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Liebert NXC User Manual

10/15/20kva
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Liebert NXC 10/15/20kVA
UNINTERRUPTIBLE POWER SUPPLY
USER MANUAL
10H52188UM51 - rev. 1

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Summary of Contents for Liebert NXC

  • Page 1 Liebert NXC 10/15/20kVA UNINTERRUPTIBLE POWER SUPPLY USER MANUAL 10H52188UM51 - rev. 1...
  • Page 2 All rights, including rights created by patent grant or registration of utility model or design, are reserved. Delivery subject to availability. Right of technical modification reserved. Liebert NXC may differ from the one displayed on the front cover. User Manual 10H52188UM51 - Rev. 1 - 09/2011...

  • Page 3: Table Of Contents

    Liebert NXC Contents Contents   CHAPTER 1 PRODUCT INTRODUCTION ......................... 5   1.1 Features ..................................5   1.2 Model Configurations ..............................5   1.3 Appearance And Components ............................6   1.3.1 Appearance ....................................6   1.3.2 Components ....................................6  ...
  • Page 4 8.1 Option list ................................... 55   8.2 Communication Cables .............................. 55   8.3 Battery Cabinet ................................55   8.4 Liebert NXC Input Transformer Version ........................56   8.5 Liebert NXC Output Transformer Version ........................56 User Manual 10H52188UM51 - Rev. 1 - 09/2011...

  • Page 5: Chapter 1 Product Introduction

    Chapter 1 Product Introduction Liebert NXC UPS (UPS for short) is an intelligent online UPS system with sine wave output developed by Emerson Network Power. The UPS offers reliable and high quality AC power to the precision instrument. The UPS is applicable to supplying AC power to small scale computer centre, network, communication system, automatic control system and precision instrument.

  • Page 6: Appearance And Components

    Product Introduction Liebert NXC 1.3 Appearance And Components 1.3.1 Appearance The UPS device appearance is shown in Figure 1-1. Front view Rear view Figure 1-1 UPS appearance 1.3.2 Components UPS module front panel As shown in Figure 1-2, the UPS module front panel provides ventilation holes, operation and display panel, LED indicators, DIP switch and battery cold start button.

  • Page 7: Operating Principle

    Liebert NXC Product Introduction UPS module rear panel As shown in Figure 1-3, the UPS module rear panel provides parallel ports, Load Bus Synchronization ports, terminal block, Intellislot cards port, dry contact ports, USB port and ventilation holes. The SIC-SNMP card in the Intellislot cards port is optional, it is sold separately.

  • Page 8: Ups State And Operation Mode

    Product Introduction Liebert NXC 1.5 UPS State And Operation Mode The UPS state and operation mode include: Normal mode, Bypass mode, Battery mode, FRC (Frequency Converter) mode, ECO mode, Fault state and Maintenance Bypass mode. The operation schematic diagrams of Normal mode, Bypass mode, Battery mode, Maintenance Bypass mode ECO mode and FRC mode are shown in Figure 1-7.

  • Page 9: Normal Mode

    Liebert NXC Product Introduction 1.5.2 Normal Mode When the mains input is normal, the load is provided with voltage-stabilized and frequency- stabilized power by the inverter, and meanwhile the battery is charged. In Normal mode, the inverter indicators are on (green).

  • Page 10: Maintenance Bypass Mode

    Product Introduction Liebert NXC 1.5.8 Maintenance Bypass Mode If the maintenance and repair for UPS is needed, you can switch the load to the Maintenance Bypass through maintenance bypass MCB, and the power to the load is uninterrupted. The maintenance bypass Miniature Circuit Breaker is located on the rear panel of the UPS device, and the capacity meets the requirements of total load capacities.
  • Page 11 Liebert NXC Product Introduction Specifications Item LI6010… (10kVA) LI6015... (15kVA) LI6020… (20kVA) Conduction emission IEC/EN 62040-2 I ≤ 16A, IEC/EN 61000-3-3; 16A < I ≤ 75A, IEC/EN 61000-3-11 Immunity I ≤ 16A, IEC/EN 61000-3-2; 16A < I ≤ 75A, IEC/EN 61000-3-12...

