Liebert NXL User Manual
Liebert® NXL™ Ship-Ahead Input/Output Cabinet
Installation Manual – 250-400kVA, 60Hz
AC Power
For Business-Critical Continuity™
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 distributor is responsible for providing qualified, factory-authorized service.
For LGS to assist you promptly, please have the following information available:
Part numbers: _________________________________________________________________
Serial numbers:________________________________________________________________
Rating: _______________________________________________________________________
Date purchased: _______________________________________________________________
Date installed:_________________________________________________________________
Location: ______________________________________________________________________
Input voltage/frequency:________________________________________________________
Output voltage/frequency: ______________________________________________________
Battery reserve time:___________________________________________________________
Product Warranty Registration
To register for warranty protection, visit the Service and Support section of our Web site at:
www.liebert.com
Click on Product Registration and fill out the form.
TABLE OF CONTENTS
1.0 MECHANICAL INSTALLATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2
1.1 Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
1.2 Preliminary Checks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
1.3 Environmental Considerations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
1.4 Positioning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
2.0 ELECTRICAL INSTALLATION. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4
2.1 External Protective Devices. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
2.2 Power Cables . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
3.0 INSTALLATION DRAWINGS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
FIGURES
Figure 1 Input/output conduit detail drawing, 250-300kVA Liebert NXL UPS . . . . . . . . . . . . . . . . . . . . . . 9
Figure 2 Input/output conduit detail drawing, 400kVA Liebert NXL UPS . . . . . . . . . . . . . . . . . . . . . . . . . 10
Figure 3 Top cable entry routing and installation order . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Figure 4 Bottom cable entry routing and installation order . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Figure 5 Floor mount brackets—standard and optional layout . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
TABLES
Table 1 Current ratings—rectifier input . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Table 2 Current ratings—bypass input . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Table 3 Current ratings—output. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Table 4 Current ratings—battery . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Table 5 Recommended conduit and cable sizes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Table 6 Recommended lug sizes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
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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
tions that apply to your installation, before working with the UPS. Retain this manual for use by
installing personnel.
!
!
™
Input/Output Cabinet. Read this manual thoroughly, paying special attention to the sec-
WARNING
Risk of electrical shock. Can cause personal injury or death.
Check for voltage with both AC and DC voltmeters before working within the cabinet. Check
for voltage with both AC and DC voltmeters before making contact.
Only properly trained and qualified personnel wearing appropriate safety headgear, gloves,
shoes and glasses should be involved in installing the UPS or preparing the UPS for
installation. When performing maintenance with any part of the equipment under power,
service personnel and test equipment should be standing on rubber mats.
In case of fire involving electrical equipment, use only carbon dioxide fire extinguishers or
those approved for use in fighting electrical fires.
Extreme caution is required when performing installation.
Special safety precautions are required for procedures involving handling, installation of the
UPS system. Observe all safety precautions in this manual before handling or installing the
cabinet. Observe all precautions in the Operation and Maintenance Manual, SL-25425, before
as well as during performance of all maintenance procedures. Observe all DC safety
precautions before working on or near the DC system.
WARNING
Risk of heavy unit falling over. Improper handling can cause equipment damage, injury or
death.
Exercise extreme care when handling the cabinet to avoid equipment damage or injury to
personnel.
Locate center of gravity symbols and determine unit weight before handling each cabinet.
Test lift and balance the cabinets before transporting. Maintain minimum tilt from vertical at
all times.
Slots at the base of the modules cabinets are intended for forklift use. Base slots will support
the unit only if the forks are completely beneath the unit.
Read all of the following instructions before attempting to move, lift, remove packaging from
or preparing unit for installation.
WARNING
!
Risk of electrical shock and fire. Can cause equipment damage, personal injury or death.
The area around the cabinet should be kept free of puddles of water, excess moisture and
debris.
Only test equipment designed for troubleshooting should be used. This is particularly true for
oscilloscopes. Always check with an AC and DC voltmeter to ensure safety before making
contact or using tools. Even when the power is turned Off, dangerously high potential electric
charges may exist at the DC connections.
All wiring must be installed by a properly trained and qualified electrician. All power and
control wiring must comply with all applicable national, state and local codes.
One person should never work alone, even if all power is disconnected from the equipment. A
second person should be standing by to assist and to summon help in case of an accident.
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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 shipped with details of its own mechanical and
electrical 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.
Mechanical Installation
1.2 Preliminary Checks
Before installing the cabinet, please carry out the following preliminary checks:
• Visually examine the cabinet for transit damage, both internally and externally. Report any damage to the shipper immediately.
• Verify that the correct equipment is being installed.
• Verify that the UPS room satisfies the environmental conditions stipulated in the equipment
specification, paying particular attention to the ambient temperature and air exchange system.
1.3 Environmental Considerations
1.3.1 UPS Room
The cabinet intended for indoor installation and should be located in a cool, dry, clean-air environment.
When bottom entry is used, the conduit plate must be installed.
NOTE
The UPS is suitable for mounting on concrete or other non-combustible surface only.
1.4 Positioning
The Liebert NXL Input/Output Cabinet is structurally designed to withstand lifting from the base.
CAUTION
!
Risk of unit tipping over. Can cause equipment damage and personal injury.
Floor mount 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 to
another Liebert NXL product.) Failure to comply with these instructions could result in
equipment damage and/or injury to personnel.
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