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AC Power
For Business-Critical Continuity™
® ™
Liebert NXL
Installation Manual – 250-400kVA, 60Hz, Three Phase Single-Module
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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 CONTACTING LIEBERT FOR SUPPORT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . INSIDE FRONT COVER IMPORTANT SAFETY INSTRUCTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1 1.0 SINGLE-MODULE MECHANICAL INSTALLATION. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3 1.1 Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
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FIGURES Figure 1 Cabinet arrangement—Liebert NXL, battery cabinets, maintenance bypass cabinet . . . . . . . . . . 5 Figure 2 External Interface Board connections layout . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 Figure 3 Main components location, 250kVA Liebert NXL UPS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 Figure 4 Outline drawing, 250kVA Liebert NXL UPS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
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IMPORTANT SAFETY INSTRUCTIONS 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 UPS. Retain this manual for use by installing per- sonnel. WARNING ! Risk of electrical shock. Can cause personal injury or death. This UPS has several circuits that are energized with high DC as well as
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NOTE Emerson Network Power neither recommends nor knowingly sells this product for use with life support or other FDA-designated “critical” devices. 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 installed and used in accordance with this instructi
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Single-Module Mechanical Installation 1.0 SINGLE-MODULE 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 uninterruptible power supply and related equipment. 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. W
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Single-Module Mechanical Installation 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 handle lifting from the base. Access to the power terminals, auxiliary terminals blocks and power switches is from the front. The door can be opened to give access to the power connections bars, auxiliary te
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Single-Module Mechanical Installation 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 Liebert NXL UPS Note: If a maintenance bypass Liebert Maintenance cabinet is used, it must be Bypass NXL installed on the right side of Cabinet the Liebert NXL UPS UPS Liebert Additional Maintenance Ba
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UPS Electrical Installation 2.0 UPS 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. The UPS contains high DC as well as AC voltages. Check for voltage with both AC and DC voltmeters before working within the UPS. Only properly trained and qualified personnel wearing appropriate safety headgear, gloves, s
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UPS Electrical Installation The following are guidelines only and 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 Table 6. • The grounding conductor should be sized according to the fault rating, cable lengths, type of pro- tection, etc. The g
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UPS Electrical Installation 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 9). This is to prevent the cables from contacting other busbars. The recommended conduit layout is shown in Figure 7. NOTE For a Single Input configuration, linking busbars must be installed between t
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UPS Electrical Installation 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. NOTE All auxiliary cables must be segregated from power circuits (for shielding), must be double- 2 insulated and should be 12-24AWG (2.5-0.2mm ) stranded for maximum runs between 82-164 ft. (25 and 50m) respectively. NOTE If connection to more than one module is required, use a separate con
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UPS Electrical Installation Switch Auxiliary Inputs Dry Contacts Table 3 Circuit breaker or switch auxiliary contact Inputs Terminal Connects to Description Item Block Pin (description of external item) of interface CB or Switch aux. contact, 1 Input, protected closed = CB or switch is closed Rectifier Input Breaker +24V, 10mA, TB0810 2 CB or Switch aux. contact, common (RIB), Form C current limited CB or Switch aux. contact, 3 Input, protected closed = CB or switch is open CB or Switch aux. co
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Optional Equipment 3.0 OPTIONAL EQUIPMENT 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 The optional external battery temperature sensor kit, supplied separately from the battery circuit breaker, contains one probe and one temperature transport board. 3.1.3 Matching Liebert NXL Battery Cabin
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Installation Drawings 4.0 INSTALLATION DRAWINGS Figure 3 Main components location, 250kVA Liebert NXL UPS EMO Button HMI Screen (optional) Liebert ® Intellislot Bays Customer Interface Board Main Input Module Output Circuit Breaker (CB1) Circuit Breaker (CB2) Backfeed Breaker (BFB) Option Box (6 slots available) Input/Output Connections (Behind Inner Door) CB Interface Boards 12
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Installation Drawings Figure 4 Outline drawing, 250kVA Liebert NXL UPS 33.5" (850mm) 71.8" (1823mm) 76.8" (1950mm) CG 34.8" (884mm) 17.6" (448mm) 26.1 (664mm) 4.7 (120) (typ.) 4.5 8.5 8.5 8.5 8.3 (115) (216) (216) (216) 56.8" (210) (1443mm) B 27" (685mm) Top View (Doors Open) 9.8" 9.8" 9.8" 9.8" 12.1" 12.8" (250) (250) (250) (250) A (308mm) (324mm) 3.1" (80) (typ) NOTES: 1. All dimensions are in inches (mm). 2. 24" minimum clearance above unit required 22.6" for air exhaust. (575) 3. Keep ca
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Installation Drawings Figure 5 Main components location, 300kVA Liebert NXL UPS EMO Button Liebert (optional) HMI Screen ® Intellislot Bays Customer Interface Board Main Input Module Output Circuit Circuit Breaker (CB2) Breaker (CB1) Backfeed Breaker (BFB) Option Box (6 slots available) Input/Output Cabinet CB Interface Boards Doors and Inner Skins Removed 14
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Installation Drawings Figure 6 Outline drawing, 300kVA Liebert NXL UPS 15
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Installation Drawings Figure 7 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) 59.4 B (1509) 56.4 (1432) 52.
