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AC Power
For Business-Critical Continuity™
® ™
Liebert NXL Ship-Ahead Input/Output Cabinet
Installation Manual – 250-400kVA, 60Hz
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CONTACTING LIEBERT FOR SUPPORT To contact Liebert Services for information or repair service in the United States, call 1-800-LIEBERT (1-800-543-2378). Liebert Services offers a complete range of start-up services, repair services, preventive maintenance plans and service contracts. For repair or maintenance service outside the 48 contiguous United States, contact Liebert Services, if available in your area. For areas not covered by Emerson Network Power Liebert Services, the authorized dist
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TABLE OF CONTENTS 1.0 MECHANICAL INSTALLATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2 1.1 Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 1.2 Preliminary Checks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 1.3 Environmental Considerations . . . . . . . . . . . . . . . . . .
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IMPORTANT SAFETY INSTRUCTIONS SAVE THESE INSTRUCTIONS This manual contains important instructions that should be followed during installation of your Lie- ™ bert NXL Input/Output Cabinet. Read this manual thoroughly, paying special attention to the sec- tions that apply to your installation, before working with the UPS. Retain this manual for use by installing personnel. WARNING ! Risk of electrical shock. Can cause personal injury or death. Check for voltage with both AC and DC voltmeters befo
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Mechanical Installation 1.0 MECHANICAL INSTALLATION 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 Input/Output Cabinet. This chapter is a guide to general procedures and practices that should be observed by the installing personnel. The particular conditions of each site will determine the applicability of such procedures. NOTICE All equipment not referred to in this manual is ship
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Mechanical Installation 1.4.1 Moving the Cabinets The Liebert NXL Input/Output Cabinet can be handled with a forklift or similar equipment. When moving the unit by forklift, care must be taken to protect the panels. Do not exceed a 15-degree tilt with the forklift. Bottom structure will support the unit only if the forks are completely beneath the unit. Handling the cabinet with straps is not authorized. 1.4.2 Clearances Clearance around the front of the equipment should be sufficient to enabl
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Electrical Installation 2.0 ELECTRICAL INSTALLATION This chapter provides guidelines for qualified installers who must have knowledge of local wiring practices pertaining to the equipment to be installed. WARNING ! Risk of electrical shock. Can cause injury or death. Check for voltage with both AC and DC voltmeters before working within the cabinet. Only properly trained and qualified personnel wearing appropriate safety headgear, gloves, shoes and glasses should be involved in installing the
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Electrical Installation The following are guidelines only and are superseded by local regulations and codes of practice where applicable: • Take special care when determining the size of the neutral cable (grounded conductor), because current circulating on the neutral cable may be greater than nominal current in the case of non- linear loads. Refer to the values in Tables 2 and 3. • The grounding conductor should be sized according to the fault rating, cable lengths, type of pro- tection, etc
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Electrical Installation Top Cable Entry When making the power connections, the recommended order of pulling and installing cables is to start from the top connections to the bottom connections. The cables must be routed around the fault braces (see Detail in Figure 3). This is to prevent the cables from contacting other busbars. The recommended conduit layout is shown in Figure 1. Bottom Cable Entry When making the power connections, the recommended order of pulling and installing cables is
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Electrical Installation Table 4 Current ratings—battery UPS Rating Maximum Battery External Breaker kVA kW Nominal VDC Current at EOD Trip, Amps 250 225 480 615 700 300 270 480 737 800 400 360 480 981 1000 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 input cur
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Electrical Installation Table 6 Recommended lug sizes T&B Series 54000 T&B Series 54000 Cable Size One Hole 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 54862BE #3/0 AWG 54965BE 54864BE #4/0 AWG 54970BE 54866BE 250kcmil 54913BE 54868BE 300kcmil 54914BE 54870BE 350kcmil 54915BE 54872BE 400kcmil 54916BE 54874BE 500kcmil 54918BE 54876BE 600kcmil 54920BE 54878B
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Installation Drawings 3.0 INSTALLATION DRAWINGS Figure 1 Input/output conduit detail drawing, 250-300kVA Liebert NXL UPS DC OUTPUT (2) 3" CONDUIT (2) 3.5" CONDUIT BYPASS INPUT (2) 3.5" CONDUIT (2) 3" CONDUIT INPUT BYPASS (2) 3" CONDUIT (2) 3.5" CONDUIT OUTPUT DC (2) 3.5" CONDUIT (2) 3" CONDUIT LOW VOLTAGE LOW VOLTAGE 1.5" CONDUIT LOW VOLTAGE 1.5" CONDUIT (14) 1" CONDUIT TOP VIEW BOTTOM VIEW SHOWN IN EXTENDED POSITION 76.8 ( 1950 ) BYPASS NEUTRAL DC POSITIVE GROUND BUS DC NEGATIVE (TOP ENTRY) 59.
