Emerson 250 - Manuals

1 I MPORTANT S AFETY I NSTRUCTIONS SAVE THESE INSTRUCTIONS This manual contains important instructions that should be followed during installation of your Liebert NXL ™ UPS.Read this manual thoroughly, paying special attention to the sections that apply to your installation, before working with the ...

2 NOTICE This unit complies with the limits for a Class A digital device, pursuant to Part 15 Subpart J of the FCC rules. These limits provide reasonable protection against harmful interference in a commercial environment. This unit generates, uses and radiates radio frequency energy and, if not ins...

Single-Module Mechanical Installation 3 1.0 S INGLE -M ODULE M ECHANICAL I NSTALLATION 1.1 Introduction This following section describes the requirements that must be taken into account when planning the positioning and cabling of the Liebert NXL uninterruptible power supply and related equipment.Th...

Single-Module Mechanical Installation 4 1.3.2 Storage Should the equipment not be installed immediately, it must be stored in a room for protection against excessive humidity and or heat sources (see Environmental Parameters in Table 6 ). 1.4 Positioning The cabinet is structurally designed to handl...

Single-Module Mechanical Installation 5 1.6 Cable Entry Cables can enter the UPS cabinet from bottom or top into the Input/Output (I/O) section of the unit, see the figures in 4.0 - Installation Drawings . Figure 1 Cabinet arrangement—Liebert NXL, battery cabinets, maintenance bypass cabinet Note: I...

UPS Electrical Installation 6 2.0 UPS E LECTRICAL I NSTALLATION This chapter provides guidelines for qualified installers who must have knowledge of local wiring practices pertaining to the equipment to be installed. 2.1 External Protective Devices For safety, it is necessary to install circuit brea...

UPS Electrical Installation 8 Bottom Cable Entry When making the power connections for bottom cable entry, the recommended order of pull- ing and installing cables is to start from the bottom connections to the top connections. The cables must be routed around the fault braces (see Detail in Figure ...

UPS Electrical Installation 9 2.3.1 Dry Contacts Volt-free and isolated contacts are used for interfacing to customer connections external to the NXL unit. These circuits use at least 8mA of current at +24V. EPO Input Dry Contact Control Status Inputs Dry Contact The following inputs can sense eithe...

UPS Electrical Installation 10 Switch Auxiliary Inputs Dry Contacts Control Status Output Dry Contacts Status signals are outputs through volt-free, normally open and normally closed contacts. 2.3.2 Load Bus Synch Connection Table 3 Circuit breaker or switch auxiliary contact Inputs Item Terminal Bl...

Optional Equipment 11 3.0 O PTIONAL E QUIPMENT 3.1 Single-Module System Options 3.1.1 Matching Maintenance Bypass Cabinet A matching Liebert NXL Maintenance Bypass cabinet is available. See Maintenance Bypass Cabinet Installation Manual (SL-24532) for more details. 3.1.2 Battery Temperature Sensor T...

Installation Drawings 12 4.0 I NSTALLATION D RAWINGS Figure 3 Main components location, 250kVA Liebert NXL UPS HMI Screen EMO Button(optional) LiebertIntellislotBays ® CustomerInterfaceBoard Main InputCircuitBreaker (CB1) Module OutputCircuit Breaker (CB2) Backfeed Breaker (BFB) Option Box(6 slots a...

Installation Drawings 13 Figure 4 Outline drawing, 250kVA Liebert NXL UPS 71.8" (1823mm) 34.8" (884mm) 33.5" (850mm) 76.8" (1950mm) 17.6" (448mm) 56.8" (1443mm) 8.5 (216) 8.5 (216) 26.1 (664mm) 27" (685mm) 9.8" (250) 9.8" (250) 9.8" (250) 9.8" (250) 3.1...

Installation Drawings 14 Figure 5 Main components location, 300kVA Liebert NXL UPS HMI Screen EMO Button(optional) LiebertIntellislotBays ® CustomerInterfaceBoard Main InputCircuitBreaker (CB1) Module OutputCircuit Breaker (CB2) Backfeed Breaker(BFB) Option Box(6 slots available) Input/OutputCabinet...

