Instruction Leaflet for Shunt Trip Owner's manual

ManualsBrandsRockwell Automation ManualsEquipment140U Q and M-Frame Circuit Breakers

WARNING

CONTACT WITH ENERGIZED EQUIPMENT CAN

RESULT IN DEATH, SEVERE PERSONAL INJURY,

SUBSTANTIAL PROPERTY DAMAGE. DO NOT

ATTEMPT TO INSTALL

PERFORM

MAINTENANCE ON EQUIPMENT WHILE IT

ENERGIZED. ALWAYS VERIFY THAT NO VOLTAGE

PRESENT BEFORE PROCEEDING WITH THE TASK,

AND ALWAYS FOLLOW GENERALLY ACCEPTED

SAFETY PROCEDURES.

ALLEN-BRADLEY

NOT LIABLE

FOR

THE

MISAPPLICATION

OR MISINSTALLATION

OF ITS

PRODUCTS.

The user is cautioned to observe all recommendations,

warnings, and cautions relating

the safety of personnel

and equipment as well as all general and local health and

safety laws, codes, and procedures.

The recommendations and information contained herein

are based on Allen-Bradley experience and judgement,

but should not be considered to be

all-inclusive or cover

ing every application or circumstance which may arise. If

any questions arise, contact Allen-Bradley for further

information or instructions.

INTRODUCTION

Fig.

Shunt Trip Installed in

Frame

Circuit Breaker

GENERAL INFORMATION

The shunt trip (Fig.

provides remote controlled elec

trical tripping for the circuit breaker.

consists of an inter

mittent rated solenoid with a tripping plunger and a cutoff

switch attached

a plug

in module. The plug

in module

is mounted in

slots

in the top

the trip unit and occupies

the accessory cavity in the circuit breaker frame. When

the solenoid is energized, the plunger extends and

presses against an intermediate plunger which operates

the trip bar in the trip unit.

the circuit breaker trips, the

molded crossbar presses against the cutoff switch oper

ating arm to open the cutoff switch, disconnecting power

the solenoid and preventing coil burn out.

40752-075(1) Effective 4/02

Q and M-Frame Circuit Breakers

Instruction Leaflet for Shunt Trip

Bul. 140U

Summary of content (8 pages)

PAGE 1
Bul. 140U Q and M-Frame Circuit Breakers Instruction Leaflet for Shunt Trip A 1. INTRODUCTION A WARNING CONTACT WITH ENERGIZED EQUIPMENT CAN RESULT IN DEATH, SEVERE PERSONAL INJURY, OR SUBSTANTIAL PROPERTY DAMAGE. DO NOT ATTEMPT TO INSTALL OR PERFORM MAINTENANCE ON EQUIPMENT WHILE IT IS ENERGIZED. ALWAYS VERIFY THAT NO VOLTAGE IS PRESENT BEFORE PROCEEDING WITH THE TASK, AND ALWAYS FOLLOW GENERALLY ACCEPTED SAFETY PROCEDURES.
PAGE 2
Page 2 a WARNING IF ENERGY IS 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.
PAGE 3
Page 3 A 2-6. CAUTION LEADS SHOULD BE FORMED AND ROUTED TO CLEAR ALL MOVING PARTS WHEN ACCESSORY IS PROPERLY INSTALLED. PIGTAIL WIRES COULD BE DAMAGED IF IN CONTACT WITH MOVING PARTS. IF SHUNT TRIP IS REMOVED FROM CIRCUIT BREAKER, INTERMEDIATE PLUNGER MUST ALSO BE REMOVED. FAILURE TO REMOVE THE INTERMEDIATE PLUNGER CAN RESULT IN EQUIPMENT DAMAGE. 2-5. Insert shunt trip as described in the following steps (Fig 2-3) A A WARNING FAILURE TO KEEP FINGERS AWAY FROM MOVING PARTS CAN CAUSE PERSONAL INJURY.
PAGE 4
Page 4 Fig. 2-1 Shunt Trip Kit I Fjg. 2-3 Rear Exiting Leads (Preferred) Side Exiting Leads Fig.
PAGE 5
Page 5 Terminal Block Connection Diagram Label (When Used) Identification Label Pigtail ~ Flat Blade Screwdriver Diagram (When Used) Fig. 2-5 Preferred Mounting Locations for Accessory Nameplate Labels Note: For molded case switches, omit step c. c. Press PUSH-TO-TRIP button - no continuity. Fig. 2-4 Screwdriver Depressing Shunt Trip Solenoid Plunger d. If cutoff switch fails test, make sure that shunt trip module is properly seated in trip unit slots. If problem persists, contact Allen-Bradley.
PAGE 6
Page 6 r---- - - - - - -------7 Pigtail Leads I Fig. 2-6.
PAGE 7
Page 7 TABLE 1-1. SHUNT TRIP ELECTRICAL RATING DATA Average circuit breaker contact total opening time approximately 6 milliseconds, depending on voltage. Endurance - 400 electrical operations plus 5600 mechanical operations Shunt trip can be operated up to a maximum of six times per minute Maximum operating voltage - 110% of maximum voltage range rating Terminal block is approved for use with one or two No. 18 to No. 14 AWG solid or stranded copper wires. Torque is 7 Ib-in (0.8 Nm).
PAGE 8
Page 8 40752-075(1) Effective 4/02 Printed in U.S.A.