Page 2 - Product Warranty Registration; To register for warranty protection, visit the; Service and Support; section of our Web site at:; Product Registration; and fill out the form.
C ONTACTING L IEBERT FOR S UPPORT To contact Emerson Network Power 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 co...
Page 3 - TABLE OF CONTENTS
i TABLE OF CONTENTS I MPORTANT S AFETY I NSTRUCTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 1.0 S INGLE -M ODULE M ECHANICAL I NSTALLATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 1.1 Introduction . . . . . . ....
Page 4 - ii; FIGURES
ii FIGURES Figure 1 Cabinet arrangement—Liebert NXL UPS, battery cabinets, maintenance bypass cabinet. . . . . . 4 Figure 2 Two-Breaker Maintenance Bypass Cabinet, one-input, attached . . . . . . . . . . . . . . . . . . . . . . . . . . 7 Figure 3 Two-Breaker Maintenance Bypass Cabinet, two-input, at...
Page 5 - SAVE THESE INSTRUCTIONS; Liebert NXL; and determine unit weight before handling each; WARNING; NOTE; support or other FDA-designated “critical” devices.
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 ™ Maintenance Bypass Cabinet. Read this manual thoroughly before working with the maintenance bypass cabinet. Retain this man- ual fo...
Page 6 - Single-Module Mechanical Installation; INGLE; Introduction; NOTICE; included as part of building installation.; Preliminary Checks; damage to the shipper immediately.; Environmental Considerations; specified operating range (see; combustible surface only.
Single-Module Mechanical Installation 2 1.0 S INGLE -M ODULE M ECHANICAL I NSTALLATION 1.1 Introduction This section describes the requirements that must be taken into account when planning the position- ing and cabling of the Liebert NXL Maintenance Bypass Cabinet.This chapter is a guide to general...
Page 7 - Positioning; Table 6; Cable Entry; CAUTION
Single-Module Mechanical Installation 3 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 Table 6 ). 1.4 Positioning The cabinet is structurally designed to handle lifting from the base.Acce...
Page 8 - Power Cables; and; linear loads. Refer to; Tables 7; and; prevent their inadvertent operation.
Single-Module Mechanical Installation 4 1.6 Power Cables The Maintenance Bypass Cabinet requires both power and control cabling once it has been mechani- cally installed. All control cables must be separate from the power cables. Run control cables in metal conduits or metal ducts that are electrica...
Page 9 - lation Drawings; . These are accessible when the power compartment door is opened.; Equipment Ground; shown in; personnel, or the risk of fire, should an ground fault occur.
Single-Module Mechanical Installation 5 1.6.1 Power Cable Connection Procedure The system input, UPS bypass, UPS output and system output cables (all require lug type termina- tions) are connected to busbars situated behind the power isolator switches as shown in 2.0 - Instal- lation Drawings . Thes...
Page 10 - warning signs to prevent their inadvertent operation.; national codes of practice.
Single-Module Mechanical Installation 6 Once the equipment has been finally positioned and secured, connect the power cables as described in the following procedure.Refer to the appropriate cable connection drawing in 2.0 - Installation Drawings . 1. Verify that the bypass equipment is isolated from...
Page 11 - Installation Drawings; NSTALLATION; Figure 2
Installation Drawings 7 2.0 I NSTALLATION D RAWINGS Figure 2 Two-Breaker Maintenance Bypass Cabinet, one-input, attached Battery System Critical Load BFB CB2 CB1 MBD MBB MI B FBO UPS Module Two Breaker Maintenance Bypass Cabinet Main Input Switchgear Load Bank (FBO) N EG MBJ DC Bus I MIB - Maintenan...
Page 12 - Figure 3
Installation Drawings 8 Figure 3 Two-Breaker Maintenance Bypass Cabinet, two-input, attached Figure 4 Two-Breaker Maintenance Bypass Cabinet, three-input, attached or detached Battery System DC Bus Critical Load BFB CB2 CB1 MBD MBB MI B FBO FBO UPS Module Two Breaker Maintenance Bypass Cabinet Main ...
