Vertiv Liebert NXL Installation Manual
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Vertiv Liebert NXL Installation Manual

Vertiv Liebert NXL Installation Manual

250-400kva, 60hz, three-phase, single-module and multi-module units
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Liebert®
NXL™ UPS
Installation Manual — 250-400kVA, 60Hz, Three-Phase, Single-Module and
Multi-Module Units

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Summary of Contents for Vertiv Liebert NXL

  • Page 1 Liebert® NXL™ UPS Installation Manual — 250-400kVA, 60Hz, Three-Phase, Single-Module and Multi-Module Units...
  • Page 2 The products covered by this instruction manual are manufactured and/or sold by Vertiv This document is the property of Vertiv and contains confidential and proprietary information owned by Vertiv. Any copying, use or disclosure of it without the written permission of Vertiv is strictly prohibited.

  • Page 3: Table Of Contents

    Sizing the Input Breaker Feeding a Liebert NXL UPS....... . .
  • Page 4 Figure 19 Outline drawing, 400kVA, 575V/600V Liebert NXL ....... . .28...
  • Page 5 Table 10 Liebert NXL UPS specifications ........

  • Page 7: Important Safety 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 personnel.
  • Page 8 Operation of this unit in a residential area may cause harmful interference that the user must correct at his own expense. Vertiv | Liebert NXL 250-400 Installation Manual...

  • Page 9: Single-Module And Multi-Module Mechanical Installation

    NOTICE Three-phase input supply required. The standard Liebert NXL UPS is suitable for connection to three-phase, four-wire (+ Earth) TN-C, TN-S, IT-G, IT-IG or, three-phase, three-wire plus ground, IT-UG. If using with IT Power system, a 4-pole disconnect device must be included as part of building installation.

  • Page 10: Environmental Considerations

    (see Environmental Parameters in Table 10). The Liebert NXL UPS is cooled with the aid of internal fans. To permit air to enter and exit and prevent overheating or malfunctioning, do not cover the ventilation openings.

  • Page 11: Moving The Cabinets

    1.4.2 Clearances The Liebert NXL has no ventilation grilles at either side or at the rear of the UPS. Clearance around the front of the equipment should be sufficient to enable free passage of personnel with the doors fully opened.

  • Page 12: Special Considerations For 1+N Parallel Systems

    When bringing the 1+N system online for the first time or after removing one unit, Vertiv recommends checking the bypass current mismatch. To check the bypass current mismatch: Place a load on the bypass of each UPS module.

  • Page 13: Figure 1 Cabinet Arrangement-Liebert Nxl Single-Module, Battery Cabinets, Maintenance Bypass

    Single-Module and Multi-Module Mechanical Installation Figure 1 Cabinet arrangement—Liebert NXL single-module, battery cabinets, maintenance bypass cabinet Applicable to: Liebert 250 - 400 kVA 480V, 250 - 300 kVA 575/600V except without Maintenance Bypass Cabinet The side panels and Note: If a maintenance bypass...

  • Page 14: Ups Electrical Installation

    Given that every installation has its own characteristics, this section provides guidelines for qualified installation personnel with knowledge of operating practices, regulatory standards and the equipment to be installed. External overcurrent protection must be provided. See Table 10 - Liebert NXL UPS specifications for overload capacity. Dual Input When wiring the UPS with a separate rectifier and bypass input, each input must be protected separately.

  • Page 15: Sizing The Input Breaker Feeding A Liebert Nxl Ups

    • AC and DC cables must be run in conduits according to local codes, national codes and standard best practices. This will prevent creation of excess EMI fields. 2.2.1 Sizing the Input Breaker Feeding a Liebert NXL UPS The rectifier nominal input current value (Table 11) is based on providing enough power to operate the inverter at full rated load when the input voltage is nominal.
  • Page 16 For control connection details, see 2.3 - Control Cable and Communication. NOTE If fault bracing brackets were removed during installation, they MUST be replaced. 6. Close and secure the interior and exterior doors. Vertiv | Liebert NXL 250-400 Installation Manual...

