the default screen. NXC 60kVA 16:21:17 APM 600kVA 16:21:17 Liebert Figure 4-4 Default screen 4.3 Detailed Description Of Menu Items The description that follows refers to the LCD primary screen shown in Figure 4-3. Liebert NXC 60kVA UPS User Manual...
  • Page 55 The menu window provides the menus of the data window. The data window displays the items of the menu selected in the menu window. UPS parameters can be browsed and functions can be set through the menu window and data window. Details are provided in Table 4-7. Liebert NXC 60kVA UPS User Manual...
  • Page 56 Battery is float charging charging Battery is not Battery is not connected connected Event (active alarm) Display the active alarms Records (alarm history) Display the alarm history Language (language option) Provide 17 optional LCD languages Liebert NXC 60kVA UPS User Manual...
  • Page 57 Display UPS accumulated run time Run Time Byp. Run time Display UPS accumulated run time on bypass UPS version Provide UPS inverter, rectifier and monitoring software versions Version UPS model Provide UPS model information, for example, 208V-60Hz Liebert NXC 60kVA UPS User Manual...

  • Page 58: Prompt Window

    The inverter failed to turn on when the ON key is pressed. This may be the result of an Turn on fail invalid operation (maintenance bypass switch closed) or DC bus or rectifier not ready Soft start fail Owing to low DC bus voltage, the rectifier will report this alarm Liebert NXC 60kVA UPS User Manual...
  • Page 59 Unit overload timeout When the time has expired, the load automatically transfers to the bypass Load impact transfer A transfer to bypass occurred due to a large step load. The UPS can recover automatically. Liebert NXC 60kVA UPS User Manual...
  • Page 60 Battery end of Inverter turned off due to battery EOD discharge Battery overtemp. The battery temperature is over limit Battery low Before the EOD, battery low pre-warning will occur. After this pre-warning, the battery will Liebert NXC 60kVA UPS User Manual...
  • Page 61 1. For UPS installed with the optional battery monitor, refer to the user manual of the battery monitor for the alarm messages related to battery cell and charge current. 2. If the alarm is caused through setting the software value by Vertiv authorized engineer, and you wish to change the setting values, please contact the Vertiv local customer service center.

  • Page 62: Chapter 5 Ups Operation Introduction

    Note: If the UPS system is composed of more than 2 paralleled UPS modules, do not use the internal maintenance bypass switch. Q5: Output switch, which connects UPS output to the load. Q6: Neutral line switch (lockable). Liebert NXC 60kVA UPS User Manual...

  • Page 63: Ups Startup Procedures

    (red) is on. At the same time, the bypass static switch is closed. About 30 seconds later, the alarm indicator (red) is flashing, and then the rectifier startup is finished. Liebert NXC 60kVA UPS User Manual...

  • Page 64: Startup Procedures In Eco Mode

    5.2.2 Startup Procedures In ECO Mode 1. If ECO mode is required, contact Vertiv service engineer to set it through the setting software. If you wish to set it by yourself, you can enable it through the sub-menu under 'Settings' on the LCD screen.

  • Page 65: Procedures For Transfer Between Operation Modes

    1. Press the OFF key at least two seconds. At this point, the inverter indicator (green) turns off, accompanied by an audible alarm. The load transfers to the static bypass, and the inverter shuts down. Liebert NXC 60kVA UPS User Manual...

  • Page 66: Transfer From Maintenance Mode To Normal Mode

    Therefore, the UPS maintenance is suitable for qualified personnel only. 5.3.5 Transfer From Maintenance Mode To Normal Mode The following procedures will transfer the maintenance bypass supply mode of the UPS to the normal mode. Liebert NXC 60kVA UPS User Manual...

  • Page 67: Battery Test Procedures

    Use the right or left key to navigate to the Command menu. 2. Select the desired test (the Battery maintenance test or Battery capacity test option). Use the up and down keys (F3, F4) to highlight the desired test. Press the Enter key (F5). Liebert NXC 60kVA UPS User Manual...

  • Page 68: Ups Self-Test Procedures

    2. If the UPS has internal battery, use the special tool to open the battery compartment door, then pull the three terminals 'BAT+', 'BAT-' and 'BAT N' (see Figure 5-3 for details). If the UPS has external battery, disconnect the corresponding switch of the external battery. Liebert NXC 60kVA UPS User Manual...