Page 13 - Figure 5; FRONT
Installation Drawings 9 Figure 5 Liebert NXL Maintenance Bypass Cabinet—250 and 300kVA main component location MAINTENANCE ISOLATION BREAKER (MIB) MAINTENANCE BYPASS BREAKER (MBB) CONTROL WIRING TERMINAL BLOCK (TB1) OPTIONAL SOLENOID INTERLOCK GROUND INPUT PHASE B NEUTRAL OUTPUT PHASE B INPUT PHASE ...
Page 14 - Figure 6
Installation Drawings 10 Figure 6 Liebert NXL Maintenance Bypass Cabinet—400kVA main component location BREAKER REMOVED FOR CLARITY B MAINTENANCE BYPASS BREAKER (MBB) MAINTENANCE ISOLATION BREAKER (MIB) CONTROL WIRING TERMINAL BLOCK (TB1) OPTIONAL SOLENOID INTERLOCK GROUND INPUT PHASE B NEUTRAL OUTP...
Page 15 - Figure 7; BOTTOM CONDUIT PLATES
Installation Drawings 11 Figure 7 Liebert NXL Maintenance Bypass Cabinet—250 and 300kVA outline drawing 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 vertical while handling.4. Top and bottom cable ent...
Page 16 - Figure 8
Installation Drawings 12 Figure 8 Liebert NXL Maintenance Bypass Cabinet—400kVA outline drawing See Note 10 See Note 11 CG CG Knock-out for controlwiring O 1.0" (25.4mm)3 Places ConduitLandingArea ConduitLandingArea 24.2 ( 615) 39.4 (1000) 76.8 (1950) 38.5 (979) 12.2 (309 ) 28.2 ( 716 ) 38.5 ( 9...
Page 17 - FRONT VIEW
Installation Drawings 13 Figure 9 Liebert NXL Maintenance Bypass Cabinet—250 and 300kVA terminal details BREAKER REMOVED FOR CLARITY NOTE:ALL DIMENSIONS ARE IN inches (mm). CUSTOMER CONNECTION O .6 (14 ) 8 PLACES TYP 1.6 ( 40 ) 2.0 ( 51 ) 2.6 ( 65 ) 1.8 ( 45 ) 2.0 ( 51 ) 2.6 ( 65 ) 1.8 ( 44 ) 1.8 (4...
Page 18 - BREAKERS REMOVED FOR CLARITY
Installation Drawings 14 Figure 10 Liebert NXL Maintenance Bypass Cabinet—400Kva terminal details BREAKERS REMOVED FOR CLARITY NOTE:ALL DIMENSIONS ARE IN inches (mm). (BOTTOM ENTRY) (TOPENTRY) CUSTOMER CONNECTION AREA O .56 (14) TYPICAL (24 PLACES) 1.37 X .56 SLOT TYPICAL (20 PLACES) O .56 (14) 8 PL...
Page 19 - Figure 11 Cable routing
Installation Drawings 15 Figure 11 Cable routing TOP ENTRY NOTES:1. Cables from lower busbars must be routed and tied to the aligning holes on the the cable landing bar directly above (see figure below). Installation method is to prevent cables from lower busbars from contacting the upper busbars.2....
Page 20 - REA
Installation Drawings 16 Figure 12 Liebert NXL Maintenance Bypass Cabinet, one-input system, point-to-point wiring to UPS N O P E B A T C R Q S H G K J I P O N D L M U REA R MIB MBB BYPASS NEUTRAL (-) (+) C B A F C B A C B A L OUTPUTNEUTRAL M V V H F G I J K FRONT UPS
Page 21 - Table 1; Run
Installation Drawings 17 Table 1 Liebert-supplied interconnect wiring for one-input Liebert NXL Maintenance Bypass Cabinet Run To From Conductor A Utility AC - Phase A MBC Bypass AC - Phase A Maintenance Bypass AC - Phase A B Utility AC - Phase B MBC Bypass AC - Phase B Maintenance Bypass AC - Phase...
