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Question 
How to take Transformer oil Break down voltage test?
 Question Submitted By :: Sanjibkrsinha
I also faced this Question!!     Rank Answer Posted By  
 
  Re: How to take Transformer oil Break down voltage test?
Answer
# 1		 TRANSFORMER OIL BDV is carried out as per IS-336 for nomal
and IS-12463 for High viscosity oil.
1.Take one sample from top of Transformer and one from the
bottom of transformer.
2.The BDV of oil should withstood min 50 KV
3.The gap between the test sample is 2.5mm maintained
4.Each sample(top/bottom) should be checked seperately
5.Procedure
a.Voltage should be gradually increased from 0.
b. At one point Flash will take place and that point is
termed as Bread down Voltage 
Is This Answer Correct ?    108 Yes 10 No
Dinesh Kumar
 
  Re: How to take Transformer oil Break down voltage test?
Answer
# 2		 that means the transformer oil withstand the temparature
capacity that is called as breakdown voltage test in
transformer 
Is This Answer Correct ?    6 Yes 43 No
Suthagar.s
 
 
 
  Re: How to take Transformer oil Break down voltage test?
Answer
# 3		 answer 1 is very correct. 
Is This Answer Correct ?    32 Yes 7 No
Selvan
 
  Re: How to take Transformer oil Break down voltage test?
Answer
# 4		 the breakdown voltage need not be 50kv but the min BDV is
30kv at 2.5mm gap between the electrodes 
Is This Answer Correct ?    24 Yes 3 No
Sri Rama Murthy
 
  Re: How to take Transformer oil Break down voltage test?
Answer
# 5		 *Take one sample from top of Transformer and one from the
bottom of transformer.
*The BDV of oil should withstood min 50 KV
*The gap between the test sample is 2.5mm maintained
*Each sample(top/bottom) should be checked seperately
*Procedure
a.Voltage should be gradually increased from 0.
b.At one point Flash will take place and that point is
termed as Bread down Voltage.
*If its withstand means the viscosity of transformer oil is
good 
Is This Answer Correct ?    3 Yes 7 No
Saravanan.m
 
  Re: How to take Transformer oil Break down voltage test?
Answer
# 6		 Regarding the withstand voltage I think It depends on the
type and quality of the oil itself. 
Is This Answer Correct ?    1 Yes 1 No
Hamed
 
  Re: How to take Transformer oil Break down voltage test?
Answer
# 7		 Please anyone can tell me the dia. of the electrodes????? 
Is This Answer Correct ?    0 Yes 0 No
Deepak Sharma
 
  Re: How to take Transformer oil Break down voltage test?
Answer
# 8		 tell me why take sample both side (top/bottom)?
why not take from bottom any problem 
Is This Answer Correct ?    0 Yes 1 No
Muhammad Owais
 

 
 
 
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