  • Page 12: Chapter 2 Single Ups Installation And Commissioning

    Single UPS Installation and Commissioning Liebert NXC Chapter 2 Single UPS Installation And Commissioning This chapter introduces the installation, cable connection and commissioning of the single UPS. Each site has its peculiarity, so this chapter provides the guidance with general installation procedures and methods for the installation engineer, who should conduct the installation according to the actual conditions.

  • Page 13: Location

    Liebert NXC Single UPS Installation and Commissioning 2.2.2 Location To extend the UPS life, the place chosen must offer:  The UPS must be installed vertically, on a level and even surface  Convenient wiring  Adequate operator access area ...

  • Page 14: Installation Tools

    Single UPS Installation and Commissioning Liebert NXC UPS room (when Battery is integrated) A small amount of hydrogen and oxygen will be generated at the end of battery charging, therefore, you must ensure that the fresh air ventilation of battery installation environment meets the EN50272-2001 requirements.

  • Page 15: Battery Input (For External Battery)

    Liebert NXC Single UPS Installation and Commissioning Note 1. The same neutral line must be used for the rectifier and bypass power. 2. For IT power grid system, the quadrupole protective device must be installed at the UPS external I/O power distribution.
  • Page 16 Single UPS Installation and Commissioning Liebert NXC Table 2-2 Max. steady state AC and DC current Rated current (A) UPS rated Mains input current upon battery Gross output current at full load Battery discharging current power (kVA) charging with max. ability upon min.

  • Page 17: Connecting I/O Cables

    Liebert NXC Single UPS Installation and Commissioning 2.4.1 Connecting I/O Cables The power cables of the UPS should be connected through the I/O terminal block located on the UPS rear panel. Figure 2-3 gives the terminal layout of the I/O terminal block.
  • Page 18 Single UPS Installation and Commissioning Liebert NXC Copper shorting bars No. 3 UPS MODULE RECT CHARGER COMMUNICATION OP. AND DISP. PORTS PANEL INTERNAL BATTERY Figure 2-4 3-in 3-out, common source configuration cable connection  3-in 3-out, split-bypass configuration 1. Remove all the copper shorting bars 3 from the UPS I/O terminal block.
  • Page 19 Liebert NXC Single UPS Installation and Commissioning UPS MODULE RECT CHARGER COMMUNICATION OP. AND DISP. PORTS PANEL INTERNAL BATTERY Figure 2-5 3-in 3-out, split-bypass configuration cable connection  3-in 1-out, common source configuration Warning The factory default of this UPS is 3-in 3-out, common source configuration. Change the power distribution mode of the UPS to 3-in 1-out according to the steps described in the following section Changing power distribution mode.
  • Page 20 Single UPS Installation and Commissioning Liebert NXC Copper shorting bars UPS MODULE No. 6 No. 7 No. 8 Copper shorting bars No. 5 RECT No. 4 No. 10 No. 4 COMMUNICATION CHARGER OP. AND DISP. PORTS PANEL INTERNAL BATTERY Figure 2-7 3-in 1-out, common source configuration cable connection 4.
  • Page 21 Liebert NXC Single UPS Installation and Commissioning Copper shorting bars UPS MODULE No. 7 No. 8 Copper shorting bars No. 5 RECT No. 4 No. 10 No. 4 CHARGER COMMUNICATION OP. AND DISP. PORTS PANEL INTERNAL BATTERY Figure 2-8 3-in 1-out, split-bypass configuration cable connection 4.

  • Page 22: Connecting And Installing External Battery

    4. Power off the system completely, replace the EPO jumpers of the dry contact port 4, and remove the main input cable. 2.4.2 Connecting and Installing External Battery Notes For the installation and commissioning of an external Battery, refer to “Liebert NXC Battery User Manual”. User Manual 10H52188UM51 - Rev. 1 - 09/2011...