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Installation Drawings Figure 2 Input/output conduit detail drawing, 400kVA Liebert NXL UPS DC OUTPUT (2) 3" CONDUIT (2) 3.5" CONDUIT BYPASS INPUT (2) 3.5" CONDUIT (2) 3" CONDUIT INPUT BYPASS (2) 3" CONDUIT (2) 3.5" CONDUIT OUTPUT DC (2) 3.5" CONDUIT (2) 3" CONDUIT LOW VOLTAGE 1.5" CONDUIT LOW VOLTAGE LOW VOLTAGE (14) 1" CONDUIT 1.5" CONDUIT TOP VIEW BOTTOM VIEW 76.8 (1950) BYPASS NEUTRAL DC POSITIVE DC NEGATIVE GROUND BUS 59.4 LOCATION ( 1509) B 56.4 (TOP ENTRY) (1432) 52.9 SEE NOTE 6 (1343) 49.
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Installation Drawings Figure 3 Top cable entry routing and installation order OUTPUT CONDUIT INPUT CONDUIT BYPASS CONDUIT DC CONDUIT DC (POSITIVE) DC (POSITIVE) DC (NEGATIVE) DC (NEGATIVE) GROUND (TOP ENTRY) BYPASS NEUTRAL BYPASS NEUTRAL BYPASS INPUT (PHASE C) FAULT BRACE FAULT BRACE BYPASS INPUT BYPASS INPUT BYPASS INPUT RECTIFIER INPUT (PHASE C) FAULT BRACE FAULT BRACE RECTIFIER INPUT RECTIFIER INPUT RECTIFIER INPUT OUTPUT (PHASE C) FAULT BRACE FAULT BRACE OUTPUT OUTPUT OUTPUT GROUND (BOTTOM E
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Installation Drawings Figure 4 Bottom cable entry routing and installation order DC (POSITIVE) DC (NEGATIVE) DC (POSITIVE) GROUND (TOP ENTRY) DC (NEGATIVE) BYPASS NEUTRAL BYPASS NEUTRAL FAULT BRACE BYPASS INPUT FAULT BRACE BYPASS INPUT (PHASE C) BYPASS INPUT BYPASS INPUT FAULT BRACE RECTIFIER INPUT FAULT BRACE RECTIFIER INPUT (PHASE C) RECTIFIER INPUT RECTIFIER INPUT FAULT BRACE OUTPUT (PHASE C) OUTPUT FAULT BRACE OUTPUT OUTPUT GROUND (BOTTOM ENTRY) OUTPUT NEUTRAL OUTPUT NEUTRAL OUTPUT CONDUIT I
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Installation Drawings Figure 5 Floor mount brackets—standard and optional layout 20.7 (525mm) 27.4" 27.4" (695mm) (695mm) BOTTOM VIEW (Standard) 7.7" (197mm) 4.7" DETAIL AREA (120mm) FLOOR MOUNTS 36.8" 27.4" (935mm) (695mm) KEEP BRACKETSATTACHED WARNING Brackets MUST remain attached to the frame until the unit is being placed in its final installed position. (The final installation will always require the unit to be bolted BOTTOM VIEW (Optional) to another Liebert NXL product.) Failure to compl
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Installation Drawings 14
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Ensuring The High Availability 0f Mission-Critical Data And Applications. Technical Support / Service Emerson Network Power, the global leader in enabling business-critical Web Site continuity, ensures network resiliency and adaptability through www.liebert.com a family of technologies—including Liebert power and cooling Monitoring technologies—that protect and support business-critical systems. 800-222-5877 Liebert solutions employ an adaptive architecture that responds monitoring@emersonnetwor
