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Emerson Liebert NX 10-30kVA User Manual

Emerson Liebert NX 10-30kVA
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AC Power
For Business-Critical Continuity
Liebert NX
UPS
Installation Manual–10-30kVA, 208V, 60Hz

Table of Contents

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Emerson Liebert NX 10-30kVA Specifications

General IconGeneral
Power Rating/Capacity/Output Power Capacity10-30 kVA
Frequency50/60 Hz
TopologyDouble Conversion Online
EfficiencyUp to 96%
Battery TypeValve Regulated Lead Acid (VRLA)
Phase3-phase
Communication Ports/InterfaceRS-232, USB
Operating Temperature0 to 40 °C
Operating Humidity0 to 95% (non-condensing)

Summary

IMPORTANT SAFETY INSTRUCTIONS

GLOSSARY OF SYMBOLS

Defines symbols used in the manual for electrical safety and equipment identification.

1.0 INSTALLATION

External Inspections

Procedures for inspecting UPS equipment and shipping containers for damage upon arrival.

Internal Inspections

Visual examination of UPS and battery equipment for transit damage and checking nameplate details.

Storing for Delayed Installation

Guidelines for storing equipment indoors if immediate installation is not possible, considering humidity and temperature.

Preliminary Checks

Initial checks before proceeding with installation, including identification of the UPS unit.

UPS Location

Considerations for selecting an appropriate location for the UPS, including environmental and airflow requirements.

Positioning the UPS

Criteria for choosing a UPS location, focusing on accessibility, ventilation, and environmental conditions.

Environmental Considerations

Detailed environmental requirements for UPS operation, including temperature, humidity, and ventilation clearances.

Special Considerations for 1+N Systems

Specific placement advice for 1+N parallel systems to ensure optimal performance and grounding.

Considerations in Moving the NX

Guidance on safely moving the UPS and optional battery cabinets, including weight and tipping hazards.

Mechanical Considerations

Physical construction details of the NX UPS, including frame, panels, doors, and casters.

Clearances

Required space around the UPS for installation, servicing, and air circulation.

Floor Installation

Instructions for bolting the equipment to the floor or mounting it on a pedestal for raised floors.

Cable Entry

Methods and considerations for routing cables into the NX UPS from the top or bottom.

Optional Cabinets

Guidelines for positioning and connecting optional Maintenance Bypass and Battery cabinets relative to the UPS.

2.0 ELECTRICAL CONNECTIONS

Power Cabling

Guidance on selecting and installing power cables for the UPS system, considering voltage, current, and environment.

Cable Rating

Factors for sizing UPS input, bypass, output, and battery cables based on current and voltage requirements.

UPS Input Configuration

Explains split bypass (dual-input) vs. single-input configurations and how to wire them.

Cabling Guidelines

General recommendations for cable sizing, neutral cable, grounding, and conduit usage.

Cable Connections

Detailed instructions for connecting rectifier input, bypass, output, and external battery busbars.

Safety Ground

Importance of proper grounding for safety, EMI reduction, and bonding all cabinets.

Protective Devices

Requirements for installing circuit breakers in input AC supply and battery cabinets for safety.

Cabling Procedure

Step-by-step procedure for connecting power cables, including common and dual input configurations.

2.2 Control Cables

Monitor Board Features

Overview of the monitor board's capabilities for managing the UPS, battery system, and communication.

2.3 Dry Contacts

Input Dry Contacts

Details the available input dry contacts at the X3 slot for alarms and external signals.

Maintenance Bypass Cabinet Interface

Lists the terminal functions for the Maintenance Bypass Cabinet interface.

BCB Box Interface

Describes the terminal connections for the Battery Circuit Breaker (BCB) box interface.

Output Dry Contacts

Explains the output dry contact relays at the X1 slot for status signaling.

EPO Input-Optional

Instructions for connecting the Emergency Power Off (EPO) input for both older and newer firmware versions.

3.0 BATTERY INSTALLATION

Introduction

Recommends matching battery types and fitting isolating devices for parallel battery sets.

Safety

Emphasizes extreme care when working with batteries due to high voltage and potential hazards.

UPS Batteries

Information on internal batteries being shipped charged, requiring a recharge before use.

External Battery Cabinet Installation

Discusses cabinet sizes, handling, inspection, storage, and general installation precautions for external cabinets.

Matching Battery Cabinets

Discusses cabinet sizes, handling, inspection, storage, and general installation precautions for external cabinets.

Connecting the Batteries

Procedures for routing battery power and control cables to the UPS cabinet, considering floor or adjacent installations.

Installation Considerations

Details on cabinet positioning, bolting, service clearance, cable routing, software setup, and tray support.

Connecting the Battery Cabinet to the UPS

Step-by-step guide to connecting the battery cabinet to the UPS, including ground, battery cables, and control cables.

Non-Standard Batteries

Requirements for using non-matching battery cabinets, including disconnect switches and ventilation.

4.0 MAINTENANCE BYPASS CABINET

Bypass Switch

Describes the function of the bypass switch for transferring loads between UPS and bypass source.

Normal (UPS) Mode

Explains the operation when the bypass switch is in the normal position, with the UPS powering the load.

Bypass Mode

Describes bypass mode, providing an alternate power path but without UPS protection for the load.

Maintenance Mode

Details maintenance mode, offering an alternate power path with no UPS protection and no power to the UPS.

Locating the Cabinet

Guidance on positioning the Maintenance Bypass Cabinet relative to the UPS or as a standalone unit.

