Transformers

Daily

  1. Inspect temperature.
  2. Inspect noise and vibration.
  3. Inspect leakage.

 

Quarterly

  1. Physical inspection.
  2. Inspect breathing intakes.
  3. Inspect bushings.
  4. Inspect oil levels.

 

Annually

  1. Inspect labels and terminal indicators.
  2. Inspect and calibrate gauges, meters.
  3. Physical inspection and cleaning.
  4. DGA (dissolved gas analysis).
  5. Inspect oil condition.
  6. Inspect alarm relays/contacts.
  7. Inspect pressure relief device.
  8. Thermographic scanning.
  9. Inspect fans/filters.

 

Year

  1. Insulation test.
  2. Inspect conservator and bladder.