  • Page 69: Procedures For Completely Powering Down Ups While Maintaining Power To Load

    When the rectifier enters normal operation (about 30 seconds later), the rectifier indicator turns solid green. 2. The rectifier will start automatically when the overtemperature fault disappears five minutes after the disappearance of overtemperature signal. Liebert NXC 60kVA UPS User Manual...

  • Page 70: Automatic Restart

    FAULT CLEAR key first for two seconds and then ON key for two seconds. Note During the automatic restart process, manual startup is disabled. Automatic restart must be set by Vertiv's authorized service engineer through Vertiv setting software.

  • Page 71: Control Password

    6. Similar to step 4, press the F3 and F4 to input new password again, and press the F5 (enter) key to confirm, then press the F2 (ESC) key to return to the 'OutPut' menu. Liebert NXC 60kVA UPS User Manual...

  • Page 72: Chapter 6 Battery

    Too large or too small torque may cause poor connection of the Tighten the terminal bolt of the terminal. Under certain conditions, the terminal may have arcing or battery with specified torque heat accumulation, which finally will cause fire Liebert NXC 60kVA UPS User Manual...
  • Page 73 (e.g., wrench) are covered with insulating material. Otherwise, battery burning, human death/injury or explosion may be caused. h) Do not disassemble, modify or demolish the battery. Otherwise, battery short circuit, liquid leakage or even human injury may be caused. Liebert NXC 60kVA UPS User Manual...

  • Page 74: Ups Battery

    To avoid the battery over-charge or under-charge, please set the battery management parameters according to the equalizing/float charge voltage and temperature compensation factor specified in the manuals provided by the battery manufacturer. Please charge the battery immediately after discharge. Liebert NXC 60kVA UPS User Manual...

  • Page 75: Precautions For Installation Design

    Uneven temperature among the battery strings will cause uneven voltage distribution and thus result in problem. Therefore, it is very important to maintain balanced temperature in the battery string, and the temperature difference between batteries of different layers shall be kept Liebert NXC 60kVA UPS User Manual...

  • Page 76: Number Of Batteries

    2.2Vdc/Cell ~ 2.3Vdc/Cell, 2.27V/cell recommended 6.6 Battery Protection The UPS inside has a fuse switch to protect the internal battery. The Vertiv BCB (optional) is recommended to protect the external battery. The external battery is connected to the UPS through the BCB. The BCB can be manually closed and has the electronic tripping device controlled by the UPS control circuit.

  • Page 77: Battery Connection

    6. When the battery cable is connected, it is prohibited to pull the battery cable or the cable terminal. 7. Do not cross the battery cables during the connection, and do not tie the battery cables together. 8. See Figure 6-1 for battery connection. Liebert NXC 60kVA UPS User Manual...

  • Page 78: Design Of Battery Room

    The workbench (or pedal) must be skid-proof and insulated, and at least 1m wide.  Wiring All the wiring distances shall be minimized.  The BCB is generally installed in the wall-mounted box near the battery. Liebert NXC 60kVA UPS User Manual...

  • Page 79: Bcb Box (Optional)

    The BCB box contains a BCB and a BCB control board. Vertiv provides the BCB box and BCB signal cables (length: 30m) for use when the battery does not install in the battery cabinet. In this situation, The BCB box is fitted as close as possible to the battery and connected to the UPS.
  • Page 80 Cabling hole for confirming the cable size and opening hole Wall-mounted installation hole Grounding bar Insulating plate Base plate Visible cover The BCB box generally uses bottom cabling mode, but you can rotate its bottom plate to use top cabling mode. Liebert NXC 60kVA UPS User Manual...

  • Page 81: Bcb Reference Current And Connection

    6.10 BCB Reference Current And Connection Table 6-6 provides recommended BCB rated current and battery maximum discharge current at full load. Refer to Table 3B in IEC60950-1, and select the appropriate cable CSA according to local electrical regulations. Liebert NXC 60kVA UPS User Manual...

  • Page 82: Battery Maintenance

    2. Ensure that all safety devices are in place and operate normally, and that the battery management parameters are set properly. 3. Measure and record the air temperature inside the battery room. 4. Check to ensure that the battery terminals have no damage or heat generating trace, and the battery enclosure Liebert NXC 60kVA UPS User Manual...

  • Page 83: Disposal Of Used Battery

    Random discard or any other improper disposal of the used lead acid storage battery may cause severe environment pollution and the relevant person will be investigated of corresponding legal responsibilities. Liebert NXC 60kVA UPS User Manual...