  • Page 23: Single Ups Commissioning

    Liebert NXC Single UPS Installation and Commissioning 2.5 Single UPS Commissioning 2.5.1 Check Before Power-On 1. Check and confirm that the power distribution mode of the UPS is correct, that the connections of the power cable and signal cable are correct and there is no short circuit.
  • Page 24 Single UPS Installation and Commissioning Liebert NXC Table 2-6 Parameter descriptions and default values Parameters Notes Default value Display contrast Adjust the LCD contrast Date format set M/D/Y, D/M/Y and Y/M/D formats can be selected Y/M/D Date & time Set the date and time...
  • Page 25 Liebert NXC Single UPS Installation and Commissioning Set “Single Group Batt Cap” according to the actual total battery capacity, for “Battery Cells Number”, 30, 32, 34, 36, 38 or 40 can be selected, set “Equalize Charge Allowed”, “Temp Compensation” and “Batt Temp Sensor Position” (battery temperature sensor is optional) according to the user requirement.

  • Page 26: Normal Mode Start-Up

    Single UPS Installation and Commissioning Liebert NXC Set “Output Voltage Level” and “LBS Function” according to the user requirement, set “Command password” to “12345”, the default value of “Protocol” is “Velocity”, select “Three” or “Single” in “3 Phase Output or 1 Phase Output”, as shown in Figure 2-14.

  • Page 27: Chapter 3 Parallel Ups Installation And Commissioning

    Liebert NXC Parallel UPS Installation and Commissioning Chapter 3 Parallel UPS Installation And Commissioning This chapter introduces the features, requirements, installation and commissioning of the parallel system. The UPS parallel system provides the user with N + X (2 ≤ N + X ≤ 4) parallel configuration, N stands for the basic parallel sets, X stands for the redundant sets.

  • Page 28: Connecitng I/O Cables

    Parallel UPS Installation and Commissioning Liebert NXC 3.3.1 Connecitng I/O Cables The UPS power cables are connected to the I/O terminal block of the UPS rear panel, the layout of the I/O terminal block is shown in Figure 2-3. Power distribution mode The I/O cable connections are divided into four types: 3-in 3-out, common source configuration (factory default), 3-in 3-out, split-bypass configuration, 3-in 1-out, common source configuration, 3-in 1-out, split-bypass configuration.
  • Page 29 Liebert NXC Parallel UPS Installation and Commissioning DB9 male port DB9 male port DB9 female port DB9 female port oN oN oA oB oC PE PE UPS 1 UPS 1 oN oN oA oB oC PE PE UPS 2 UPS 2...

  • Page 30: Connecting External Battery Cables

    Parallel UPS Installation and Commissioning Liebert NXC 3.3.3 Connecting external Battery Cables All the UPSs in parallel system can either share the battery strings, or use battery strings independently. Note Each UPS should be equipped with the independent battery MCB. Refer to Table 2-4 for selection of the battery MCB.
  • Page 31 Liebert NXC Parallel UPS Installation and Commissioning UPS 1 UPS 1 UPS 2 UPS 2 Bat+ Bat N Bat- PE Bat＋ Bat N Bat－ Bat+ Bat N Bat- PE Bat＋ Bat N Bat－ PE UPS 1 MCB UPS 1 MCB...

  • Page 32: Commissioning Parallel System

    Parallel UPS Installation and Commissioning Liebert NXC Unit 1# ITA 016 kVA Unit 1# ITA 016 kVA NXC 20kVA NXC 20kVA 14:30:36 14:30:36 Shared Battery Communication address Disabled Enabled Disabled System Configuration Parallel Single Group Batt Cap 0014 Single Parallel...

