Emerson Liebert NXE 20kVA User Manual

POWER AVAILABILITYLiebert NX™ USER MANUAL 10-20kVA50/60Hz400V

2User-Serviceable PartsAll equipment maintenance and servicing procedures involving internal access requires the use of a tool and should be carried o

Single Module UPS Installation31.0 SINGLE MODULE UPS INSTALLATION1.1 IntroductionThis following section describes the requirements that must be taken

Single Module UPS Installation41.3 Location1.3.1 UPS RoomThe UPS and its internal battery is intended for indoor installation and should be located in

Single Module UPS Installation51.4 PositioningThe cabinet is mounted on four castor-wheels for ease of positioning and for short distance movement. Ja

Single Module UPS Installation61.4.4 ClearancesThe Liebert NX has no ventilation grilles at either side of the UPS. To enable routine tightening of po

Single Module UPS Installation7Earth Leakage (RCD):Any residual current detector (RCD) installed upstream of the UPS input supply must be:• sensitive

Single Module UPS Installation8Table 1 Maximum steady state AC and DC currentsUPSRating(kVA) Nominal Current, Amps Busbar Stud Size Input Mains Curre

Single Module UPS Installation91.6.1 Cable TerminationOnce the equipment has been finally positioned and secured, connect the power cables as describe

Single Module UPS Installation10Internal UPS Battery Connection7. The battery consists of a series string connection of 5 x 8 (or 10) x 12V 6-cell bat

Single Module UPS Installation111.7 Control Cables and Communication1.7.1 Monitor Board FeaturesBased on your site’s specific needs, the UPS may requi

Single Module UPS Installation121.8 Dry ContactsThe UPS provides input dry contacts and output dry contacts.1.8.1 Input Dry ContactsThere are several

Single Module UPS Installation131.8.3 External Circuit-Breaker InterfaceJ10 is the interface to any external battery circuit breaker (BCB).1.8.4 Outpu

Single Module UPS Installation141.8.5 Emergency Power Off InputThe UPS has an Emergency Power Off (EPO) function that operates by a button on the cont

Single Module UPS Installation15X7: External Battery Temperature Detector InterfaceInterface for TMP12Z temperature detector, normally connected to an

Single Module UPS Installation161.8.6 External Bypass Switch InterlockEXT-Maint X3-1&2 on UPS Parallel Board M3 (leave open if no external bypass

Battery Installation172.0 BATTERY INSTALLATION2.1 IntroductionThe UPS battery bank consists of battery blocks connected in series to provide a D.C. st

Battery Installation182.2 SafetySpecial care should be taken when working with the batteries associated with the Liebert NX UPS system. When all the c

Battery Installation192.3 Battery Cabinet2.3.1 IntroductionThis cabinet can also be used in conjunction additional cabinets, to provide the necessary

Battery Installation202.3.6 Battery Temperature Board (Optional)The optional external battery temperature sensor kit contains one probe and one temper

Battery Installation212.3.9 General Arrangement Drawings Refer to Figures 7 and 8 for general arrangement of battery cabinet models.Figure 7 Battery c

iTABLE OF CONTENTS1.0 SINGLE MODULE UPS INSTALLATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .31.1 Introductio

Battery Installation22Figure 8 Battery cabinet with fuse or optional circuit breaker locations2.4 Battery Power Cables2.4.1 Connection PrinciplesThe f

Battery Installation232.4.2 Fitting the Batteries1. In general, at least 10mm (3/8") must be left unobstructed on all vertical sides of the batte

UPS Multi-Module Installation243.0 UPS MULTI-MODULE INSTALLATION3.1 GeneralThe installation of a multi-module UPS configuration must follow the instal

UPS Multi-Module Installation253.2 Paralleled UPS Modules The basic installation procedure of a parallel system comprising two or more UPS modules is

UPS Multi-Module Installation26Figure 12 Dry contacts, multiple UPS modules with distribution panel3.2.2 External Protective DevicesRefer to the instr

UPS Multi-Module Installation273.2.4 Control CablesIntermodule ControlShielded and double insulated control cables available in lengths of 5, 10 and 1

UPS Multi-Module Installation283.3.3 Power CablesThe wiring of power cables is similar to that of single module system except that the output of the u

UPS Multi-Module Installation29Figure 15 Typical dual bus system configuration with static transfer switch and Load Bus Synch3.4.2 External Protective

UPS Multi-Module Installation303.4.4 Control WiresFor Liebert NX to NX dual bus configuration, interconnect the optional DBS cable between any DBS por

Installation Drawings314.0 INSTALLATION DRAWINGSFigure 17 Electrical connectionsX5X3X4X1X2 Ext EPOBCBMonitor BoardInputMBCExternal BatteryBattUPSParal

ii2.4 Battery Power Cables. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 222.4.1 Con

Installation Drawings32Figure 18 General arrangement—10-20kVA UPS moduleFRONT VIEWLEFT SIDE VIEWLeveling feetDetail A, rear of unitshown without side

Installation Drawings33Figure 19 10-20kVA NX front view with doors open12345External Battery InputBypass InputMain InputOutputT1T21) Main/Bypass Input

Installation Drawings34Figure 20 Location of parallel logic board M3 Figure 21 Internal battery layout and connectingBatteryStartInterfaceNXe 10-20kVA

Installation Drawings35Figure 22 Internal battery layout136mm160mm160mm160mm160mm151mmBattery562mm347mm

Operation365.0 OPERATION5.1 IntroductionLiebert’s NX™ Uninterruptible Power System system provides continuous, high-quality AC power to your business-

Operation375.1.2 Static Transfer SwitchThe circuit blocks labeled Static Switch in Figure 23 contain electronically controlled switching cir-cuits tha