Cable Installation

Procedures for installing cables in the Maintenance Bypass Cabinet, including wiring preparation.

Wiring Preparation

Precautions and steps before wiring, including removing cover plates and ensuring proper tools.

Power Cable Installation

Referencing tables for selecting cables and notes on earth leakage currents.

Input/Output Wiring

Step-by-step guide for connecting input and output wiring, including conduit and access plates.

Bolting Cabinets Together

Instructions for aligning and bolting the Maintenance Bypass Cabinet to the UPS cabinet.

5.0 OPTIONS

Load Bus Synchronization

Explains the Load Bus Synchronizer (LBS) for synchronizing UPS outputs in parallel systems.

Performance Requirements

Conditions under which the DBS (LBS) operates, including master/slave states.

DBS Cable and Settings

Details on the LBS cable connection and configuration for NX-to-NX dual bus setups.

Configuring Parallel System Operation

Guide to setting up parallel UPS modules for increased reliability and serviceability.

General

Introduction to the NX's parallel operation technology and the benefits of 1+N systems.

Features of Parallel System

Highlights features of parallel systems, including hardware, firmware, and paralleling logic.

Operating Principles

Explains redundancy paralleling and how the system maintains operation during module failures or load increases.

Operation Modes Summary

Summarizes the different operation modes for parallel systems (Normal, Battery, Bypass, Maintenance Bypass).

Installing Parallel System

Procedures for installing parallel UPS systems, covering conditions, cabinet installation, and checks.

Conditions for Parallel System

Prerequisites for parallel systems, including matching ratings, firmware, and bypass sources.

Cabinet Installation

Guidelines for placing UPS modules and paralleling cabinets in a parallel system.

Preliminary Checks

Verifying that each UPS module meets the conditions for parallel operation.

Protective Devices

Guidance on protective devices for each UPS and the overall parallel system.

Power Cables

Details on wiring power cables for parallel systems, including routing and termination.

Parallel Control Cables

Instructions for connecting parallel control cables in a ring configuration for reliability.

Emergency Power Off (EPO)

Explains how to connect external EPO facilities for parallel systems, similar to single units.

Battery Circuit Breaker Box

Describes the function and types of battery circuit breaker boxes for protection and isolation.

6.0 UPS SPECIFICATIONS

Conformity and Standards

Lists standards and certifications the UPS system complies with.

UPS Environmental

Specifies the environmental conditions under which the UPS can operate without degradation.

UPS Mechanical Characteristics

Details the physical dimensions, weight, heat dissipation, and airflow of the UPS.

UPS Electrical Characteristics

Provides detailed electrical specifications including input, output, and battery parameters.

Battery Manufacturers and Models

Lists the approved battery manufacturers and models used in the NX UPS.

Input Rectifier

Electrical specifications related to the input rectifier, including voltage, current, and power factor.

DC Intermediate Circuit

Specifications for the DC intermediate circuit, including battery voltage and current.

Inverter Output

Electrical characteristics of the inverter output, including voltage, power, and regulation.

Bypass Input

Electrical specifications for the bypass input, including voltage tolerance and overload capacity.

7.0 INSTALLATION DRAWINGS

Dimensional view- front and left side views

Illustrates the front and left side dimensions and key features of the UPS cabinet.

Dimensions continued-top and bottom views

Continues dimensional views, showing top and bottom layouts of the UPS cabinet.

Main components-typical unit

Identifies the main internal and external components of a typical UPS unit.

Cable connections

Diagrams showing AC output, input, neutral, earth, and battery cable connection points.

Location of internal batteries

Illustrates the placement and dimensions of internal batteries within the UPS cabinet.

Battery connections

Shows the wiring schematic for connecting batteries in layers within the cabinet.

Battery cabinet interconnection

Diagrams and table detailing how to interconnect battery cabinets with the UPS module.

Maintenance Bypass interconnection

Illustrates the cabling connections between the UPS module and the Maintenance Bypass Cabinet.

NX 1+1 parallel cabinet interconnections

Shows wiring diagrams for 1+1 parallel cabinet configurations.

Lineup detail-SlimLine distribution cabinet to NX

Details the lineup and wiring for a SlimLine distribution cabinet connected to the NX.

Lineup detail-1+N Type A connection to NX

Illustrates connections for a 1+N Type A parallel system configuration.

Lineup detail-1+N Type A1 connection to NX

Details connections for a 1+N Type A1 parallel system configuration.

Lineup detail-1+N Type B connection to NX

Shows wiring for a 1+N Type B parallel system configuration.

Lineup detail-1+N Type B1 connection to NX

Illustrates connections for a 1+N Type B1 parallel system configuration.

Lineup detail-1+N Type C connection to NX

Details wiring for a 1+N Type C parallel system configuration.

Lineup detail-1+N Type C1 connection to NX

Shows connections for a 1+N Type C1 parallel system configuration.

Lineup detail-1+N Type D connection to NX

Illustrates wiring for a 1+N Type D parallel system configuration.

SlimLine locations

Diagrams showing possible cabinet lineups involving SlimLine components.

8.0 SPECIFICATIONS AND TECHNICAL DATA

Lug Size and Torque Requirements

Provides tables for lug sizes and torque specifications for various electrical connections.

Table 27 Torque specifications

Detailed torque specifications for nut and bolt combinations and compression lugs.

Table 28 Battery torque rating

Torque ratings for battery terminal connections, both initial and annual.

Cable Lengths: Floor to Connection Point Inside UPS

Table providing distances from floor or top of unit to internal UPS connection points for cable length calculation.

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