Causes and Elimination Methods of Automatic Disconnection of Circuit Breaker During Operation

DC Circuit Breaker--Causes and Elimination Methods of Automatic Disconnection of Circuit Breaker During Operation

1. The reason why the circuit breaker is automatically disconnected when starting the motor:

1. The instantaneous setting current of the electromagnetic overcurrent release is too small

2. The valve of the air release is out of order or the rubber membrane is broken

Corresponding to its exclusion method can be:

1. Adjust the instantaneous setting current

2. Replacement

Second, the reason why the circuit breaker automatically disconnects after working for a period of time:

1. The long time delay setting value of the overcurrent release does not meet the requirements

2. Thermal element or semiconductor element is damaged

3. External electromagnetic field interference

Corresponding to its exclusion method can be:

1. Readjust

2. Replace components

3. Quarantine

DC Circuit Breaker--Causes and Elimination Methods of Overheating of Circuit Breaker During Operation

1. The contact pressure of the contact is too small

2. Excessive wear or poor contact on the contact surface

3. The connecting screws of the conductive parts are loose

Corresponding to its exclusion method can be:

1. Adjust or replace the contact spring

2. Repair the contact surface or replace the contact

3. Tighten the screw