oil sample dielectric test gives the insulation rupture voltage at 26 kv. is

oil sample dielectric test gives the insulation rupture
voltage at 26 kv. is this transformer safe to be operated .
The working voltage is 11 kv

Question Posted / pillay

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oil sample dielectric test gives the insulation rupture voltage at 26 kv. is this transformer saf..

Answer / sms

AS PER IS:6792 , Oil Electric break down voltage( BDV) at
room temp using 2.5 mm gap should be Min 30 KV .
Accordingly don't take risk and carry out oil filteration
as early as possible to avoid any break down.

Is This Answer Correct ?

2 Yes

1 No

oil sample dielectric test gives the insulation rupture voltage at 26 kv. is this transformer saf..

Answer / k.prakashchandra

40 KV is the minimum value required. You need not panic.
Measure the BDV again after 15 days. If there is drop ,oil
filtering is to be done at the earliest

Is This Answer Correct ?

1 Yes

1 No

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