Installation Drawings 15 Figure 6 Outline drawing, 300kVA Liebert NXL UPS

Installation Drawings 16 Figure 7 Input/output conduit detail drawing, 250-300kVA Liebert NXL UPS OUTPUT NEUTRAL INNER PANEL REMOVED FOR CLARITY SHOWN IN EXTENDED POSITION DC (2) 3" CONDUIT NOTES:1. ALL DIMENSIONS ARE IN inches (mm).2. 24" MINIMUM CLEARANCE ABOVE UNIT REQUIRED FOR AIR EXHAUS...

Installation Drawings 17 Figure 8 Top cable entry routing and installation order The cables must be routedaround the fault braces. This isto prevent the cables fromcoming in contact withother busbars. FAULT BRACE OUTPUT FAULT BRACE RECTIFIER INPUT FAULT BRACE BYPASS INPUT BYPASS NEUTRAL DC (POSITIVE...

Installation Drawings 19 Figure 10 Input/output terminal detail, 400kVA Liebert NXL UPS NOTES:1. ALL DIMENSIONS ARE IN inches (mm).2. 24" MINIMUM CLEARANCE ABOVE UNIT REQUIRED FOR AIR EXHAUST.3. KEEP CABINET WITHIN 15 DEGREES OF VE RTICAL.4. TOP AND BOTTOM CABLE ENTRY AVAILABLE THROUGH REMO VABL...

Installation Drawings 20 Figure 11 Main components, 400kVA Liebert NXL UPS HMI SCREEN MAIN INPUT CIRCUIT BREAKER (CB1) BACKFEED BREAKER (BFB) EMO BUTTON OPTIONAL EXTERNAL INTERFACE BOARD (EIB) MODULE OUTPUT CIRCUIT BREAKER (CB2) OPTION BOX (6 SLOTS) FRONT DOORS REMOVED DOORS AND INNER SKINS REMOVED

Installation Drawings 21 Figure 12 Outline drawing, 400kVA Liebert NXL UPS 3.7 (95) 10.6 ( 269) 12.4 ( 316 ) 12.4 ( 316) 10.6 ( 269) 3.1 ( 80 ) TYP 32.9 ( 835) 39.4 ( 1000) 14.5 ( 368) 76.8 (1950) 29.5 ( 749) 25.8 (655) 78.5 ( 1995) FRONT ACCESS PLATE ACCESS PLATE CONDUIT LANDING AREA (NOTE 4) CONDU...

Installation Drawings 22 Figure 13 Ground strap location for connected cabinets REFERENCE OF CORNER-POST OF CONNECTED CABINETS Cabinet-to-Cabinet Bolting Instructions Typical Ground Strap Installation FRONT SIDE OF UNITS ( Use for all connected units except battery cabinet ) A Detail A

Specifications 23 5.0 S PECIFICATIONS Table 6 Liebert NXL UPS specifications 250 300 400 Input Parameters Input Voltage to Rectifier, VAC 480V 3-phase, 3-wire Input Voltage to Bypass, VAC 480V 3-phase, 3-wire or 4-wire Input Voltage Range, VAC +10% to -15 -15% to -20%* -20% to -30%** <-30%*** Inp...

Specifications 25 Notes on Tables 1. Nominal input current (considered continuous) is based on full-rated output load. Maximum current includes nominal input current and maximum battery recharge current (considered noncontinuous). Continuous and noncontinuous current are defined in nec 100. Maximum ...

Specifications 26 Table 12 Recommended conduit and cable sizes Rectifier Input UPS Rating Voltage (VAC) Nominal Selection Alternate Selection Top Cable Entry Input Wire & Conduit Ph, G THW / FMC Bottom Cable Entry Input Wire & Conduit Ph, G THW / RNC Top Cable Entry Input Wire & Conduit ...

Specifications 27 Table 13 Recommended lug sizes Cable Size T&B Series 54000 One Hole T&B Series 54000 Two Hole #8 AWG 54930BE 54850BE #6 AWG 54905BE 256-30695-868 #4 AWG 54906BE 256-30695-733 #2-3 AWG 54942BE 54811BE #1 AWG 54947BE 54857BE #1/0 AWG 54950BE 256-30695-593 #2/0 AWG 54951BE 548...

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