Liebert NX User Manual

Liebert
®
NX
™
UPS
User Manual–40-200kVA, 480V, 60Hz

Liebert NX Specifications

General

Frequency	50/60 Hz
Topology	Double Conversion/Online
Input Voltage	208, 220, 240 VAC
Output Voltage	208, 220, 240 VAC
Battery Type	VRLA
Operating Temperature	0 to 40°C (32 to 104°F)
Humidity Range	0 to 95% (non-condensing)

Summary

Important Safety Instructions

General Safety Warnings

Covers tipping, electric shock, and leakage current risks.

Battery Handling and Cabinet Safety

Specific safety measures for battery cabinets, handling, and electrical hazards.

2.0 Installation Procedures

Site Preparation and Inspections

UPS Location and Environmental Setup

Moving and Handling the UPS

3.0 Electrical Connections

Power Cabling and Connections

Guidelines for power cable sizing, routing, and connection procedures.

Control Cables and Dry Contacts

4.0 Battery Installation

Battery Safety and Handling Precautions

Critical safety measures for working with batteries and cabinets.

External Battery Cabinet Setup

Procedures for installing external battery cabinets and connections.

5.0 Options and Parallel Operation

Parallel System Configuration and Operation

6.0 UPS Specifications

Electrical Characteristics and Ratings

7.0 Liebert BDC™ Module

9.0 Operation

UPS Operating Modes and Bypass

10.0 Operator Control and Display Panel

Control Panel and Mimic Display Overview

Description of the front panel layout, mimic indicators, and LCD.

LCD Menus and System Information

11.0 Operating Instructions

UPS Startup and Mode Transitions

Step-by-step guide for starting the UPS and changing operating modes.

De-Energizing and Isolating the UPS

Procedures for safely powering down and isolating UPS units.

Multi-Module System Operations

APPENDIX A - UPS Status Messages

Event Messages and Troubleshooting Guidance

List of status messages and recommended actions for troubleshooting.