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Summary of Contents for Liebert NX 30
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Page 1: Uninterruptible Power Supply
Liebert NX 30/40/60kVA UNINTERRUPTIBLE POWER SUPPLY USER MANUAL 10H52192UM60 - Rev. 1... - Page 2 All rights, including rights created by patent grant or registration of utility model or design, are reserved. Delivery subject to availability. Right of technical modification reserved. Your Liebert NX model may differ from the one displayed on the front cover. User Manual 10H52192UM60 - Rev. 1 - 09/2011...
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Page 3: Table Of Contents
Contents Liebert NX Contents Chapter 1 Installing the UPS Module ..........................7 1.1 Brief Introduction ..............................7 1.2 Unpacking ................................8 1.3 Initial Check ................................8 1.4 Location Selection ..............................9 1.4.1 UPS Room ..............................9 ... - Page 4 Liebert NX Contents 2.3.1 Overview ..............................23 2.3.2 Installing the Batteries ..........................23 2.3.3 Connecting the Batteries ......................... 23 2.4 Battery Maintenance ............................25 2.5 Battery Recycling ..............................25 2.6 Reference Current and Connection of External BCB ..................26 ...
- Page 5 Contents Liebert NX 5.1.2 Audible Alarm (Buzzer) ..........................38 5.1.3 Control Keys ............................38 5.1.4 LCD and Menu Keys ..........................38 5.2 LCD Screen Type ............................... 39 5.2.1 Start Screen ............................. 39 5.2.2 Primary Screen ............................39 ...
- Page 6 Liebert NX Contents 8.3 Mechanical Characteristics ..........................57 8.4 Electrical Characteristics (Input Rectifier) ......................58 8.5 Electrical Characteristics (Intermediate DC Circuit) .................... 58 8.6 Electrical Characteristics (Inverter Output) ......................59 8.7 Electrical Characteristics (Bypass Input) ......................59 ...
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Page 7: Chapter 1 Installing The Ups Module
Installing the UPS Module This chapter explains how to install the Liebert NX 30 - 60kVA UPS (hereinafter referred to as UPS) module, and includes instructions about unpacking it, carrying out the initial checks, selecting the location, positioning it, and connecting it to external protective devices and cables. -
Page 8: Unpacking
Liebert NX Installing the UPS Module 1.2 Unpacking To avoid damaging the equipment, be extremely careful when removing the packaging. Check all packaging materials to ensure that no items are discarded. Position the sloped pallet top cover in front of the pallet, as shown in Figure 1-1 and fix them together using the hook, then roll the UPS gently down the resulting slope, as illustrated in Figure 1-1. -
Page 9: Location Selection
Installing the UPS Module Liebert NX 1.4 Location Selection Note The UPS and external battery cubicles should be installed on a concrete or other noncombustible surface. Ensure that the floor is capable of supporting the weight of the UPS and associated devices. -
Page 10: Positioning
Liebert NX Installing the UPS Module 1.5 Positioning To prolong the service life, the selected location must satisfy the following conditions: flat ground convenient wiring space for easy operation on UPS sufficient air exchange to dissipate heat produced by UPS ... -
Page 11: Final Positioning And Fixing
Installing the UPS Module Liebert NX 1.5.5 Final Positioning and Fixing Figure 1-2 illustrates the UPS installation dimensions. Once the unit is in its final position, lower the brake pads, by unscrewing them with a suitable wrench, until they rest on the ground. If the UPS is mounted on a raised floor, a suitable pedestal should be designed, which should be able to support the weight of the UPS. -
Page 12: Rectifier And Bypass Input
Liebert NX Installing the UPS Module 1.6.1 Rectifier and Bypass Input Overcurrents Common bypass: Install suitable protective devices on the incoming mains supply distribution system, taking into account the power cable current-carrying capacity and overload capacity of the system (see Table 8-6). Under normal circumstances, we recommend magnetic circuit breakers with IEC60947-2 tripping curve C (normal) at 125% of the current listed in Table 1-1. -
Page 13: Power Cable
Installing the UPS Module Liebert NX 1.7 Power Cable The cable design must comply with the instructions provided in this section, conform to local wiring practices, take the environmental conditions into consideration, and comply with IEC60950-1. 1.7.1 Maximum Steady State AC and DC Currents... -
Page 14: Cable Connection
Liebert NX Installing the UPS Module 1.7.3 Cable Connection Important The operations described in this section must be performed by authorized personnel. If you have any questions, please contact the local Emerson customer service center immediately. Warning 1. Before connecting the cables, ensure that you are aware of the location and state of the breaker that connects the UPS input to the mains distribution panel. - Page 15 Installing the UPS Module Liebert NX Figure 1-4 UPS Power Terminals Note: Main input: U1, V1, W1, N1 Bypass input: U2, V2, W2, N2 UPS output: U3, V3, W3, N3 Battery input: +, -, BATT N Earth: PE 3. Connect the protective earth cable and all other earth cables required to the earth terminals (PE).
