MAINTENANCE ACB, VCB AND SF6 SERVICE | TESTING | REPAIRING
- Visual inspection and cleaning of the breaker’s exterior and interior components.
- Lubrication of moving parts and mechanisms.
- Tightening of connections and fasteners.
- Verification of labels, markings, and rating plates.
Testing:
- Functional tests to ensure proper opening and closing operations.
- Testing of protection functions like overcurrent, short-circuit, and earth-fault protection.
- Insulation resistance testing to assess the health of insulation materials.
- Contact resistance testing to ensure efficient electrical connections.
- Timing tests to determine the time taken for the breaker to trip after receiving a signal.
- Verification of temperature rise during operation.