Emerson Liebert NX 40-200kVA Specification Sheet

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.

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.

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.

1

Control Connection

NOTE:

1. All dimensions are in inches (mm).

2. Mounting hardware must support the full
weight of units and be appropriate for the
material the box will be attached to.

Dia. 0.78 (20)
Knockout
4 Places

Mounting Slot Dia.

0.25 (6.4); 2 Each
Hole Cutout Dia.

0.63 (16); 2 Each

A

FRONT

BOTTOM

TOP

LEFT SIDE

0

4.3

(109)

8.3

(211)

10.8
(274)

12.6 (320)

0

12.6
(320)

0

1.8 (46)

1.8

(46)

1.8 (46)

0 10.8 (274)

0

RIGHT SIDE

0

3.6 (92)

FRONT (MOUNTING)

DETAIL A

0

0.7 (18)

11 (279)

0

6.3

(160)

536210GX - Submittal

Each Liebert NX Battery Interface Board Box contains two Battery Interface Boards (BIB). All DC systems
must have their Battery Interface Board controls connected in series. The control cables must be double­insulated. The wire must be 600V, 16-18 AWG stranded wire.

NOTE

Care must be taken to route control cables away from high-voltage cables and busbars. Use
recommended knockouts for installing all cables and use provided tie point to secure (see
Figure 2).

NOTICE

Risk of improper installation. Can cause equipment damage.
During system commissioning, Emerson Network Power Liebert Services will set the jumpers

on the External Interface Board in the Liebert NX UPS and the BIB. If another DC source is
added to the system after commissioning, it is imperative that Liebert Services reset the
jumpers on the EIB board and the BIB board.

Figure 1 Dimensions and layout

Table 1 Battery Interface Board Box specifications

Parameter

DC Sense Volts, VDC 384-576

DC Sense Current, IDC 0.5A

Shunt Trip Volts, VDC 220V

Dry Contacts Volts, VDC (Auxiliary Contacts) 220V

Dry Contacts Volts, VDC (Breaker Aux) 10mA

Mounting Hardware (supplied by others)

Value s

Must support

30 lb. (13.6kg)

2