  • Page 17: Figure 3 Cabinet Grounding Plates

    Kick plates must be installed. If the unit is to be installed in a position that does not permit access to rear kick plates, then kick plates must be installed before the unit is placed in its final position. Vertiv | Liebert NXL 250-400 Installation Manual...

  • Page 18: Control Cable And Communication

    TB1154A TB0813 TB0819 EXTERNA L INT BATT EXT BATT STATUS BYP CNTL TB0812 TB0825 TB0817 RECT REPO CNTL BATT MTR TB1156 LBS VO LTAGE TB0818 TB0820 TB0826 REPO TB0824 CNTRLN STATUS FORM C Vertiv | Liebert NXL 250-400 Installation Manual...

  • Page 19: Dry Contacts

    For 1+N systems with a maintenance Bypass, these Aux contacts must be run to each module from an isolated source. 2. For 1+N systems, these breaker Aux contact go to the UPS that it is associated with. Key Status Input can be either Form-C, N.O. or N.C. contact. Vertiv | Liebert NXL 250-400 Installation Manual...

  • Page 20: Multi-Module Communication

    Care must be taken to prevent the drain wire from touching any other component in the module. 8. Attach control wires to the side of the control door where the Inter-Module Board (IMC) is attached. Do not run wires across the IMC board. Vertiv | Liebert NXL 250-400 Installation Manual...

  • Page 21: Digital Lbs

    6. Attach the control wire to the side of the control door where the Inter-Module Board (IMC) is attached. Do not run wires across the IMC board. Figure 7 Inter-Module Communication Board wiring diagram—Digital LBS P3108 P3108 P3108 02-806730-xx 02-806730-xx 02-806730-xx P3109 P3109 P3109 UPS 3 UPS 1 UPS 2 Vertiv | Liebert NXL 250-400 Installation Manual...

  • Page 22: Configuring Neutral And Ground Connections

    Failure to set the ground fault interrupters properly could cause loss of power to the critical load. 2.5.3 Preferred Grounding Configuration, Battery Systems Open-rack battery systems, depending on local code requirements and customer preference, are normally: • Floating (ungrounded) • Center-tapped and floating Vertiv | Liebert NXL 250-400 Installation Manual...

  • Page 23: Multi-Module Systems

    For Multi-Module systems using a 3-wire bypass, the Neutral-Ground bond must be made at the common neutral connection point in the switchgear or parallel cabinet. 2.5.5 High Resistance Ground Systems The Liebert NXL is compatible with High Resistance Ground Systems. See your local Vertiv representative for details. ROUNDING...

  • Page 24: Figure 10 Grounding Diagram, Three-Wire Multi-Module System

    UPS Electrical Installation Figure 10 Grounding diagram, three-wire multi-module system Switchgear UPS #1 Source UPS #2 UPS #3 Grounding for 1+N systems is wired exactly the same. Vertiv | Liebert NXL 250-400 Installation Manual...

  • Page 25: Figure 11 Grounding Diagram, Four-Wire Multi-Module System

    UPS Electrical Installation Figure 11 Grounding diagram, four-wire multi-module system UPS #1 Switchgear BPSS Source UPS #2 BPSS UPS #3 BPSS Vertiv | Liebert NXL 250-400 Installation Manual...

  • Page 26: Optional Equipment

    3.1.3 Load Bus Synch An optional Load Bus Synch (LBS) system can be used to synchronize two Liebert NXL UPSs or an Liebert NXL UPS to a Liebert Series 610 UPS. 3.1.4 Remote Alarm Panel The remote alarm panel has LED alarm lights.

  • Page 27: Figure 12 Control Wiring, Programmable Relay Board

    4. Press up to four (4) events. Selected events will show up under Relay 1 Assignment. NOTE To deselect an event, click on the event. Repeat Steps 3 and 4 for each relay. 6. Press SAVE to keep the settings. Vertiv | Liebert NXL 250-400 Installation Manual...

