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Question
why we have to do tan delta test of the transformer oil???
 Question Submitted By :: Electrical-Engineering
I also faced this Question!!     Answer Posted By  
 
Answer
# 1
Tan delta test is test for measuring the insulating
capacity of transformer oil.The value of Tan delta deals
with the leakege current through Insulating oil.
 
Is This Answer Correct ?    18 Yes 3 No
Chinni
 
Answer
# 2
to determaine the insulation condition if the tan delta
value is higher than 0.7 for a transformer,then oil has to
be tested in all aspects .from the oil results we can under
stand where the insultion is weaks
 
Is This Answer Correct ?    9 Yes 2 No
Vels
 
 
 
Answer
# 3
tan DELTA test is used to determine the insulation strength of oil
to determine the break down strength,flash point,its fire point,and also to identify the moisture content of the oil

their is certain fix value for all above said......
if the oil colour changes then it may be said that it may not be suitable for large time......
 
Is This Answer Correct ?    9 Yes 2 No
Sunil Guru
 
Answer
# 4
Know about insulation
degradation of transformer
and power cable.
 
Is This Answer Correct ?    3 Yes 0 No
Tapan Desai
 
Answer
# 5
Ionic traces can effect the Tan delta of insulating oil
like transformer oil.The amount of charge particle directly
proportional to the electrical properties, hence tan-delta
test essencial for Transformer oil.
 
Is This Answer Correct ?    3 Yes 1 No
Pati
 

 
 
 
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  Question Asked @ Answers
 
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can anyone tel me what is competency of electrical supervisor?? ONGC 1
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what is power factor? whether it should be high or low? why?   11
on what factor insulation resistance depends Uttam-Sugar 2
why transmition and distribution and genaration of voltage in multible of 11 means 220v,440v,11kv,22kv,,,...so on   3
How to take of Transformer oil Break down voltage test?   2
What are the usege & different between UPS & batteries with charging system in in Substation?( UPS 120V AC & battery charger is 120v DC)   1
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what is the use of power factor ? where its applicable ?   4
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