Daily Transformer Inspection Checklist for Safe and Efficient Operations

Daily Transformer Inspection Checklist

Regular inspection of transformers is essential for their efficient operation and long life. Below is a simple checklist for daily transformer inspection to ensure safety and performance.

1. Check and Record Winding Temperature

Monitor the winding temperature and note it down. Abnormal temperature rise may indicate a fault.

2. Check and Record Oil Temperature

Measure and record the oil temperature. Overheating of oil can reduce its insulating properties.

3. Check Conservator Tank Oil Level

Ensure the oil level in the conservator tank is adequate. A low level may indicate leakage or oil degradation.

4. Check for Oil Leakages

Inspect the transformer for any visible oil leaks, which can lead to serious operational issues.

5. Check the Colour of Silica Gel

The silica gel in the breather should be pale blue. If it turns pink or white, it needs to be replaced as it has absorbed moisture.

6. Check the Explosion Vent Diaphragm

Inspect the explosion vent diaphragm for any damage or signs of leakage. It helps in pressure relief during faults.

7. Check Buchholz Relay Oil Level

Ensure the oil level in the Buchholz relay is within limits. It detects gas accumulation due to internal faults.

8. Check Cleanliness of Transformer Yard

Keep the transformer yard clean and free from dust, debris and vegetation to prevent hazards.

9. Check Tap Changer Position

Confirm the tap changer position and ensure it is as per the requirement for voltage regulation.

10. Check for Fire Extinguishers

Verify the availability and working condition of fire extinguishers near the transformer for emergency response.

11. Check Tap Position of Transformer

Ensure the tap position is correct and aligns with operational needs to maintain a stable power supply.

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