  • Page 84: Chapter 7 Parallel System And Lbs System

    Warning To guarantee the normal operation of parallel system, the CAN resistance matching operation must be executed by the Vertiv authorized service engineers. Failure to do so could cause system fault. 7.2.1 Preliminary Checks Be sure that the options of the parallel cables are correct, and that the modules are of the same rating, model, and with the same software and hardware release.

  • Page 85: Power Cable

    PARA1 port to the PARA2 port of another module. Follow this method to connect other parallel cables. The ring connection ensures the reliability of the control of the parallel system. Be sure to verify the reliable cable connection before starting up the system! Liebert NXC 60kVA UPS User Manual...

  • Page 86: Remote Epo

    J4 4.2 J3 3.2 Communication Communication board board UPS 1 UPS1 Figure 7-3 EPO circuit diagram Note: In Figure 7-3, the upper one is Normally Open type, and the lower one is Normally Closed type. Liebert NXC 60kVA UPS User Manual...

  • Page 87: Operation Procedures For Parallel System

    About 30 seconds later, the alarm indicator (red) is flashing, then the rectifier startup is finished. After all the rectifiers startup of the UPSs is finished, the alarm indicators (red) are flashing. Liebert NXC 60kVA UPS User Manual...

  • Page 88: Maintenance Bypass Procedures

    8. Disconnect the rectifier input switch Q1 and bypass input switch Q2 of each UPS in turn. At the moment, all the internal power supply is closed and the LCD does not display any more. Liebert NXC 60kVA UPS User Manual...

  • Page 89: Procedures For Isolating One Ups Module From Parallel System

    7.3.3 Procedures For Isolating One UPS Module From Parallel System Important These procedures shall only be carried out by service personnel of Vertiv or under their guidance. Warning Before operation, confirm that the system capacity has redundancy to avoid system shutdown due to overload.

  • Page 90: Procedures For Completely Powering Down Ups

    The system uses the LBS cables to keep the output of the two independent (or parallel) UPS systems in synchronization. One system is designated as the master, the other is designated as the slave. The operation modes of the parallel system comprise master and/or slave operation in normal or bypass mode. Liebert NXC 60kVA UPS User Manual...
  • Page 91 Figure 7-5 LBS system (parallel system) Note In a dual-bus system, the two UPS systems must have the same power rating, voltage and frequency, and the load must not exceed the power rating of a UPS module system. Liebert NXC 60kVA UPS User Manual...

  • Page 92: External Protective Device

    PAR A 2 LBS 2 PAR A 2 LBS 2 PAR A 2 Parallel cable Parallel cable Parallel cable Parallel cable LBS cable LBS cable Figure 7-7 Connection of typical LBS system (parallel system) Liebert NXC 60kVA UPS User Manual...

  • Page 93: Chapter 8 Options

    Install the bypass load sharing inductors for the parallel system comprised of two or more UPS modules, to ensure the bypass output load sharing for the parallel system. The bypass load sharing inductor is used to compensate the impedance differentia between SCR and cable. See Table 8-2 for the specifications. Liebert NXC 60kVA UPS User Manual...
  • Page 94 2. Open the cabinet front door and battery comparment, and remove the side panels of the UPS cabinet, then reserve the removed screws. 3. Install the three bypass load sharing inductors, see Figure 8-2. Liebert NXC 60kVA UPS User Manual...
  • Page 95 Refer to Figure 8-3, respectively connect one end of W01 ~ W03 to inductor A, inductor B, and inductor C. Use the M6 × 16 sems screws, M6 flat washers and nuts to fasten the terminals. The torque value is 4.8N.m. Figure 8-3 Connection of inductor (1) Liebert NXC 60kVA UPS User Manual...

