Case study · Automotive components · Power factor
A capacitor bank’s recorded energy fell after repair. The size of the fall is being confirmed.
Evidence: Identified · no rupee figure until confirmed
- Industry
- Automotive components
- System
- Power factor correction
What was found
Before repair, the bank’s recorded draw was about 22 kW, with uneven current on two phases. A healthy bank of this size loses about 1 kW, and a meter phase error at near-zero power factor can show a false kW reading.
What was done
The bank was repaired over two targeted maintenance visits. Its recorded draw after repair was about 9 kW. The cause is being confirmed.
What is next
The bank incomer will be logged with a Class A analyser for 7 days. The check will also show whether fewer capacitor stages are now in service, which would mean lost correction, not saved energy. Any bank with hot cans, bulging or oil leaks is taken out of service by the plant’s electrician.
Cost and benefit
| Recorded draw before | about 22 kW (meter accuracy not checked) |
|---|---|
| Recorded draw after | about 9 kW |
| Money | Not stated until a Class A reading confirms the loss |
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