- Page 16 Liebert NX Installing the UPS Module System Output Connection 5. Connect the system output cables between the UPS output terminals (U3-V3-W3-N3) and the critical load. See Table 1-1 for the torque. Ensure correct phase rotation. Warning If the load equipment will not be ready to accept power when the commissioning engineer arrives, ensure that the ends of the system output cables are safely isolated.
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Page 17: Control Cables And Communication
Installing the UPS Module Liebert NX 1.8 Control Cables and Communication As shown in Figure 1-5, there are a number of dry contact ports (J5 to J10) and communication ports (RS485 port, RS232 port and three IntelliSlot ports) on the bypass module front panel. -
Page 18: Bcb Port
Liebert NX Installing the UPS Module 1.8.2 BCB Port J6 is the BCB port. The port is shown in Figure 1-7 and described in Table 1-4. Figure 1-7 BCB Port Table 1-4 BCB Port Description Position Name Description J6.1 BCB driver signal (only for use with BCB control board) BCB contact state. -
Page 19: Output Dry Contact Port (Backfeed Protection)
Installing the UPS Module Liebert NX Table 1-5 Description of Maintenance Switch and Output Switch State Port Position Name Description External maintenance switch state. Connection J9.1 to J9.4. The requirement for the external breaker auxiliary is as follows: J9.1 EXT_Q3 If the external maintenance switch is in the open position, the external bypass auxiliary contact must be closed. -
Page 20: Rs485 Port, Rs232 Port, And Intellislot Port
UPS commissioning and service activities. IntelliSlot ports 1 to 3 support the following communication cards: 1. IS-WEBL, IS-485L, IS-485EXI, IS-RELAY These cards communicate with the UPS via the Liebert Velocity protocol and with the external network using the industry standard protocol. Note 1. -
Page 21: Intellislot Relay Card (Is-485L)
Liebert NX 1.8.10 IntelliSlot Relay Card (IS-485L) The Liebert IntelliSlot relay card provides contact closure for remote monitoring of alarm conditions in your UPS. The card is easy to install and can be integrated with other relay contact monitoring systems. -
Page 22: Chapter 2 Battery
Liebert NX Battery Chapter 2 Battery This chapter provides relevant information about the battery, including a short introduction, and information on battery safety, battery power cables, battery maintenance and recycling, and the reference current. 2.1 Brief Introduction The UPS battery string consists of batteries connected in series in order to supply the rated DC input voltage for the UPS inverter. -
Page 23: Battery Power Cable (External Batteries Only)
Battery Liebert NX Warning: Hazardous battery voltage present behind covers 5) The battery must be installed and stored in a clean, cool, and dry environment. Do not install the battery in a sealed battery chamber or a sealed room. The battery room ventilation must comply with EN50272-2001 as a minimum requirement. Failure to follow this instruction may result in battery bulging, fire, or even injuries. - Page 24 Liebert NX Battery accordance with the labels on the battery and the UPS. Reverse battery connection may result in explosion, fire, damage to the battery, damage to the UPS, or personal injury. 5. After connecting the battery cables, install an insulating shroud for each terminal.
