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NX 40 kVA
User manual
Liebert NX 40 kVA User Manual
Uninterruptible power supply
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Contents
Table of Contents
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Table of Contents
Uninterruptible Power Supply
Table of Contents
Chapter 1 Installing the UPS Module
Brief Introduction
Unpacking
Initial Check
Location Selection
UPS Room
External Battery Room (Additional Conditions for UPS with Integrated Batteries)
Storage
Positioning
System Cabinet
Moving the Cabinet
Clearance
Front Access
Final Positioning and Fixing
Cable Entry
External Protective Device
Rectifier and Bypass Input
External Battery Circuit Breaker
UPS Output
Power Cable
Maximum Steady State AC and DC Currents
Distance from Floor to Connection Point on the Equipment
Cable Connection
Control Cables and Communication
Input Dry Contact Port
BCB Port
Maintenance Switch and Output Switch State Port
Output Dry Contact Port (Backfeed Protection)
Remote EPO Input Port
RS485 Port, RS232 Port, and Intellislot Port
NX Intellislot Communication
Intellislot Web Card - SNMP/HTTP Network Interface Card (IS-WEBL)
Intellislot 485 Interface Card (IS-485L)
Intellislot Relay Card (IS-485L)
NX Communication Options
Chapter 2 Battery
Brief Introduction
Safety
Battery Power Cable (External Batteries Only)
Overview
Installing the Batteries
Connecting the Batteries
Battery Maintenance
Battery Recycling
Reference Current and Connection of External BCB
Chapter 3 Installing Parallel Systems
Overview
N Parallel System
Installing the Cabinet
External Protective Device
Power Cable
Auxiliary Control Wiring
Parallel Control Cables
Dual Bus System
Installing the Cabinet
External Protective Device
Power Cable
Control Cable
Chapter 4 Operation
Brief Introduction
Operating Theory
Static Transfer Switch
N Parallel System
Parallel System Features
Requirements for Paralleling UPS Modules
Operating Mode
Normal Mode
Battery Mode
Automatic Restart Mode
Bypass Mode
Maintenance Mode (Manual Bypass)
Parallel Redundancy Mode (System Expansion)
Battery Management (Set up During Commissioning)
Normal Function
Advanced Function
Battery Protection (Set up by Commissioning Engineer)
Chapter 5 Operator Control and Display Panel
Introduction
Indicators
Audible Alarm (Buzzer)
Control Keys
LCD and Menu Keys
LCD Screen Type
Start Screen
Primary Screen
Default Screen
Detailed Description of Menu Items
Prompt Window
Status/Alarm List
Chapter 6 Operating Instructions
Power Switches (Behind the Front Door)
UPS Startup Procedures
Procedure for Startup in Normal Mode
Procedure for Startup Without Input Supply
Procedures for Transfer between Operating Modes
Transfer from Normal Mode to Battery Mode
Transfer from Normal Mode to Bypass Mode
Transfer from Bypass Mode to Normal Mode
Transfer from Normal Mode to Maintenance Mode
Transfer from Maintenance Mode to Normal Mode
Procedure for Completely Powering down the UPS
Procedure for Completely Powering down the UPS While Maintaining the Power Supply to the Load
Isolation Procedure (for One UPS in a Parallel System)
Insertion Procedure (for One UPS in a Parallel System)
EPO Procedure
Automatic Restart
UPS Reset Procedure
Selecting the Display Language
Changing the Current Date and Time
Control Password
Chapter 7 Service
Service Procedures for Power Module and Bypass Module
Notes
Service Procedure for Power Modules
Service Procedure for Bypass Module
Air Filter Replacement Procedure
Chapter 8 Product Specifications
Conformity and Standards
Environmental Characteristics
Mechanical Characteristics
Electrical Characteristics (Input Rectifier)
Electrical Characteristics (Intermediate DC Circuit)
Electrical Characteristics (Inverter Output)
Electrical Characteristics (Bypass Input)
Efficiency, Heat Losses and Air Exchange
Chapter 9 Transformer Versions
Input Transformer Version
Output Transformer Version
Appendix 1 Option List
Appendix 2 Abbreviations
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Liebert NX 30/40/60kVA
UNINTERRUPTIBLE POWER SUPPLY
USER MANUAL
10H52192UM60 - Rev. 1
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