Operation385.1.4 Redundant Control Power Supply BoardThe UPS is equipped with two identical and fully redundant control power supply boards. Each of t

Operation395.2.1 Features of NX Multi-Module UPS Configurations1. The hardware and firmware of single module UPS units is completely compatible with t

Operation405.3.4 Bypass ModeIf the inverter overload capacity is exceeded, or if the inverter becomes unavailable for any reason, the static transfer

Operation415.4 Battery Management—Set During Commissioning5.4.1 Normal Function• Constant charging current—Current can be set up to limit charging pow

iii5.4.2 Advanced Functions (Software Settings Performed by the Commissioning Engineer) . . . . . 415.5 Battery Protection (settings by commissioning

Operating Procedures426.0 OPERATING PROCEDURES6.1 IntroductionThe NX can operate in any of four modes, as shown in Table 10. This section provides ins

Operating Procedures436.2 UPS StartupThe NX must be fully installed and commissioned before startup, and external power isolators must be closed. Once

Operating Procedures445. Turn the rotary switch to NORMAL, then press the INVERTER ON control button for 2 seconds. The inverter will start and the in

Operating Procedures456.3 Switching the UPS from Normal to Maintenance BypassFollow the procedure below to transfer the load from the inverter output

Operating Procedures466.5 Powering Down the UPS and Maintaining Power to LoadIf the UPS needs to be shut down completely while maintaining power to th

Operating Procedures476.6 Emergency Shutdown With EPOThis circuit has been designed to switch off the UPS in emergency conditions (i.e., fire, flood,

Operating Procedures486.10 Changing the Current Date and TimeTo change the system date and time:1. From the main menu, press the F1 (shift) key to mov

Operator Control Panel and Display497.0 OPERATOR CONTROL PANEL AND DISPLAY7.1 IntroductionThe operator control panel and display is located on the fro

Operator Control Panel and Display507.1.1 Mimic Power FlowThe LEDs mounted on the mimic flow chart represent the various power paths and current UPS o

Operator Control Panel and Display517.1.3 Direct Access Push Buttons (Keys) Press and hold Direct Access key briefly until acknowledged by a single be

ivFIGURESFigure i Model number nomenclature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Operator Control Panel and Display52The function of keys F1 to F4 is shown by a self-explanatory icon as appropriate for the particular window. As sho

Operator Control Panel and Display537.1.5 Detailed Description of Menu ItemsThe description that follows refers to the graphic LCD monitor window show

Operator Control Panel and Display54SystemSout (kVA) Sout: Apparent powerPout (kW) Pout: Active powerQout (kVAR) Qout: Reactive powerSingle unit, no p

Operator Control Panel and Display55Current Record WindowKeeps a log the events that resulted in the current mode of operation. Ignores transient cond

Operator Control Panel and Display56Bypass Unable to TraceThis alarm is triggered by an inverter software routine when the amplitude or frequency of b

Operator Control Panel and Display57System Over loadThe UPS parallel system is confirmed to overload when the total load arises above 105% nominal rat

Operator Control Panel and Display58EPO Emergency Power Off direct access key pressed or external command receivedTransfer ConfirmPrompt to press “ent

Operator Control Panel and Display597.3 Prompt (Pop-Up) WindowsThe prompt window is displayed during the operation of the system to alert the user to

Operator Control Panel and Display607.5 Default Screen SaverThis default screen is displayed following at least 2 minutes of operation with no new ala

Options—For Assembly Inside the UPS Cabinet618.0 OPTIONS—FOR ASSEMBLY INSIDE THE UPS CABINETSeveral items of optional equipment are available for conn

vTABLESTable 1 Distance from floor to connection point on the equipment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8Table 2 Maxi

Options—For Assembly Inside the UPS Cabinet628.1.2 Redundant Fan for Power Module In addition to ensure sufficient cooling power at various operation

Options—For Assembly Inside the UPS Cabinet638.1.3 OC Web Card - SNMP/HTTP Network Interface CardThis network interface card provides all real-time da

Options—For Assembly Inside the UPS Cabinet648.1.4 Relay CardThe Relay card provides voltage-free contact closures for remote monitoring of alarm cond

Options—For Assembly Inside the UPS Cabinet65Figure 37 SiteNet MultiPort4 Intellislot pin configurationTable 28 SiteNet MultiPort4 Intellislot pin ass

Options—For Assembly Inside the UPS Cabinet668.2 OC485 Web Card – Modbus, Jbus, IGM NetThe OpenComms 485 Card facilitates SiteScan Web or Building Man

Technical Specifications679.0 TECHNICAL SPECIFICATIONS9.1 Conformity and StandardsThe UPS has been designed to conform to the following European and i

Technical Specifications68Table 33 Mechanical characteristicsRated Power, kVAUnit ofMeasurement 10 15 20Dimensions, WxDxH mm (in)600x700x1400(23-9/16x

Technical Specifications69Table 35 Battery Intermediate DC CircuitRated Power, kVAUnit ofMeasurement 10 15 20Battery Bus Voltage VDCNominal: 480V (VRL

Technical Specifications70Table 37 Bypass mains inputRated power, kVAUnit ofMeasurement10 15 20Rated AC Voltage1VAC380/400/415 Vthree-phase four-wire,

viFigure i Model number nomenclatureUPS Single Module Liebert NXe UPS module ratings:10, 15, 20kVA (with internal battery)Example: NXE0A0010U =10kVA m

The Company Behind the ProductsWith over a million installations around the globe,Liebert is the world leader in computer protectionsystems. Since its

1SAFETY PRECAUTIONSThis manual contains information concerning the installation and operation of this Emerson Network Power Liebert NX Uninterruptible