In oil transformer which oil is used & what should be the insulation resis

In oil transformer which oil is used & what should be the
insulation resistance & heating capacity.

Question Posted / shri..

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In oil transformer which oil is used & what should be the insulation resistance & heating ..

Answer / chakri

33kv tr=300 ohm
11kv tr=500 ohm

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In oil transformer which oil is used & what should be the insulation resistance & heating ..

Answer / s.naidu

Naphthenic mineral oil ( higher flash points ) and minimum
safe insulation resistance in 33KV TR-500 ohm
11KV TR-300 omh
insulation at temperaturs more than 120 to 140 c the gas
bubble are formed as a result of insulation deterioration
these is reasion of leading breake down.

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