  • Page 96: Internal Battery Kit

    3. Keep good records. Inform the service engineer for on-site maintenance in time. 8.2.2 Internal Battery Kit Vertiv provides two kind of internal battery kits for the user when UPS internal battery or corresponding kits is required. Kit: 40-block internal battery kit (factory installation), or select the battery cable, battery tray, screws, cable tie, protective cap and battery fuse (site installation).
  • Page 97 Open the cabinet front door, remove the baffle of switches, side panel and rear panel, and then install the cables (W19, W20 and W21) shown in Figure 8-5. Note to fix W20 and original W14 together. Liebert NXC 60kVA UPS User Manual...
  • Page 98 Figure 8-5 Installing internal battery fuse and battery cables (front view) 3. Open the cabinet front door, remove the screws to open the battery compartment door (see Figure 8-6), and reserve the removed screws. Battery compartment door Figure 8-6 Opening battery compartment door Liebert NXC 60kVA UPS User Manual...
  • Page 99 No.1 ~ No.8 battery trays correspond to 1 ~ 4 layers (from bottom to top) of the battery compartment, otherwise the battery voltage may be abnormal. Warning The battery tray shall be installed from the bottom layer upwards, to avoid falling over caused by high center of gravity. Liebert NXC 60kVA UPS User Manual...
  • Page 100 Figure 8-8 Connection between battery trays and batteries 6. Use torque value in Figure 8-9 to fix both sides of the battery tray, then pull up the limiting baffle plate. Liebert NXC 60kVA UPS User Manual...
  • Page 101 8. Close the battery compartment door and then reinstall the switch cover plate, and then use hex sems screw M5*12 (4 pcs) to fasten the column reinforcement on lower left/right corner of the cabinet, as shown in Figure 8-10. Liebert NXC 60kVA UPS User Manual...

  • Page 102: Battery Temperature Compensation Kit

    Preparation 1. Prepare the installation tools, including a cross head screwdriver. 2. Check that all installation materials are present and complete, including a battery temperature sensor, a UF-RS485 card. Procedures Warning Liebert NXC 60kVA UPS User Manual...
  • Page 103 4. Remove the right side panel of the cabinet, place the battery temperature sensor onto the back area of the battery tray 1, and then insert the UF-RS485 card into the Intellislot port 1. Refer to Figure 8-13 for installation and connection of the battery temperature sensor. Liebert NXC 60kVA UPS User Manual...

  • Page 104: Seismic Anchor Kit

    Width (mm) Length (mm) Warning 1. Only Vertiv authorized engineers shall carry out the installation. 2. Carry out the installation strictly following the instructions. Failure to observe this could cause personnel injury or damage to the UPS and seismic anchor kits.
  • Page 105 Figure 8-17 Fixing seismic anchor 4 on the ground and fixing the cabinet 5. Use four M10 × 30 sems screws to fix seismic anchor 5 onto seismic anchor 3, as shown in Figure 8-18. Liebert NXC 60kVA UPS User Manual...

  • Page 106: Is-Unity-Dp Card

    Figure 8-20 IS-UNITY-DP card For further description of the IS-UNITY-DP card, refer to Liebert IntelliSlot Unity Card User Manual–Web, SNMP, Modbus, BACnet, YDN23 in accessory. 8.2.6 IS-WEBL Card Figure 8-21 shows the appearance of the IS-WEBL card. Liebert NXC 60kVA UPS User Manual...

  • Page 107: Is-Relay Card

    Figure 8-21 IS-WEBL card The IS-WEBL card is a network management card. It can make the UPS made by Vertiv Tech Co., Ltd real network equipment. It can also be connected to the IRM series sensor to provide environment monitoring function.
  • Page 108 The installation method of the IS-Relay card is the same as that of the IS-WEBL card described in 8.2.6 IS-WEBL card. Refer to 3.2.11 Signal Cable Connection Steps for the cabling and routing of the signal cables. Liebert NXC 60kVA UPS User Manual...

  • Page 109: Is-485L Card

    LBS cables in a ring configuration: from the LBS1 port of one UPS module to LBS2 port of another UPS module, and from the LBS2 port of one UPS module to LBS1 port of another UPS module, as shown in Figure 7-6 and Figure 7-7. Liebert NXC 60kVA UPS User Manual...

  • Page 110: C2 Electromagnetic Shielding Assembly

    This UPS includes an isolation transformer (see Figure 8-25 for its position) at the UPS output. This transformer is installed in the cabinet and provides electrical isolation between the UPS output and the load. Liebert NXC 60kVA UPS User Manual...
  • Page 111 Battery Figure 8-26 System working principle (output transformer included) Warning When switching on the maintenance bypass switch, the output transformer is still live. During the transformer maintenance, you must shut down the UPS completely. Liebert NXC 60kVA UPS User Manual...

  • Page 112: Lightning Proof Box

    The lightning proof box (see Figure 8-28 for its position) is installed at the UPS input. The system with lightning proof box can pass the lightning proof test of 3kA. Lightning proof box Figure 8-28 Position of lightning proof box Liebert NXC 60kVA UPS User Manual...

