Application Guide

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Section 5876 Installation Instructions

Issue AT, April 26, 2013 Spec. No. 582140000 (Models 802

NLDB, 802NLEB and 802NL-B)

Page 4-52 Chapter 4. Making Electrical Connections

This document is property of Emerson Network Power, Energy Systems, North America, Inc. and contains confidential and proprietary information owned by Emerson Network Power, Energy

Systems, North America, Inc. Any copying, use, or disclosure of it without the written permission of Emerson Network Power, Energy Systems, North America, Inc. is strictly prohibited.

AC Input Connections to Lists 4 and 14 Bays

Lists 4 and 14 bays provide connections for two (2) AC input branch circuits. Customer is

to provide AC input branch circuit protection.

Refer to Figure 4-19 for lug landing locations.

Procedure

1) Open the bay’s front door.

2) Refer to Figure 4-19 and locate the Rectifier AC input busbars.

3) The Rectifier AC input busbars are equipped with 3/8-16 studs on 1 inch centers.

Attach Rectifier AC input leads to these using customer supplied two-hole lugs.

When lugs are secured using 3/8 inch hardware; recommended torque is 180

in-lbs when a Belleville lock washer is used, and 300 in-lbs when a standard flat

washer and lock washer are used.

Connect Phase A to the terminal designated "A". Connect Phase B to the

terminal designated "B". Connect Phase C to the terminal designated "C".

Note that Rectifier mounting positions are numbered 1 through 10, starting at the

top of the bay.

4) Equipment grounding conductors must be provided with the AC input conductors

supplied to each bay. Connect to earth ground, not power system neutral.

Refer to Figure 4-19 and locate the Rectifier AC input frame ground studs (3/8-16

studs on 1 inch centers). Attach Rectifier AC input ground leads to these studs

using customer supplied two-hole lugs. When lugs are secured using 3/8 inch

hardware; recommended torque is 180 in-lbs when a Belleville lock washer is

used, and 300 in-lbs when a standard flat washer and lock washer are used.

5) Close the bay’s front door.