  • Page 28: Input Contact Isolator Board

    • Delay, sec—0 to 99.9 (default: 0) 3.2.3 Input Contact Isolator Board The Input Contact Isolator Board (ICI) provides a Liebert NXL module interface for up to eight external user alarm or message inputs to be routed through the NXL’s alarm network. The eight contacts are normally open dry contacts.

  • Page 29: Figure 14 Input Contact Isolator Dialog Box

    Input Contact Isolator Board pre-assigned values Channel ICI #1 ICI #2 Number Pre-Assigned Label Pre-Assigned Label Reduced Rect ILimit Stop Battery Charge Reduced Batt ILimit Stop Battery Charge Stop Battery Charge Stop Battery Charge Vertiv | Liebert NXL 250-400 Installation Manual...

  • Page 30: Figure 15 Optional Input Contact Isolator Board

    All control wiring (by others) must be run separate from power wiring. Control wiring runs should not be combined in the same conduit. Signal voltage: 100mA @ 12VDC. Maximum cable length 500 ft. (152m) with #16AWG and flexible stranded cable. Vertiv | Liebert NXL 250-400 Installation Manual...

  • Page 31: Installation Drawings

    Installation Drawings 4.0 INSTALLATION DRAWINGS Figure 16 Outline drawing, 250kVA, 480V Liebert NXL 57.5" (1460mm) Cable Entry 64.2" Conduit Plte (1630mm) See Detail A TOP VIEW 15" (Doors Open) .9" (23mm) 2.2 (57mm) (380mm) Outside Outside Panel Panel 21.4" Power Cable 71.8"...

  • Page 32: Figure 17 Outline Drawing, 250Kva, 575/600V; And 300Kva, 480/575/600V Liebert Nxl

    Installation Drawings Figure 17 Outline drawing, 250kVA, 575/600V; and 300kVA, 480/575/600V Liebert NXL Cable Entry Conduit Plate 63.8" See Detail A (1620mm) TOP VIEW 2.2" (57mm) (Doors Open) Outside Panel 15" .9" (23mm) (380mm) Outside Panel 33.5" 78.5" (1994mm) (850mm) 21.4"...

  • Page 33: Figure 18 Outline Drawing, 400Kva, 480V Liebert Nxl

    Installation Drawings Figure 18 Outline drawing, 400kVA, 480V Liebert NXL 15.0" .9" (23mm) 2.2" (57mm) (380mm) Outside Panel Outside of Panel Power Cable 27.3" Conduit Plate Cable Entry 69.5" (693mm) (1766mm) Conduit Plate See Detail A Control Cable Top View (Doors Open) 6.9"...

  • Page 34: Figure 19 Outline Drawing, 400Kva, 575V/600V Liebert Nxl

    Installation Drawings Figure 19 Outline drawing, 400kVA, 575V/600V Liebert NXL Cable Entry Conduit Plate Actual Usable Area 10.2" x 34.2" (260mm x 870mm) 75.3" (1912mm) TOP VIEW 76.8" (1950mm) UPS Cabinet I/O Bypass Cabinet 61.8" (1570mm) 36.6" (930mm) 39.4" (1000mm) 98.4"...

  • Page 35: Figure 20 Outline Drawing, 400Kva, 575V/600V Liebert Nxl With Dc I/O Cabinet

    Installation Drawings Figure 20 Outline drawing, 400kVA, 575V/600V Liebert NXL with DC I/O cabinet Cable Entry Conduit Plate Actual Usable Area (Service) 10.2" x 34.2" Access Plate (260mm x 870mm) 12" x 12.3" (305mm x 312mm) 19.2" (488mm) Cable Entry 75.3"...

  • Page 36: Figure 21 Main Components, 250Kva, 480V Liebert Nxl

    Installation Drawings Figure 21 Main components, 250kVA, 480V Liebert NXL HMI Keylock or EMO Button HMI Screen (Optional) Liebert IntelliSlot Housings External Interface Board (EIB) Module Output Main Input Circuit Breaker (CB2) Circuit Breaker (CB1) Back Feed Breaker (BFB) Option Box...

