List 22: Two-Row Distribution Cabinet - Emerson SAG581126000 System Application Manual

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System Application Guide

Spec. No. 581126000 (Model 700

Controls a Low Voltage Battery Disconnect (LVBD) contactor located in an associated

Battery Stand.

The LVD circuit card provides three separate control circuits. Each control circuit can be programmed,

through the MCA, with its own disconnect voltage setpoint and one global reconnect setpoint. One LVD

circuit card can control up to four (4) contactors. Any contactor can be controlled by any of the three

control circuits on the card by setting of user-selectable switches.

Where more than one Distribution Cabinet contains an LVD control circuit card, the control circuits on all

LVD circuit cards can be set to any of the three MCA-controlled disconnect setpoints independently with

user-selectable switches.

Each of the three control circuits on any LVD card consists of two individual battery voltage monitors, both

of which must sense low system voltage before disconnection can occur. This redundancy prevents a

control circuit failure from unnecessarily disconnecting loads or batteries.

The user can set the low voltage disconnect circuits for either automatic or manual reconnect.

Automatic Reconnect: When system bus voltage recovers to a preset adjustable value, the low

voltage disconnect circuits automatically reconnect the loads (or battery) to the system bus.

Manual Reconnect: When system bus voltage has recovered to a preset adjustable value, the user

must issue a command via the MCA to reconnect loads (or battery) to the system bus.

A local switch provided in each Distribution Cabinet can be set to inhibit LVD operation for adjustment,

maintenance, and repair purposes. A local indicator illuminates when the low voltage disconnect circuit has

been inhibited. LVD operation is not inhibited in any other Distribution Cabinets in the power system.

Restrictions

Not available for

List 2

Cannot be ordered with

Ordering Notes

1) Order one (1) Distribution Bus Panel for each List 21 per

2) Order fuses and/or circuit breakers, as required, per

DESCRIPTIONS.

3) Order input and load distribution lugs, as required, per

DESCRIPTIONS.

List 22: Two-Row Distribution Cabinet

Features

♦ Accepts up to two (2) Distribution Bus Panels.

♦ Rated for up to 1000 amperes of distribution.

♦ Available for use in

♦ See also the description of the Quad Shunt circuit card under List

features.

♦ See also the description of the Low Voltage Disconnect circuit card under

List

features.

Restrictions

Not available for

List 2

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.

)

NVBA

bays (no inter-bay busbar landings available).

List 1

if it is to be used with a

List 1

and

List 5

bays.

bays (no inter-bay busbar landings available).

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