Related Manuals for Liebert NX 60 kVA
Summarization of Contents
Installing the UPS Module
Brief Introduction to UPS Installation
Provides a short summary of factors for selecting location and connecting the UPS and associated devices.
Unpacking the Liebert NX UPS
Detailed instructions on carefully removing the UPS from its packaging to avoid damage.
Initial Check of UPS Components
Guidelines for inspecting the UPS and battery externally and internally for shipping damage and verifying the UPS label.
Location Selection for UPS Installation
Specifies requirements for installing the UPS indoors in a clean, adequately ventilated environment, considering UPS room conditions.
Positioning the UPS Unit
Lists conditions for selecting a location to prolong service life, including flat ground, air exchange, and temperature.
External Protective Device Requirements
Explains the need for external circuit breakers at the input AC supply of the UPS for safety and compliance.
Power Cable Specifications
Provides instructions for cable design, compliance with wiring practices, environmental conditions, and IEC60950-1.
UPS Cable Connection Procedure
Details the procedures for connecting power cables to the UPS, including important safety warnings.
Control Cables and Communication Setup
Describes the dry contact ports and communication ports for connecting external signals and network interfaces.
BCB Port Functionality
Explains the BCB port functionality and its connection details for control.
Maintenance and Output Switch State Port
Details the maintenance switch and output switch state port for system control and monitoring.
Output Dry Contact Port for Backfeed Protection
Describes the output dry contact port providing relay signals for external air breaker control.
Remote EPO Input Port Operation
Explains the Emergency Power Off (EPO) function and the remote input port for emergency shutdown.
Serial and IntelliSlot Communication Ports
Details serial data ports for commissioning and communication cards, including IntelliSlot capabilities.
NX IntelliSlot Communication Options
Covers optional communication cards for field installation, integrating with protocols like SNMP and Modbus.
IntelliSlot Web Card (IS-WEBL)
Describes the network interface card for real-time data and status information via Ethernet and web browser.
IntelliSlot 485 Interface Card (IS-485L)
Explains the card for Building Management System monitoring and control using Modbus protocol via RS-485.
IntelliSlot Relay Card (IS-485L)
Details the relay card for contact closure, enabling remote monitoring of alarm conditions.
NX Communication Options Overview
Lists supported monitoring devices for IntelliSlot ports, including Web, 485L, and Relay cards.
Battery Management and Safety
Brief Introduction to UPS Battery System
Introduces the UPS battery string, backup time dependency on capacity, and parallel string connections.
Battery Safety Precautions
Emphasizes precautions for high voltage operation, handling batteries, and ensuring safety during maintenance.
Battery Power Cable Installation
Provides instructions for installing and connecting batteries, including clearance and proper handling.
Battery Maintenance Procedures
Outlines procedures and precautions for battery maintenance, including checking terminals and temperature.
Battery Recycling Guidelines
Covers guidelines for handling and disposing of disused batteries according to regulations and environmental safety.
External Battery Cubicle Connection
Provides recommendations for rated current and CSA connection cables for external battery cubicles.
Installing Parallel UPS Systems
Overview of Parallel UPS Installation
Describes connecting up to four UPS units in parallel and installation requirements for parallel systems.
1 + N Parallel System Installation
Details the installation of 1+N parallel systems, including cabinet positioning and system connections.
External Protective Devices for Parallel Systems
Refers to Chapter 1 for installing external protective devices relevant to parallel systems.
Power Cable Guidelines for Parallel Systems
Explains power cable wiring similarities to single modules and requirements for bypass and main input supplies.
Auxiliary Control Wiring in Parallel Systems
Guides on installing auxiliary wiring to protect the system and enable single UPS isolation for testing.
Parallel Control Cables for 1+N Systems
Explains the connection of parallel control cables in a ring configuration for system reliability and redundancy.
Dual Bus System Configuration
Describes dual bus systems for high reliability loads, using LBS for synchronization between UPS systems.
Dual Bus System Cabinet Installation
Details cabinet installation for dual bus systems, placing modules side by side and connecting them.
External Protective Devices for Dual Bus Systems
Refers to Chapter 1 for external protective device installation in dual bus systems.
Power Cable Requirements for Dual Bus Systems
Explains power cable wiring for dual bus systems, referencing single module system requirements.
Control Cable Connections for Dual Bus Systems
Covers connecting optional LBS cables between UPS systems for NX-to-NX dual bus configurations.
UPS Operation Procedures
Brief Introduction to UPS Operation
Introduces the UPS's function in providing continuous, high-quality AC power using PWM and DSP technology.
Operating Theory of the UPS
Explains how the rectifier, inverter, and battery work together to supply power to the load.
Static Transfer Switch Functionality
Describes the function of the STS in switching the load between inverter and bypass power sources.
1 + N Parallel System Operation
Details the setup and features of 1+N parallel systems, including capacity increase and load sharing.
UPS Operating Modes
Lists the different operating modes of the UPS, including Normal, Battery, Bypass, and Maintenance modes.
Normal Mode Operation
Explains the UPS operation drawing power from the AC mains input source for the rectifier and inverter.
Battery Mode Operation
Describes UPS operation where the battery supplies backup power to the load through the inverter during mains failure.
Automatic Restart Mode
Explains the mode where the UPS can be programmed for automatic restart after an AC mains failure and battery EOD.
Bypass Mode Operation
Details operation when the load is transferred to the bypass source due to inverter issues or overload.
Maintenance Mode (Manual Bypass)
Describes using the maintenance switch to transfer the load to the maintenance bypass for UPS servicing.
Parallel Redundancy Mode Operation
Covers expanding system capacity and reliability by paralleling multiple UPS modules.