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Page 25: Battery Maintenance
Battery Liebert NX Figure 2-2 Internal Battery Cable Connection (NXr 30-B) 2.4 Battery Maintenance For battery maintenance and maintenance precautions, refer to IEEE-Std-1188-2005 and the relevant manuals provided by the battery manufacturer. Note 1. Periodically check the screws of the battery terminals for loose connection. If there are any loose screws, tighten them immediately. -
Page 26: Reference Current And Connection Of External Bcb
Liebert NX Battery 2.6 Reference Current and Connection of External Battery Cubicle Table 2-1 provides recommendations for the rated current and CSA connection cable. Table 2-1 Reference Table for Selection of Rated Current and CSA Connection Cables (Recommended) UPS rating (kVA) - Page 27 Battery Liebert NX Figure 2-5 Connections Between Battery, BCB, and UPS (3 Wires at Battery Side, Battery Consisting of 36 to 40 Cells) Figure 2-6 INSERIRE DISEGNO INTERCONNESSIONE ARM. BATT + UPS User Manual 10H52192UM60 - Rev. 1 - 09/2011...
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Page 28: Chapter 3 Installing Parallel Systems
Liebert NX Installing Parallel Systems Chapter 3 Installing Parallel Systems This chapter describes how to install and connect a parallel system. 3.1 Overview Up to four UPS units can be connected in parallel to form a parallel system. Parallel systems must be installed in accordance with the UPS module installation procedures and the requirements outlined in this chapter. -
Page 29: External Protective Device
Installing Parallel Systems Liebert NX UPS1 Qin Ext UPS3 UPS2 Supplied by others Bypass Bypass input Mains input Bypass input Mains input Mains input input L1, L1, L2, L3, N L1, L2, L3, L1, L2, L3, N L1, L2, L3,... -
Page 30: Auxiliary Control Wiring
Liebert NX Installing Parallel Systems 3.2.4 Auxiliary Control Wiring Auxiliary wiring must be installed as shown in Figure 3-3 to protect the system and enable a single UPS to be isolated and tested during service. Refer to 1.8.3 Maintenance Switch and Output Switch State Port for auxiliary contact details. -
Page 31: Dual Bus System
Installing Parallel Systems Liebert NX 3.3 Dual Bus System 3.3.1 Installing the Cabinet A dual bus system consists of two independent UPS systems, each containing one or more parallel UPS modules (maximum 4), as shown in Figure 3-6. The dual bus system has high reliability and is suitable for loads with multiple input terminals. For single-input loads, an optional STS can be fitted to start the LBS supplied in standard configuration. - Page 32 Liebert NX Installing Parallel Systems UPS 1 UPS 2 UPS 3 UPS 4 Bypass module Bypass module Bypass module Bypass module LBS cable LBS cable Figure 3-7 Connection of Typical Dual Bus System of Two Parallel Systems UPS 1 UPS 2...
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Page 33: Chapter 4 Operation
Operation Liebert NX Chapter 4 Operation This chapter describes how to operate the UPS, and includes a short introduction and sections on the 1+N parallel system, operating mode, battery management, and battery protection. Warning: Hazardous mains and battery voltage present behind covers No user-serviceable parts are located behind covers that require a tool for their removal. -
Page 34: Static Transfer Switch
Liebert NX Operation 4.1.2 Static Transfer Switch The circuit block labeled STS in Figure 4-1 contains an electronically controlled switching circuit that enables the load to be connected to either the inverter output or to the bypass power source via the static bypass line. During normal system operation, the load is connected to the inverter;... -
Page 35: Normal Mode
Operation Liebert NX 4.3.1 Normal Mode The UPS rectifier derives power from the AC mains input source and supplies DC power to the inverter, which continuously supplies the AC load to the load. Simultaneously, the charger, which derives power from the rectifier, float, or boost, charges the associated backup battery of the UPS. -
Page 36: Advanced Function
Liebert NX Operation 5. EOD protection. When the battery voltage drops to the EOD voltage, the battery converter shuts down automatically and the battery is isolated to avoid further battery discharge. The EOD voltage may be set to any value between 1.6 V/cell and 1.75 V/cell (VRLA) or 0.9 V/cell and 1.1 V/cell (NiCd). -
