Table of Contents
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Table of Contents
Related Manuals for Liebert NX 20kVA
Summarization of Contents
IMPORTANT SAFETY INSTRUCTIONS
General Safety Warnings
Critical safety precautions for handling UPS cabinets, batteries, and electrical hazards.
Battery Cabinet Precautions
Specific warnings and handling instructions for all battery cabinets supplied with UPS systems.
1.0 INSTALLATION
1.1 External Inspections
Procedures for checking the UPS and shipping container for damage upon arrival.
1.2 Internal Inspections
Steps for examining the UPS and battery equipment internally for transit damage.
1.4 UPS Location
Criteria for selecting a suitable room environment for UPS installation, focusing on temperature and ventilation.
1.4.1 Environmental Considerations
Criteria for selecting a suitable room environment for UPS installation, focusing on temperature and ventilation.
1.5 Mechanical Considerations
Details on the UPS cabinet construction, access panels, cooling, and mobility features.
1.5.3 Positioning the UPS
Guidance on selecting the optimal location for the UPS unit.
1.5.6 Cable Entry
Details on how cables can be routed into the NX unit from different access points.
1.5.7 Optional Cabinets
Instructions on positioning and connecting Maintenance Bypass Cabinets and Battery Cabinets.
2.0 ELECTRICAL CONNECTIONS
2.1 Power Cabling
Information on factors influencing cable selection, including voltage, current, and installation conditions.
2.1.3 Cabling Guidelines
General guidelines for cable sizing, grounding, and routing, superseding local codes.
2.1.5 Safety Ground
Locating the ground busbar and connecting safety ground cables for proper grounding.
2.1.7 Cabling Procedure
Step-by-step guide for making power connections, including common and dual input configurations.
2.2 Control Cables
Overview of control cable connections and monitor board features.
2.4 UPS Startup
Procedures for starting the UPS system after installation.
2.4.1 Startup Procedure
Step-by-step guide to starting the UPS from a fully powered-down state.
2.5 Switching the UPS from Normal to Maintenance Bypass
Procedure for transferring the load from the inverter to the maintenance bypass.
3.0 BATTERY INSTALLATION
3.2 Safety
Critical safety precautions when working with the NX system's batteries and high voltages.
3.4 Temperature Considerations
Impact of temperature on battery performance and recommended operating ranges.
3.6 External Battery Cabinet Installation
Guidelines for installing external battery cabinets and connecting them to the UPS.
3.7.2 Connecting the Battery Cabinet to the UPS
Step-by-step instructions for connecting power and control cables between battery cabinets and the UPS.
4.0 MAINTENANCE BYPASS CABINET
4.2 UPS Mode
Describes the UPS operation mode where the load is protected by the UPS.
4.3 Bypass Mode
Explains Bypass Mode where the load is powered via bypass, not protected by UPS.
4.5 Mounting the Cabinet
Guidelines for mounting the Maintenance Bypass Cabinet, considering ventilation and clearance.
4.8 Operating Procedures
Procedures for operating the maintenance bypass cabinet, including startup and shutdown.
4.8.3 Transferring System from UPS to Maintenance Bypass Operation
Steps to switch the load from UPS to maintenance bypass mode.
5.0 OPTIONS
5.1 Dual Bus Synchronizer
Explains the function of the Dual Bus Synchronizer (DBS) for synchronizing UPS systems.
5.2 Configuring Parallel System Operation
Guidance on setting up parallel operation for Liebert NX UPS modules.
5.4 Commissioning a Parallel System
Steps for checking wiring and setting parameters for parallel UPS system commissioning.
5.5 Parallel System Startup
Procedure for starting each UPS module and verifying normal parallel operation.
6.0 SPECIFICATIONS
6.1 Conformity and Standards
Lists the standards to which the Liebert NX UPS has been designed and approved.
6.2 UPS Environmental
Specifies the environmental conditions under which the UPS is designed to operate.
6.3 UPS Mechanical Characteristics
Details the physical dimensions, weight, ventilation, and color of the UPS unit.
6.4 UPS Electrical Characteristics
Details the electrical characteristics of the UPS, including battery, rectifier, and inverter.
8.0 SPECIFICATIONS AND TECHNICAL DATA
8.1 Lug Size and Torque Requirements
Provides specifications for lug sizes and torque values for electrical connections.
8.2 Cable Lengths: Floor to Connection Point Inside UPS
Provides distances from floor to connection points within the UPS for cable length calculation.
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