Equipment Maintenance Checklist
Transformers
- Insulation resistance
- Transformer turns ratio
- Winding power factor
- Excitation current
- Bushing capacitance
- Oil power factor
- Dielectric
- Acid Tension
- Color
- DGA
- Specific Gravity
- Interfacial On Liquid
- Core ground strap
- Visual Condition
Surge Arrestor
- Insulation resistance
- Watt loss
Load Tap Changer
- Insulation resistance
- Winding resistance test on each tap
- Tap changer auxiliary motor test
- Operational check step up
- Winding resistance test on each tap
- Power and dissipation factor test
Switchgear
- Contact resistance
- Insulation resistance
- Minimum pick up voltage
- Breaker timing tests
- Verify operations heater
- SF6 purity
- SF6 Leakage testing
- SF6 Pressure
- Dew Point
- Interlock
- Vaccuum Bottle Integrity Breaker Vacuum
- Auxiliary feature testing
- Breaker trip operation through protective device
- Power and dissipation factor on each pole
A Tasmea Company
www.tasmea.com.au