Page 37: Chapter 5 Operator Control And Display Panel
Operator Control and Display Panel Liebert NX Chapter 5 Operator Control and Display Panel This chapter describes the functions of components on the operator control and display panel of the UPS and how to use them, provides LCD display information, including the LCD screen types, detailed menu messages, prompt windows, and UPS alarm list, and explains how to select the language and change the current date and time. -
Page 38: Audible Alarm (Buzzer)
Liebert NX Operator Control and Display Panel Indicator State Description Solid red Bypass power has fault or is outside specifications, or static bypass switch fault Bypass normal Solid green Load on inverter Flashing green Inverter turning on, starting up, synchronizing... -
Page 39: Lcd Screen Type
Operator Control and Display Panel Liebert NX 5.2 LCD Screen Type 5.2.1 Start Screen When the UPS is switched on, it performs a self-test, and the start screen appears for approximately 15 seconds, see Figure 5-2. Figure 5-2 Start Screen 5.2.2 Primary Screen... -
Page 40: Default Screen
Liebert NX Operator Control and Display Panel 5.2.3 Default Screen During UPS operation, if no alarms are activated within two minutes, the default screen will appear, as shown in Figure 5-4. After a short delay, the LCD backlight will turn off. Press any menu key (F1 to F5) to restore the default screen. - Page 41 Operator Control and Display Panel Liebert NX Menu Item Explanation L-L voltage (V) Line voltage Output Power factor Power factor Sout (kVA) Sout: apparent power Pout (kW) Pout: active power Load Qout (kVAR) Qout: reactive power Load level (%) Load (expressed in percentage of the phase rating load)
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Page 42: Prompt Window
Liebert NX Operator Control and Display Panel Menu Item Explanation Run Time (runtime) Shows the UPS runtime and the bypass runtime: DDDD/HH/MM UPS version Provides UPS inverter, rectifier, bypass, and monitoring software versions. Version UPS model Provides UPS model information, for example, 400V-60Hz. - Page 43 Operator Control and Display Panel Liebert NX Status/Alarm Explanation Batt. Charger Fail The voltage of the battery charger is too high. Control Power 1 Fail The UPS is operating but the control power is abnormal or not available. Mains Phase Reversed The AC input phase rotation is reversed.
- Page 44 Liebert NX Operator Control and Display Panel Status/Alarm Explanation The UPS overload status continues and the overload times out. Note that: 1. The highest loaded phase will indicate overload time-out first. 2. When the timer is active, then the alarm Unit Over Load should also be active as the load is above the nominal rating.
- Page 45 Operator Control and Display Panel Liebert NX Status/Alarm Explanation Inverter in Setting The inverter starts up and is synchronized. Rectifier in Setting The rectifier starts up and is synchronized. Battery Room Alarm The temperature in the battery room is high and requires attention.
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Page 46: Chapter 6 Operating Instructions
Liebert NX Operating Instructions Chapter 6 Operating Instructions This chapter provides detailed instructions for UPS operating procedures. The audible alarm may be activated at various points during these procedures. Press the SILENCE ON/OFF button to silence the audible alarm at any time. -
Page 47: Ups Startup Procedures
Operating Instructions Liebert NX Maintenance switch Figure 6-2 Location of Maintenance Switch of 40-60 kVA UPS 6.2 UPS Startup Procedures These procedures are based on the assumption that the installation is complete, the system has been commissioned by authorized personnel, and the external protective devices are closed. - Page 48 Liebert NX Operating Instructions Indicator State Inverter indicator Output indicator Green Status indicator Amber 4. Ensure that the maintenance switch QS3 is in the OFF position. 5. Press and hold the INVERTER ON button for 2 seconds. The inverter starts up and the inverter indicator flashes green. When the inverter is ready, the UPS transfers from bypass to inverter, the bypass indicator turns off, and the green inverter indicator remains on (not flashing).