  • Page 113: Chapter 9 Communication

    Tech Co., Ltd. This card supports SNMP protocol. The IS-WEBL card is a network management card. It can make the UPS developed by Vertiv Tech Co., Ltd. real network equipment. It can also be connected to the IRM series sensor to provide environment monitoring function.

  • Page 114: Communication Through Dry Contact Port

    These functions are realized through the following interfaces on the external interface board (EIB): Input dry contact port  Output dry contact port  EPO input port  For the functions and detailed information of these ports, refer to 3.2 Wiring Of Signal Cable. Liebert NXC 60kVA UPS User Manual...

  • Page 115: Chapter 10 Service And Maintenance

    UPS. Under normal environmental conditions, the air filters should be cleaned or replaced once every two months and need more frequent cleaning and replacement in dusty or other harsh environments. Frequent inspection or replacement should also be made in new buildings. Liebert NXC 60kVA UPS User Manual...

  • Page 116: Replacement Of Fuse

    UPS and the options need common maintenance: 1. Keep good history record. Keeping good history record facilitates failure treatment. 2. Keep clean, so as to prevent UPS from the invasion of dust and moisture. Liebert NXC 60kVA UPS User Manual...
  • Page 117 UPS is working in order to rapidly position which ambient conditions are unusual; the setting of UPS operation control panel should be known as well. For information of the UPS battery maintenance, refer to 6.11 Battery Maintenance. Liebert NXC 60kVA UPS User Manual...

  • Page 118: Chapter 11 Specifications

    Dimensions (W × D × H) 600 × 850 × 1600 Dimensions with packaging 876 × 966 × 1810 (W × D × H) Net weight Neight weight with battery Neight weight with transformer Liebert NXC 60kVA UPS User Manual...

  • Page 119: Electrical Characteristics (Input Rectifier)

    2.35 (selectable from 2.3 to 2.4) Boost voltage V/cell (VRLA) Constant current and constant voltage charge mode Float-boost current trigger 0.050C (selectable from 0.001 to Boost control 0.070) Boost-float current trigger 0.010C (selectable from 0.001 to Liebert NXC 60kVA UPS User Manual...

  • Page 120: Electrical Characteristics (Inverter Output)

    380/400/415, 3-phase 4-wire, sharing neutral with the rectifier input and Rated AC voltage providing neutral reference to the output, (3-in 3-out) 91 (3-in 3-out) 380V Rated 400V 87 (3-in 3-out) current 415V 84 (3-in 3-out) Liebert NXC 60kVA UPS User Manual...
  • Page 121 Rated frequency ±0.5, ±1, ±2, ±3 (optional) window 1. Factory set to 380V. 400V or 415V can be selected by service engineer at site. 2. Factory set to 50Hz. 60Hz can be selected by service engineer at site. Liebert NXC 60kVA UPS User Manual...

  • Page 122: Efficiency And Loss

    Loss Normal mode (no load) 0.43 Normal mode (full load) 2.43 With output transformer 4.61 (full load) Above condition applicable to voltage input and output range set at 400V and battery remains fully charged. Liebert NXC 60kVA UPS User Manual...

  • Page 123: Appendix 1 Disposal Of Old Appliances

    Follow local municipal waste ordinances for proper disposal provisions to reduce the environmental impact of waste electrical and electronic equipment (WEEE). For information regarding the scrapping of this equipment please contact your closest Vertiv Representative. Liebert NXC 60kVA UPS User Manual...

  • Page 124: Appendix 2 Glossary

    Personal computer Protective earth RCCB Residual current circuit breaker Residual current detector Silicon-controlled rectifier SNMP Simple network monitoring protocol Static transfer switch SVPWM Space vector pulse width modulation Uninterruptible power system VRLA Valve-regulated lead-acid Liebert NXC 60kVA UPS User Manual...

  • Page 125: Appendix 3 Hazardous Substances And Content

    ×: Means the content of the hazardous sustances in at least one of the average quality materilals of the parts is outsides the limits specified in GB/T 26572 About battery: Generally follow the environmental protection use period of the battery, otherwise five years. Applicable scope: NXC 60kVA UPS Liebert NXC 60kVA UPS User Manual...
  • Page 126 © 2019 Vertiv Group Corp. All rights reserved. Vertiv™ and the Vertiv logo are trademarks or registered marks of Vertiv Group Corp. All other names and logos referred to are trade names, trademarks or registered trademarks of their respective owners.

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