Section 9: Installation, Operation And Maintenance Notice - Eaton IZM6 Series Instruction Manual

Air circuit breaker

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Operating instruction (76 pages)

Table Of Contents

Table of Contents

Section 9: Installation, operation and mainte-

nance notice

Installation and operation warnings

To ensure the safety of your personal and electrical equipment,

users must observe the following before the circuit breaker is put

into operation:

• Read carefully the operating instruction manual before mount-

ing and operating on the circuit breaker.

• Make sure that the circuit breaker is used under normal oper-

ating conditions.

• Prior to mounting, check whether the specifications of the cir-

cuit breaker meet the requirements for operation.

• Prior to mounting, measure the insulation resistance of the

circuit breaker with a 500V megohmmeter. The measured

insulation resistance shall be equal to or greater than 500 MQ

with the ambient air temperature of 20°C ±5°C and the relative

temperature of 50% to 70%. Otherwise, dry the device until its

insulation resistance meets the requirements for operation.

• During mounting, make sure that the mounting surface of the

circuit breaker is in a horizontal position and fastened with M6/

M12 bolts.

• During mounting, make sure that no conductive foreign objects

fall into the circuit breaker.

• During mounting, ensure that the conductive bus bar connect-

ed to the circuit breaker should be flat and without additional

mechanical stress.

• During mounting, the circuit breaker must be reliably ground-

ed with an obvious grounding symbol sign at the ground point.

• After the circuit breaker is mounted, follow below steps to con-

duct operational testing before the main circuit is energized.

Make sure that everything is in normal conditions prior to

energizing the main circuit.

•

Check carefully whether there is any foreign object fallen

into the circuit breaker. If any, the object must be com-

pletely removed, and the circuit breaker must be kept clean

and clear.

•

Connect the secondary circuit according to the relevant wir-

ing diagram, and check whether the operating voltage of the

shunt release, closing release, motor operating mechanism

and trip unit are in consistent with the actual power volt-

age; then energize the secondary circuit. For drawout circuit

breakers, their basic device should be levered into the test

position.

•

After the motor operator is fully charged, press the closing

button (electric or manual) to close the circuit breaker.

•

Press the opening button (electric or manual), and the cir-

cuit breaker should be opened.

•

Reliably open the circuit breaker with the trip unit's testing

function. Press the RESET button upon completion of the

test.

•

During manual charging, press up and down the handle

on the front panel. Repeat this operation seven times, and

the rear panel will display "Charged". After a "click" sound is

heard, the charging is done.

The circuit breaker can only be put into operation after testing

with the above steps to prove normal operations!!!

IZM6 Series Air Circuit Breaker Instruction Manual MN013019EN March 2023 www.eaton.com.cn