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Page 49: Procedure For Startup Without Input Supply
Operating Instructions Liebert NX 6.2.2 Procedure for Startup Without Input Supply 1. Verify that the battery is connected correctly. 2. Close the internal and/or external battery circuit breakers (internal QS6 and QS7). 3. Close the output switch QS4. 4. Press the battery start button (see Figure 6-3) on the front panel of any power module. -
Page 50: Transfer From Bypass Mode To Normal Mode
Liebert NX Operating Instructions 6.3.3 Transfer from Bypass Mode to Normal Mode When the UPS is in bypass mode, press the INVERTER ON button on the operator control and display panel. When the inverter enters normal operation, the UPS is transferred from bypass mode to normal mode. -
Page 51: Procedure For Completely Powering Down The Ups
Operating Instructions Liebert NX 4. For a single UPS, open the maintenance switch QS3; for a 1+N parallel system, open the external maintenance switch. 5. Press and hold the INVERTER ON button for 2 seconds. The inverter starts up and the inverter indicator flashes green. When the inverter is ready, the UPS transfers from bypass to inverter, the bypass indicator turns off, and the green inverter indicator remains on (not flashing). -
Page 52: Insertion Procedure (For One Ups In A Parallel System)
Liebert NX Operating Instructions At this point, the other UPS modules report Parallel Comm. Fail, which is normal. The other UPS modules continue to supply the load through the inverter. 3. Open the output switch QS4 on the UPS. 4. Wait for 10 minutes before carrying out maintenance or repair work on the UPS. -
Page 53: Ups Reset Procedure
Operating Instructions Liebert NX 6.10 UPS Reset Procedure After the EPO is activated or the UPS is shutdown due to inverter overtemperature, overload, battery overvoltage, or too many transfer times, once all appropriate measures have been taken to rectify the problem indicated by the alarm message on the LCD, carry out the following procedures to restore the UPS to normal operation. -
Page 54: Chapter 7 Service
Liebert NX Service Chapter 7 Service This chapter covers UPS servicing, including the service procedures for the power module and bypass modules and the replacement procedure for the air filters. Warning: Hazardous mains and/or battery voltage present behind protective cover 1. -
Page 55: Air Filter Replacement Procedure
Service Liebert NX 7. Close the UPS output switch QS4 and the input switches QS1 and QS2 in turn. Two minutes later, the bypass indicator on the operator control and display panel turns on, indicating that the UPS is operating in bypass mode. - Page 56 Liebert NX Service Figure 7-2 Replacing Air Filter on 40 /60 kVA UPS User Manual 10H52192UM60 - Rev. 1 - 09/2011...
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Page 57: Chapter 8 Product Specifications
Product Specifications Liebert NX Chapter 8 Product Specifications The chapter lists the UPS specifications. 8.1 Conformity and Standards The UPS has been designed to conform to the European and international standards listed in Table 8-1. Table 8-1 European and International Standards... -
Page 58: Electrical Characteristics (Input Rectifier)
Liebert NX Product Specifications 8.4 Electrical Characteristics (Input Rectifier) Table 8-4 Rectifier AC Input (Mains) Rated power (kVA) Item Unit Rated AC input voltage 380/400/415 (3-phase and sharing neutral with the bypass input) Input voltage range 228 to 477 Frequency... -
Page 59: Electrical Characteristics (Inverter Output)
Product Specifications Liebert NX 8.6 Electrical Characteristics (Inverter Output) Table 8-6 Inverter Output (to Critical Load) Rated power (kVA) Item Unit Rated AC voltage 380/400/415 (three-phase five-wire, with neutral reference to the bypass neutral) Frequency 50/60 100 – 105 long time 105 –... -
Page 60: Efficiency, Heat Losses And Air Exchange
Liebert NX Product Specifications 8.8 Efficiency, Heat Losses and Air Exchange Table 8-8 Efficiency, Heat Losses and Air Exchange Rated power (kVA) Item Unit Overall efficiency Normal mode (double-conversion) > 95 Inverter efficiency (DC/AC) (battery at nominal voltage 432 Vdc and full-rated linear load) Battery mode Heat losses &... -
Page 61: Chapter 9 Transformer Versions
Transformer Version Liebert NX Chapter 9 Transformer Versions 9.1 Input Transformer Version This UPS can be supplied with an insulating transformer at the UPS input. This transformer is installed in place of the batteries and provides electrical insulation between the load and the input mains utility. -
Page 62: Output Transformer Version
Liebert NX Transformer Versions 9.2 Output Transformer Version This UPS can be supplied with an insulating transformer at the UPS output. This transformer is installed in place of the batteries and provides electrical insulation between the UPS output and the load. -
Page 63: Appendix 1 Option List
Appendix 1 Option List Liebert NX Appendix 1 Option List Table 1 Option List Option Part Number Comment Relay card IS-Relay Web Card IS-WEBL To be installed in intellislot port 2 (first choice) or 3 Modbus card IS-485L To be installed in intellislot port 2 (first choice) or 3... -
Page 64: Appendix 2 Abbreviations
Liebert NX Appendix 2 Abbreviations Appendix 2 Abbreviations Alternating current Battery circuit breaker Cross sectional area Center tap Direct current Digital signal processor Electromagnetic compatibility End-of-discharge Emergency power off Liquid crystal display Load bus synchronizer MCCB Moulded-case circuit breaker Protective earth...