  • Page 37: Figure 22 Main Components, 250Kva, 575/600V, And 300Kva, 480/575/600V Liebert Nxl

    Installation Drawings Figure 22 Main components, 250kVA, 575/600V, and 300kVA, 480/575/600V Liebert NXL HMI Keylock or EMO Button HMI Screen Liebert (Optional) IntelliSlot Housings External Interface Board (EIB) Module Output Main Input Circuit Breaker (CB2) Circuit Breaker (CB1) Back Feed...

  • Page 38: Figure 23 Main Components, 400Kva, 480V Liebert Nxl

    Installation Drawings Figure 23 Main components, 400kVA, 480V Liebert NXL HMI Keylock or EMO Button Liebert HMI Screen (Optional) IntelliSlot Housings External Interface Board (EIB) Module Output Main Input Circuit Breaker (CB2) Circuit Breaker (CB1) Back Feed Breaker (BFB) Option Box...

  • Page 39: Figure 24 Main Components, 400Kva, 575V/600V Liebert Nxl

    Installation Drawings Figure 24 Main components, 400kVA, 575V/600V Liebert NXL HMI Screen Module Output External Circuit Breaker Interface (CB2) Board (EIB) Main Input Backfeed Circuit Breaker Breaker (BFB) (CB1) DOORS REMOVED DC Negative Liebert DC Positive Busbar Busbar IntelliSlot Housings Bypass Input &...

  • Page 40: Figure 25 Main Components, 400Kva, 575V/600V Liebert Nxl With Dc I/O Cabinet

    Installation Drawings Figure 25 Main components, 400kVA, 575V/600V Liebert NXL with DC I/O cabinet HMI Screen Module Output External Circuit Breaker Interface (CB2) Board (EIB) Backfeed Main Input Breaker (BFB) Circuit Breaker (CB1) DOORS REMOVED Liebert IntelliSlot Housings Bypass Input &...

  • Page 41: Figure 26 Input/Output Conduit Detail Drawing, 250-300Kva, All Voltages, Liebert Nxl

    Installation Drawings Figure 26 Input/output conduit detail drawing, 250-300kVA, all voltages, Liebert NXL Output 3" Conduit, 2 Places 3.5" Conduit, 2 Places Input 3.5" Conduit, 2 Places Input 3.5" Conduit, 2 Places Output 3.5" Conduit, 2 Places 3" Conduit, 2 Places...

  • Page 42: Figure 27 Input/Output Terminal Detail, 400Kva, 480V Liebert Nxl

    Installation Drawings Figure 27 Input/output terminal detail, 400kVA, 480V Liebert NXL Ø.56 Output .87 (22) (2) 3" Conduit (2) 3.5" Conduit (14)Typ. .98 (25) Bypass Input (2) 3.5" Conduit (2) 3" Conduit Input Bypass 1.75 (44) (2) 3" Conduit (2) 3.5" Conduit Typ.

  • Page 43: Figure 28 Input/Output Terminal Detail, 400Kva, 575V/600V Liebert Nxl

    Installation Drawings Figure 28 Input/output terminal detail, 400kVA, 575V/600V Liebert NXL Cable Entry FRONT Cable Entry BOTTOM Conduit Plate Conduit Plate 12.8" x 33.9" 12.6" x 37" (325mm x 861mm) (320mm x 940mm) Bypass Input and Neutral See Detail A 3.1"...

  • Page 44: Figure 29 Input/Output Terminal Detail, 400Kva, 575V/600V Liebert Nxl With Dc I/O Cabinet

    Installation Drawings Figure 29 Input/output terminal detail, 400kVA, 575V/600V Liebert NXL with DC I/O cabinet FRONT Ø.563" (014mm) Typ. 1.75" (44mm) Cable Entry Conduit Plate 2" (51mm) Typ. 9.2" x 17.1" Cable Entry DETAIL A (233 x 435mm) Conduit Plate...