Battery Management Setup
Outlines normal battery functions like constant current/voltage charge and temperature compensation.
Advanced Battery Functions
Describes advanced functions like battery maintenance tests, including conditions and triggers for the tests.
Battery Protection Settings
Details battery protection mechanisms such as low pre-warning, EOD protection, and disconnect device alarms.
Operator Control and Display Panel
Introduction to the Operator Panel
Introduces the operator control and display panel as the access point for UPS control and monitoring.
UPS Indicators Overview
Explains the indicators on the mimic power flow chart representing power paths and UPS operational status.
Audible Alarms (Buzzer) Description
Describes the three types of audible alarms indicating UPS status or faults.
Control Keys Functionality
Details the functions of the five control keys on the operator panel for EPO, starting/stopping, and fault reset.
LCD and Menu Keys Operation
Covers the LCD display and menu keys for browsing parameters, settings, and historical records.
LCD Screen Types
Describes the Start Screen and Primary Screen layouts displayed on the UPS LCD.
Start Screen Display
Details the initial screen displayed after the UPS self-test, showing the manufacturer logo for approximately 15 seconds.
Primary Screen Layout
Explains the primary screen layout, divided into system information, data, menu, and keypad windows.
Default Screen Display
Describes the default screen that appears when no alarms are active and the LCD backlight turns off.
Detailed Description of Menu Items
Provides detailed explanations of menu items related to system information, mains, bypass, output, load, system, battery, event, language, settings, and commands.
Prompt Window Functions
Explains the prompt window that alerts users to conditions or requests confirmation for commands.
Status and Alarm List
Lists all UPS status and alarm messages displayed in the Event or Records menus, with explanations for each.
Operating Instructions
Power Switches Location
Identifies the UPS power switches including input, bypass, maintenance, output, and battery circuit breakers.
UPS Startup Procedures Overview
Provides procedures for starting up the UPS in normal mode and without input supply.
Startup Procedure in Normal Mode
Details the step-by-step process for turning on the UPS from a powered-down state in normal mode.
Startup Without Input Supply
Outlines the steps for starting the UPS using battery power when the input supply is unavailable.
Transfer Between Operating Modes
Covers procedures for transferring the UPS between Normal, Battery, Bypass, and Maintenance modes.
Transfer from Normal to Battery Mode
Explains how to transfer the UPS to battery mode by opening the mains input switch.
Transfer from Normal to Bypass Mode
Describes transferring the UPS to bypass mode by pressing the INVERTER OFF button.
Transfer from Bypass to Normal Mode
Details how to transfer the UPS from bypass mode back to normal operation using the INVERTER ON button.
Transfer from Normal to Maintenance Mode
Provides steps to transfer the load to the maintenance bypass for UPS servicing.
Transfer from Maintenance to Normal Mode
Outlines the procedure to transfer the load back from maintenance bypass to the inverter.
Procedure for Completely Powering Down the UPS
Describes the steps to completely power down the UPS and remove power from the load by opening all switches.
Powering Down UPS While Maintaining Load Power
Explains how to power down the UPS while keeping the load supplied via an external maintenance bypass.
Isolation Procedure for Parallel Systems
Details the procedure to isolate a single UPS unit within a parallel system for maintenance.
Insertion Procedure for Parallel Systems
Describes how to reintegrate a previously isolated UPS unit back into a parallel system.
Emergency Power Off (EPO) Procedure
Explains the Emergency Power Off (EPO) procedure to switch off the UPS and stop supplying the load in emergencies.
Automatic Restart Functionality
Covers automatic restart functionality after mains failure, EOD, and auto recovery settings.
UPS Reset Procedure
Provides steps to restore the UPS to normal operation after certain faults or shutdowns.
Selecting Display Language
Guides on selecting the display language from a list of 12 available options on the LCD.
Changing Date and Time Settings
Explains how to change the system date and time settings on the UPS.
Control Password Configuration
Details the password protection feature for limiting access to control functions and UPS/battery tests.
Service Procedures
Service Procedures for Power and Bypass Modules
Covers servicing procedures for power modules and bypass modules, including safety notes and removal steps.
Service Procedure for Power Modules
Details the steps for servicing or replacing power modules, including setting the ready switch and removing the module.
Service Procedure for Bypass Module
Outlines the procedure for servicing the bypass module, including transferring to maintenance mode and removing the module.
Air Filter Replacement Procedure
Provides instructions for replacing the air filters located on the back of the UPS front door.
Product Specifications
Conformity and Standards
Lists the European and international standards to which the UPS has been designed to conform.
Environmental Characteristics
Details environmental parameters such as noise levels, altitude, humidity, and operating temperatures.
Mechanical Characteristics
Provides mechanical specifications including dimensions, weight, color, and protection degree.
Electrical Characteristics: Input Rectifier
Lists electrical characteristics for the rectifier's AC input, including voltage, frequency, power factor, and current.
Electrical Characteristics: Intermediate DC Circuit
Details electrical characteristics of the intermediate DC circuit, including battery bus voltage, charge modes, and EOD voltage.
Electrical Characteristics: Inverter Output
Provides electrical characteristics for the inverter output to the critical load, including voltage, frequency, and overload capabilities.
Electrical Characteristics: Bypass Input
Lists electrical characteristics for the bypass input, including rated voltage, current, frequency, and voltage tolerance.
Efficiency, Heat Losses, and Air Exchange
Presents data on overall efficiency, inverter efficiency, heat losses, and air exchange rates under various operating conditions.
Transformer Versions
Input Transformer Version Details
Describes the UPS supply with an insulating transformer at the UPS input for electrical insulation.
Output Transformer Version Details
Details the UPS supply with an insulating transformer at the UPS output for electrical insulation between the UPS and load.
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