State the causes for dielectric failure of highly purified transformer oil.

State the causes for dielectric failure of highly purified transformer oil. 
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1 Answer

Answer :

The causes for dielectric failure of highly purified transformer oil: 

1. Voltage rating

2. Humidity in atmosphere

3. Temperature of the oil

4. Due to improper cable joints and connection.

5. Increasing in supply frequency.

6. Due to unbalanced load. 
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