  • Page 45: Figure 30 Top Cable Entry Routing And Installation Order

    4. Rectifier Input Power (Phases A-B-C) 5. Output Power (Phases A-B-C) 6. Output Neutral 7. Ground The cables must be routed around the fault braces to prevent the cables from coming in contact with other busbars. Vertiv | Liebert NXL 250-400 Installation Manual...

  • Page 46: Figure 31 Bottom Cable Entry Routing And Installation Order

    4.) Bypass Input Power (Phases A-B-C) 5.) Bypass Neutral 6.) DC Power 7.) Ground The cables must be routed around the fault braces to prevent the cables from coming in contact with other busbars. Vertiv | Liebert NXL 250-400 Installation Manual...

  • Page 47: Figure 32 Single-Input Busbar Arrangement-250-400Kva Units

    Low-voltage cables can be installed through the top of each unit. The entry conduit landing plate is shipped inverted. To install, remove conduit plate, flip and reinstall. Removal of side plate is for access to pull wires. Vertiv | Liebert NXL 250-400 Installation Manual...

  • Page 48: Specifications

    The UPS will operate at full load, but the battery charge will either be reduced or off (depending on input current). ** The UPS will operate at full load, but UPS may source share with the batteries (depending on input current). *** UPS will be in Battery mode Vertiv | Liebert NXL 250-400 Installation Manual...
  • Page 49 / 328 rise between 4921-9842 (100m rise between 1500-3000m) Width dimensions are with side panels attached. Subtract 1.4" (35mm) for dimensions without side panels. 2. Depth dimensions include the front door and rear panel. Vertiv | Liebert NXL 250-400 Installation Manual...

  • Page 50: Table 11 Current Ratings-Rectifier Input

    For units with an input transformer, the Rectifier Input Feed Breaker must be set to handle the Liebert NXL transformer inrush of up to eight times the nominal current. 4. For breaker coordination while the module is overloaded, see the current- versus-time values on the overload curves, Figures 34 and 35.

  • Page 51: Table 14 Current Ratings-Battery

    (# of conduits); size of conduits; # -size of phase cables per conduit; size of cable for ground per UPS Rating conduit Copper Conductors Aluminum Conductors (2) 2C 2-600kcmil, #1/0AWG (2) 2.5C 2-750kcmil, #3/0AWG (2) 2.5C 2-750kcmil, #1/0AWG (3) 2.0C 2-500kcmil, #3/0AWG Vertiv | Liebert NXL 250-400 Installation Manual...
  • Page 52 2. For continuous operations not at 86°F (30°C), recommend that the site planner choose the appropriate cable type based on the particular installation requirements. Conduit size is based on FMC type conduit with two neutral conductors rated at 200% of phase. Vertiv | Liebert NXL 250-400 Installation Manual...

  • Page 53: Figure 34 Inverter Overload Data

    Specifications Figure 34 Inverter overload data Vertiv | Liebert NXL 250-400 Installation Manual...

  • Page 54: Figure 35 Bypass Overload Data

    Specifications Figure 35 Bypass overload data Vertiv | Liebert NXL 250-400 Installation Manual...

  • Page 55: Table 16 Recommended Lug Sizes

    — 5/16 0.75 — — 1.25 — — — — — — 7/16 — — 1.25 1.75 1,020 1,050 1.25 1,305 — 1,175 — — — 9/16 1,456 — 1,310 — — — Vertiv | Liebert NXL 250-400 Installation Manual...
  • Page 56 Specifications Vertiv | Liebert NXL 250-400 Installation Manual...
  • Page 58 © 2018 Vertiv Co. All rights reserved. Vertiv and the Vertiv logo are trademarks or registered trademarks of Vertiv Co. All other names and logos referred to are trade names, trademarks or registered trademarks of their respective owners. While every precaution has been taken to ensure accuracy and completeness herein, Vertiv Co.

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