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.
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