Emerson NXL 250 Installation Manual

AC PowerFor Business-Critical Continuity™Liebert® NXL™Installation Manual – 250-400kVA, 60Hz, Three Phase Single-Module

UPS Electrical Installation62.0 UPS ELECTRICAL INSTALLATIONThis chapter provides guidelines for qualified installers who must have knowledge of local

UPS Electrical Installation7The following are guidelines only and superseded by local regulations and codes of practice where applicable:• Take specia

UPS Electrical Installation8Bottom Cable EntryWhen making the power connections for bottom cable entry, the recommended order of pull-ing and installi

UPS Electrical Installation92.3.1 Dry ContactsVolt-free and isolated contacts are used for interfacing to customer connections external to the NXL uni

UPS Electrical Installation10Switch Auxiliary Inputs Dry ContactsControl Status Output Dry ContactsStatus signals are outputs through volt-free, norma

Optional Equipment113.0 OPTIONAL EQUIPMENT3.1 Single-Module System Options3.1.1 Matching Maintenance Bypass CabinetA matching Liebert NXL Maintenance

Installation Drawings124.0 INSTALLATION DRAWINGSFigure 3 Main components location, 250kVA Liebert NXL UPSHMI ScreenEMO Button(optional)LiebertIntellis

Installation Drawings13Figure 4 Outline drawing, 250kVA Liebert NXL UPS71.8"(1823mm)34.8"(884mm)33.5"(850mm)76.8"(1950mm)17.6"

Installation Drawings14Figure 5 Main components location, 300kVA Liebert NXL UPSHMI ScreenEMO Button(optional)LiebertIntellislotBays®CustomerInterface

Installation Drawings15Figure 6 Outline drawing, 300kVA Liebert NXL UPS

CONTACTING LIEBERT FOR SUPPORTTo contact Liebert Services for information or repair service in the United States, call 1-800-LIEBERT (1-800-543-2378).

Installation Drawings16Figure 7 Input/output conduit detail drawing, 250-300kVA Liebert NXL UPSOUTPUTNEUTRALINNER PANELREMOVEDFOR CLARITYSHOWN IN EXTE

Installation Drawings17Figure 8 Top cable entry routing and installation orderThe cables must be routedaround the fault braces. This isto prevent the

Installation Drawings18Figure 9 Bottom cable entry routing and installation orderSIDE VIEWFAULT BRACEOUTPUTFAULT BRACERECTIFIER INPUTFAULT BRACEBYPASS

Installation Drawings19Figure 10 Input/output terminal detail, 400kVA Liebert NXL UPSNOTES:1. ALL DIMENSIONS ARE IN inches (mm).2. 24" MINIMUM CL

Installation Drawings20Figure 11 Main components, 400kVA Liebert NXL UPSHMI SCREENMAIN INPUTCIRCUIT BREAKER (CB1)BACKFEEDBREAKER (BFB)EMO BUTTONOPTION

Installation Drawings21Figure 12 Outline drawing, 400kVA Liebert NXL UPS3.7(95)10.6( 269)12.4(316)12.4( 316)10.6( 269)3.1(80)TYP32.9(835)39.4( 1000)14

Installation Drawings22Figure 13 Ground strap location for connected cabinetsREFERENCE OFCORNER-POST OFCONNECTED CABINETSCabinet-to-CabinetBolting In

Specifications235.0 SPECIFICATIONSTable 6 Liebert NXL UPS specifications 250 300 400 Input ParametersInput Voltage to Rectifier, VAC 480V 3-phase,

Specifications24 Physical Parameters and Standards, in (mm) Width, With Side Panels 71.8 (1823) 78.5 (1993) 78.5 (1993) Depth 33.5 (850) 33.5 (850) 39

Specifications25Notes on Tables1. Nominal input current (considered continuous) is based on full-rated output load. Maximum current includes nominal i

iTABLE OF CONTENTSCONTACTING LIEBERT FOR SUPPORT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . INSIDE FRONT COVERIMPORTANT SAFETY INSTR

Specifications26Table 12 Recommended conduit and cable sizesRectifier InputUPS RatingVoltage(VAC)Nominal Selection Alternate SelectionTop Cable Entry

Specifications27Table 13 Recommended lug sizesCable SizeT&B Series 54000One HoleT&B Series 54000Two Hole#8 AWG 54930BE 54850BE#6 AWG 54905BE 2

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iiFIGURESFigure 1 Cabinet arrangement—Liebert NXL, battery cabinets, maintenance bypass cabinet . . . . . . . . . . 5Figure 2 External Interface Boar

1IMPORTANT SAFETY INSTRUCTIONSSAVE THESE INSTRUCTIONSThis manual contains important instructions that should be followed during installation of your L

2NOTICEThis unit complies with the limits for a Class A digital device, pursuant to Part 15 Subpart J of the FCC rules. These limits provide reasonabl

Single-Module Mechanical Installation31.0 SINGLE-MODULE MECHANICAL INSTALLATION1.1 IntroductionThis following section describes the requirements that

Single-Module Mechanical Installation41.3.2 StorageShould the equipment not be installed immediately, it must be stored in a room for protection again

Single-Module Mechanical Installation51.6 Cable EntryCables can enter the UPS cabinet from bottom or top into the Input/Output (I/O) section of the un