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Dga question

Dga question

Dga question

(OP)
Dear all,
We have transformer 2500kva and just test transformer with dga and oil analysis, the problem is the dga result is indicating slight overheating 150-300 degree celcius the standard suggest us to retest dga within 6 month..the problem is the BDV result is 22 kv/2.5mm, so is it ok if we do purifiying (offline) to increase the bdv value?because if we wait for 6 month i'm afraid the bdv would be very low in the next 6 month..need advise on this.. Thank you

RE: Dga question

do you have any history of the oil tests.  Higher temps can cause the cellulose to break down - moisture is a byproduct.

 

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