Emerson Liebert NX On-Line UPS 40-200kVA Installation Guide

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Liebert
®
NX Battery Interface Box
Product Specification/Installation Sheet
SAVE THESE INSTRUCTIONS
This manual contains important instructions that should be followed during installation of your Liebert NX
Battery Interface Board Box. Read this manual thoroughly before working with the DC system. Retain this
manual for use by installing personnel.
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 instruction manual, may cause harmful interference to radio communications. Operation of this unit in a
residential area may cause harmful interference that the user must correct at his own expense.
Placement and Cable Entry
The Liebert Battery Interface Board Box should be installed near the DC disconnect. The location should
allow access to the box and allow the front door to be opened for service. Access to the Battery Interface
Boards (BIB), fuse disconnects and terminal blocks are behind the front door. See Figure 1 for cable entry
layout.
!
WARNING
Risk of electrical shock. Can cause personal injury or death.
The DC terminal voltage connected to this equipment will exceed 400VDC and is potentially
lethal. Be constantly aware that the DC system contains high DC as well as AC voltages.
Check for voltage with AC and DC voltmeters before making contact.
Special safety precautions are required for procedures involving handling, installing and
maintaining the DC system. Only properly trained and qualified personnel wearing
appropriate personal protective equipment should be involved in installing the Liebert NX
Battery Interface Board Box or preparing the system for installation.
Special care must be taken when working with the batteries associated with this equipment.
Observe all DC safety precautions before working on or near the DC system.
The following precautions must be observed when working on this equipment:
Remove watches, rings and other metal objects.
Use tools with insulated handles.
Wear rubber gloves and boots.
Do not lay tools or metal parts on top of batteries.
Disconnect charging source prior to connecting or disconnecting DC terminals.
Determine whether the DC source is grounded. If it is grounded, remove source of ground.
Contact with any part of a grounded DC source can result in electrical shock. The likelihood of
such shock will be reduced if such grounds are removed during installation and maintenance.