Page 23 - Table 2
Installation Drawings 19 Table 2 Liebert-supplied interconnect wiring for two-input Liebert NXL Maintenance Bypass Cabinet Run To From Conductor A Utility AC - Phase A MBC Bypass AC - Phase A Maintenance Bypass AC - Phase A B Utility AC - Phase B MBC Bypass AC - Phase B Maintenance Bypass AC - Phase...
Page 25 - Table 3
Installation Drawings 21 Table 3 Liebert-supplied interconnect wiring for three-input Liebert NXL Maintenance Bypass Cabinet Run To From Conductor A Utility AC - Phase A MBC Bypass AC - Phase A Maintenance Bypass AC - Phase A B Utility AC - Phase B MBC Bypass AC - Phase B Maintenance Bypass AC - Pha...
Page 26 - WIRE DIAGRAM WITHOUT INTERLOCK; Table 4; From
Installation Drawings 22 Figure 15 Liebert NXL Maintenance Bypass Cabinet Control wire diagram without interlock WIRE DIAGRAM WITHOUT INTERLOCK LOW VOLTAGE TERMINAL STRIP - TB1 - 21 20 19 18 17 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 EPO PB SW TB1-1 TB1-2 TB1-4 TB1-5 TB1-6 TB1-7 TB1-8 TB1-9 TB1-10 TB...
Page 27 - WIRE DIAGRAM WITH INTERLOCK; Table 5
Installation Drawings 23 Figure 16 Liebert NXL Maintenance Bypass Cabinet control wire diagram with interlock WIRE DIAGRAM WITH INTERLOCK LOW VOLTAGE TERMINAL STRIP - TB1 - 21 20 19 18 17 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 EPO PB SW TB1-1 TB1-2 TB1-4 TB1-5 TB1-6 TB1-7 TB1-8 TB1-9 TB1-10 TB1-11 T...
Page 29 - Figure 18 Ground strap location for connected cabinets; Typical Ground Strap Installation; DETAIL A
Installation Drawings 25 Figure 18 Ground strap location for connected cabinets Reference of corner postof connected cabinets Cabinet-to-CabinetBolting Instructions Typical Ground Strap Installation FRONT SIDE OF UNITS (Use for all connected units except Battery Cabinet) A DETAIL A
Page 30 - Specifications; PECIFICATIONS; Model Size
Specifications 26 3.0 S PECIFICATIONS Table 6 Liebert NXL Maintenance Bypass Cabinet specifications Model Size 250 300 400 Input Parameters Input Voltage to Bypass, VAC 480V 3-phase, 3-wire or 4-wire Permissible Input Voltage Range, VAC +10% to -30% Input Frequency, Hz 60 Permissible Input Frequency...
Page 32 - Recommended conduit and cable sizes—Module Bypass Input
Specifications 28 Table 11 Recommended conduit and cable sizes—Module Bypass Input UPS Rating System Input Voltage (VAC) Module Bypass Input Nominal Selection Alternate Selection kVA kW Rectifier Bypass Maint Byp Output Top Cable Entry Wire & Conduit Ph, N, G,THW / FMC Bottom Cable Entry Wire &a...
Page 33 - Notes; put sizes. The manual is available at the Liebert Web site:; Recommended lug sizes; Cable Size
Specifications 29 Notes See the Liebert NXL UPS installation manual, SL-25420, for UPS rectifier, UPS bypass and UPS out- put sizes. The manual is available at the Liebert Web site: www.liebert.com These are guidelines only and are superseded by local regulations and codes of practice where appli- c...
Page 36 - AC Power
EmersonNetworkPower.com Ensuring The High AvailabilityOf Mission-Critical Data And Applications. Emerson Network Power, the global leader in enabling business-criticalcontinuity, ensures network resiliency and adaptability througha family of technologies—including Liebert power and coolingtechnologi...
