The following points to be noted for maintenance of
capacitor.

- Check tightness of connection periodically
- Use harmonics analyzer for analysis of harmonics due to non – linear load
- If non – linear load increase significantly, harmonic study is done
- If harmonics are present, de-tuned capacitor banks ( reactor ) must be considered
- Take current reading twice in a year and compare with normal current
- Check discharge resistors and its function by ( 1 ) Increasing the power and then decrease ( 2 )
- Check the temperature of capacitor after continuous operation when the capacitors have been switched off.
- If the temperature of the single capacitor bank exceed beyond its limit, replace single capacitor bank

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