Answer / raj

Highly refined mineral oil

Answer / ramarao

Mineral insulating oil / askarel

Answer / viplav

Polychlorinated Biphenyl (PCB)

Answer / deepesh

ASKARAL and also known as mineral oil

Answer / muhammad shahzad

Natural mineral oil is use its trade name is ASKAREL but now
a day commercially use oil in transformer is PYROCLOR.

Answer / hitesh

Include askarals

Answer / chandan singh

Highly treated Napthalene Petroleum Oil

Answer / lalit bidhuri

Synthetic oil

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I have connected 04nos. earthings to a transformer through 04nos. earthing pits seperately. 02nos. earthings are connected to T/F body, and 02nos. earthings are connected to T/F neutral.T/F capacity is 2000KVA, 11KV/415V. But after completing of 02 years successful operation ,we are facing following problems- 1. CT/PT occured blast one time 2. HT cable box occured blast two times 3. One body earthing strip and one neutral earthing strip of transformer are overlapping at some places. Whenever these two strips are pressed at overlapped points, they made spark. What is the reason of spark? Please explain the reason & rectification of above problems

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3 Answers