Answer / p.s.suresh

1. first we will take filltered oil in test kit.
2. then maintained 2.5mm gap between electrode and applying
rated 40 & 60 Kv for 1 minite .
3. the above test withstood for 1 minite its ok for
energiseing the transformer.

Answer / c.b.sharma

1.first we will take filltered oil in test kit.
2. then maintained 2.5mm gap between electrode and applying
rated 40 & 60 Kv for 1 minite .
3. the above test withstood for 1 minite its ok for
energiseing the transformer.

Answer / vinod

1)Take transformer oil sample from both bottom and top
section with suitable container on dry day
2)Adjust the BDV kit electrode for 2.5 mm and ceck with
gauge, increase the voltage till breakdown occur
3)Now a day automatic tester is available it will take
consicutive five readings with stiror. third reading will
be the BDV.

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