Answer / pk.shivakumar

@ 2.5 mm gap 6 six readings average should be min. of

30kV for 11kV to 66 kV
40kV for up to 110 kv
50kV for above 230 kV

Answer / k.prakashchandra

Minimum bdv in kv - 60 for 170kv and above class , 50 for
for 72.5 to 170 kv , 40 for below 72.5 kv

Answer / nagarjun

The break down voltage of a transformer is should greater than or raising to 75kv.

Answer / dattatray

breakdown voltage of the transformer oil will be 3 times of applied voltage.

Answer / priyanka r

According to standards it id 12kV/mm

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