  • Page 33: Power-On Commissioning For Parallel System

    Liebert NXC Parallel UPS Installation and Commissioning Table 3-2 Parallel parameters setting Parameters Default value Parallel parameters setting Single Group Batt Cap 0014 Set the parameter according to the actual battery capicitity Battery Cells Number Set the parameter according to the actual battery number...

  • Page 34: Installation And Commissioning For Double Bus System With Common Neutral

    Parallel UPS Installation and Commissioning Liebert NXC 3) The rectifier runs in normal mode about 30 seconds, the rectifier start-up is finished. 4) Finish and check the parallel parameter settings. 5) Press the ON button for 2 seconds, the inverter indicator (green) are blinking, the inverter starts, and the inverter indicator turns green.

  • Page 35: Installing External Protective Device

    Liebert NXC Parallel UPS Installation and Commissioning Bypass input Bypass input Bypass Bypass Output Output Main input UPS 1 UPS 1 Main input Main Main Bypass Bypass Output Output UPS 2 UPS 2 Main Main LBS cable Connect to load...
  • Page 36 Parallel UPS Installation and Commissioning Liebert NXC DB9 male port DB9 male port DB9 female port DB9 female port oN oN oA oB oC PE PE UPS 1 UPS 1 DB9 male port DB9 female port DB9 male port DB9 female port...

  • Page 37: Setting Parameters Of Double Bus System

    Liebert NXC Parallel UPS Installation and Commissioning 3.5.5 Setting Parameters Of Double Bus System Take the double bus system formed by 1 + 1 parallel system for example, set ‘System Configuration’ to ‘Parallel’, ‘Parallel requisite units’ to ‘1’, ‘Parallel Redundant Units’ to ‘1’. For the master system, set ‘LBS Function’ to ‘MASTER’. For the slave system, set ‘LBS Function’...

  • Page 38: Chapter 4 Operation And Display Panel

    Operation and Display Panel Liebert NXC Chapter 4 Operation And Display Panel This chapter introduces the functions and use of the components on the UPS operation and display panel, and provides LCD display information, including the LCD screen types, detailed menu messages, prompt windows message and UPS alarm list.

  • Page 39: Control Buttons

    Liebert NXC Operation and Display Panel 4.1.3 Control Buttons The operation and display panel provides five control buttons, which functions are described in Table 4-3. Table 4-3 Description of control buttons Control button Silk print Description Used to disconnect the load power and close the rectifier, inverter, static bypass...

  • Page 40: Primary Screen

    Operation and Display Panel Liebert NXC 4.2.2 Primary Screen After the UPS system self-test, the primary screen shown in Figure 4-3 will appear. The primary screen is composed of four windows: system information window, data window, menu window and keypad window.

  • Page 41: Detailed Description Of Menu Items

    For details, see Table 4-5. Table 4-5 System information window Item Explanation Liebert NXC 020kVA UPS name, which stands for Liebert Liebert NXC 20kVA UPS ® 12: 30: 36 Current time (format: 24 Hours, h: min: s) Menu window and data window The menu window displays the menu name of the data window.
  • Page 42 Operation and Display Panel Liebert NXC Menu Item Explanation Display contrast Adjust the LCD contrast Date format set MM DD YYYY, DD MM YYYY and YYYY MM DD formats can be selected Date & time Set the date and time...

  • Page 43: Prompt Window

    Liebert NXC Operation and Display Panel 4.4 Prompt Window A prompt window is displayed during the operation of the system to alert you to certain conditions and/or to require your confirmation of a command. The prompts and meanings are given in Table 4-7.
  • Page 44 Operation and Display Panel Liebert NXC Alarm message Description Soft start fail Rectifier cannot start due to the DC bus low voltage This alarm is triggered by an inverter software program when the amplitude or frequency of bypass voltage is beyond the normal range. The amplitude threshold is fixed for ±10% rating.
  • Page 45 Liebert NXC Operation and Display Panel Alarm message Description The phase sequence direction of the bypass voltage is reversed. Normally, the phase of phase B lags 120 degrees behind phase A, and the phase of phase C lags 120 degrees behind phase B.

