Emerson Liebert NXC - User Manual

Liebert
®
NXC from 10 to 20kVA
User Manual
AC Power for
Business-Critical Continuity
™

Summary

Chapter 1 Product Introduction

1.1 Features

1.4 Operating Principle

1.5 UPS State and Operation Modes

Details the various operational states and modes the UPS can be in.

1.5.3 Battery Mode

1.5.6 Fault State

1.5.7 Maintenance Bypass Mode

Chapter 2 Battery

2.2 Safety Precautions for Batteries

Highlights critical safety measures when working with UPS batteries.

2.3.2 Installing the Batteries

Guides on the physical installation process for UPS batteries.

2.3.3 Connecting the Batteries

Provides step-by-step instructions for connecting battery cables.

2.4 Battery Maintenance

Chapter 3 Single UPS Installation and Commissioning

3.2 Installation Preparation

3.2.1 Location Requirements

3.2.2 Environmental Requirements

3.3 External Protection Devices

Explains the need for and types of external protection devices for the UPS.

3.4 Connecting Power Cables

Guides on connecting the main I/O and battery power cables to the UPS.

3.4.1 Connecting I;O Cables

Provides detailed instructions for connecting input/output cables to terminal blocks.

3.4.2 Connecting and Installing External Battery

Instructions for connecting and installing external battery systems.

3.5 Single UPS Commissioning

Procedures for setting up and verifying the operation of a single UPS unit.

3.5.1 Check Before Power-On

Essential checks to perform before powering on the UPS.

3.5.2 Single UPS Parameters Setting

Guides on configuring the operational parameters of the UPS.

3.5.3 Normal Mode Start-Up

Steps to start the UPS in normal operation mode.

3.5.4 Battery Mode Start-Up

Chapter 4 Parallel UPS Installation and Commissioning

4.1 Features of Parallel Systems

4.2 Requirements for Parallel Systems

Lists essential requirements for setting up and operating parallel UPS configurations.

4.3 Connecting Power Cables for Parallel Systems

Details the cabling requirements for connecting multiple UPS units in parallel.

4.3.1 Connecting I;O Cables

Instructions for connecting input/output cables for parallel UPS units.

4.3.2 Connecting Parallel Cables

Explains how to connect the parallel communication cables between UPS units.

4.3.3 Connecting External Battery Cables

Guides on connecting external battery cables for parallel UPS systems.

4.4 Commissioning Parallel System

Procedures for commissioning and verifying parallel UPS configurations.

4.4.1 Check Before Power-On

Pre-power-on checks specific to parallel UPS system setup.

4.4.2 Parallel System Parameters Setting

Configuration of parameters for all UPS units in a parallel system.

4.4.3 Power-On Commissioning for Parallel System

Steps to power on and commission each UPS unit in a parallel system.

4.5 Double Bus System Installation and Commissioning

4.5.3 Connecting Power Cables

4.5.4 Connecting LBS Cables

4.5.5 Setting Double Bus System Parameters

Configuration of parameters for double bus UPS system setup.

Chapter 5 Operation and Display Panel

5.1.1 LED Indicators

5.1.2 Audible Alarm (Buzzer)

5.1.3 Control Buttons

Details the function of each control button on the UPS panel.

5.1.4 LCD and Menu Buttons

Explains the LCD display and the menu navigation buttons.

5.2.2 Primary Screen

5.3 Detailed Description of Menu Items

Provides in-depth explanations for all menu items and parameters.

5.4 Prompt Window Messages

5.5 UPS Alarm Message List

A comprehensive list of UPS alarms and their corresponding descriptions.

Chapter 6 UPS Operation Instructions

6.1 UPS Start-Up Procedures

Step-by-step guide for starting up the UPS system.

6.2 Transfer Procedures Between Operation Modes

Instructions for switching the UPS between different operating modes.

6.2.1 Normal to Battery Mode Transfer

6.2.2 Inverter to Bypass Mode Transfer

6.2.3 Bypass to Inverter Mode Transfer

6.2.4 Inverter to Maintenance Bypass Transfer

6.2.5 Maintenance Bypass to Inverter Mode Transfer

6.3 UPS Complete Shutdown

6.4 Emergency Power Off (EPO)

Details the function and operation of the Emergency Power Off switch.

6.5 Auto Restart Function

6.6 UPS Reset Procedure

Steps to reset the UPS and restore it to normal operation after certain events.

Chapter 8 Maintenance

8.2 Battery Maintenance

Crucial procedures and precautions for maintaining the UPS battery.

8.4 Checking UPS State

8.5 Checking UPS Functions

Chapter 9 Product Specifications

9.4 Electrical Characteristics (Input Rectifier)

9.5 Electrical Characteristics (Intermediate DC Circuit)

9.6 Electrical Characteristics (Inverter Output)

9.7 Electrical Characteristics (Bypass Input)

9.8 Efficiency, Heat Losses and Air Exchange

Emerson Liebert NXC Specifications

General

Model	Liebert NXC
Topology	Double Conversion Online
Frequency	50/60 Hz
Battery Type	Valve Regulated Lead Acid (VRLA)
Communication Interface	SNMP, Modbus
Operating Temperature	0°C to 40°C
Humidity Range	0% to 95% (non-condensing)
Input Voltage	208/380/400/415V AC
Efficiency	Up to 96%