Rockwell-automation 140U Q and M-Frame Circuit Breakers Instruction Le Manual de usuario descargar pdf (Pagina 2)

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WARNING

IF ENERGY

APPLIED TO SHUNT TRIP LEADS, DO

NOT ATTEMPT TO RESET AND CLOSE THE CIRCUIT

BREAKER. ATTEMPTING TO CLOSE THE CIRCUIT

BREAKER WHILE ENERGIZED WILL RESULT IN A

SHOCKOUT

CONDITION.

Table

1-1

lists application and electrical operating rating

data for the shunt trip.

For this publication, the term circuit breaker shall also

include molded case switch and motor circuit protector.

Depending on the model ordered, connections for the

shunt trip are in one of four forms. The standard wiring

configuration is pigtail leads exiting the rear of the base

directly behind the shunt trip. Optional configurations

include a terminal block mounted on the same side of the

base as the accessory, leads exiting the side of the base

where the accessory is mounted, and leads exiting the

rear of the base on the side opposite the accessory. The

inch long pigtail leads are color coded for identifica

tion; identification labels are provided for pigtail leads and

terminal block points. For allowable locations of all acces

sories, refer to Selection Guide

Note: When the walking beam interlock is used with

the circuit breaker, the rear trough cannot be used for

accessory pigtail leads.

This instruction leaflet

(I.L.)

gives detailed procedures for

installing the shunt trip.

2. INSTALLATION

Note: The shunt trip can be field

installed in Q and

M Frame circuit breakers.

Before attempting to install the shunt

trip,

check that

the catalog number is correct as ordered and that the

rating of the accessory satisfies job requirements.

The shunt trip, shown in kit form in Fig.

is installed in

tble right or left accessory mounting cavity

pole circuit breaker with a

fixed thermal or

adjustable thermal trip unit; and, in the left pole only of a

circuit breaker with an

electronic trip unit. A shunt

trip must be installed in the circuit breaker before the cir

cuit breaker is mounted in an electrical system.

install

the shunt trip, perform the following procedures:

Note: A circuit breaker that is mounted in an electri

cal system must be removed to install the accessory.

To ensure correct accessory installation, the circuit

breaker must be placed on a horizontal surface.

WARNING

THE VOLTAGES IN ENERGIZED EQUIPMENT CAN

CAUSE DEATH

SEVERE PERSONAL INJURY.

BEFORE REMOVING A CIRCUIT BREAKER

INSTALLED IN

ELECTRICAL SYSTEM, MAKE

SlJRE THE CIRCUIT BREAKER

SWITCHED TO THE

OFF

POSITION AND THERE

NO VOLTAGE

PRESENT WHERE WORK

TO BE PERFORMED.

SPECIAL ATTENTION SHOULD BE PAID TO

REVERSE FEED APPLICATIONS TO ENSURE NO

VOLTAGE

PRESENT.

Note: For new circuit breaker installation, the trip unit

must be installed in circuit breaker before attempting

to install

shunt trip.

2-1.

Switch circuit breaker

OFF position.

2-2.

Disconnect and remove circuit breaker from instal

lation and terminal connections.

2-$3.

Remove cover screws and covers

Note: For a shunt trip having rear or opposite

side

exiting pigtail leads, thread leads through center

trough

side of base before attempting to insert the

mounting bracket. Pigtail leads exiting in this manner

shlould be eased through trough as mounting bracket

is inserted

into

trip

unit

retaining

slots.

Use center

trough also for leads exiting the side of the circuit

rlea ke r.

2-4.

Route wiring to meet installation requirements.

(See Fig.

2-2.):

40752-075(1) Effective 4/02

Where local codes and standards permit and UL list-

ing is not required, internal accessories can be field

installed in sealed circuit breakers. In this case, UL

listing becomes invalid and the label should be

removed.

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Rockwell-automation 140U Q and M-Frame Circuit Breakers Instruction Le Manual de usuario Pagina 2

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