  • Page 46: Chapter 5 Ups Operation Instructions

    UPS Operation Instructions Liebert NXC Chapter 5 UPS Operation Instructions This chapter gives a detailed description of the UPS operation procedures. During the operation, the buzzer alarm may appear, at this point, you can press the ALARM CLEAR button to silence the audible alarm.

  • Page 47: Transfer From Maintenance Bypass Mode To Inverter Mode

    Liebert NXC UPS Operation Instructions Caution Before performing this procedure, you should check the LED information first, and make sure the bypass is normal and synchronizes with the inverter. Otherwise, it may result in the load power interruption for a while.

  • Page 48: Ups Complete Shutdown

    UPS Operation Instructions Liebert NXC 5.3 UPS Complete Shutdown If you need to shut down the UPS completely, transfer the UPS from Inverter mode to Maintenance Bypass mode according to the procedures in 5.2.4, so as to make no effect on the use of the load during the UPS power-off. Then if the power to the load is not needed, open the maintenance bypass LBS directly, as shown in Figure 5-1.

  • Page 49: Language Selection

    Liebert NXC UPS Operation Instructions Note 1. The rectifier restarts, and the bypass supplies power to the load. When the rectifier starts, the fault indicator blinks. When the rectifier runs in normal operation state (about 30 seconds later), the fault indicator will turn off.

  • Page 50: Chapter 6 Communication

    Communication Liebert NXC Chapter 6 Communication This chapter briefly introduces the UPS communication. The communication ports include: Intellislot cards port, dry contact port and USB port. 6.1 Installing Intellislot cards 6.1.1 Intellislot cards Port UPS provides a Intellislot cards port (see Figure 6-1), which is used to install the communication device options, including global connectivity cards and LIFE.net adapter.
  • Page 51 Liebert NXC Communication Table 6-1 Description of the dry contact ports Silk print Port name Pin NO. Pin name Meaning S_ALARM The signal level is 12V when the system alarms Output port of alarm The signal level is 12V when the system runs in battery...

  • Page 52: Connecting Usb Communication Cables

    Communication Liebert NXC Note 1. It is recommended to use 0.82mm ~ 0.33mm (signal cable of 18AWG ~ 33AWG) copper core cable. 2. If the switch you have configured is of electronic control tripping function, when the REPO signal takes action, you need to close the switch before restart the UPS.

  • Page 53: Chapter 7 Maintenance

    Liebert NXC Maintenance Chapter 7 Maintenance This chapter focuses on the UPS maintenance, including the fan maintenance, battery maintenance, UPS cleaning, UPS state check, UPS function check. 7.1 Fan Maintenance The UPS fans are expected to run for 20000 hours ~ 40000 hours continuously. The higher the ambient temperature, the shorter the fan life is.

  • Page 54: Cleaning Ups

    Maintenance Liebert NXC 7.3 Cleaning UPS Clean the UPS periodically, especially the ventilation holes, to ensure free airflow inside the UPS. If necessary, clean the UPS with a vacuum cleaner. Confirm that the ventilation holes are unobstructed. 7.4 Checking UPS State It is recommended to check the UPS operation status once every half year.

  • Page 55: Chapter 8 Options

    Option name Model Remark Communication UHRK2S671SL4 Liebert® NXC 10/15/20kVA UPS parallel communication cables cables 8.2 Communication Cables Communication cable is compulsory in parallel system. See Table 8-2 for cable description. Refer to 3.3.2 for the methods to connect the parallel cables.

  • Page 56: Liebert Nxc Input Transformer Version

    Options Liebert NXC 8.4 Liebert NXC Input Transformer Version This UPS includes an insulation transformer at the UPS input. This transformer is installed in place of the batteries and provides electrical insulation between the load and the input mains utility.

This manual is also suitable for:

Nxc li6010 seriesNxc li6015 seriesNxc li6020 series

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