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Power Circuit Breakers & Circuit Switchers
Perform scheduled preventive maintenance on air, oil, vacuum, SF6 Power circuit breakers and SF6 gas insulated circuit switchers and their associated operating mechanisms and control systems. |
- Insulation Power Factor
- Contact Time-travel Analysis
- Contact Resistance Test
- Bushing Current Transformer Tests (Ratio, Polarity And Saturation)
- Filter Insulating Oil As Required
- Perform Oil Dielectric Test
- Oil Color (before and after filtering)
- Inspect Operating Mechanism-Adjust, Lubricate and Clean As Required
- Check Control Wire
- Check Auxiliary AC and Heaters
- Check Trip and Close Coil Resistance's
- Perform Pressure System Checks As Recommended by Manufacturer
- Perform Primary Current Injection Tests and Calibrate Protective Devices
- Perform Secondary Current Injection Tests
- Perform Insulation Resistance and Over potential Tests
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