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  1. setiawanmarten

    Winding insulation resistance

    Dear all, We just test transfomer 3000 KVA , primer 20.000 V and secunder 90 V. We test the winding insulation resistance : P to ground (with secunder Short to Ground) result : 13.200 MegOhm S to ground (with primer short to ground) result ...
  2. setiawanmarten

    High c2h2 but low h2

    Dear all, Is it possible to get dga result with high c2h2 but low h2? Thank you
  3. setiawanmarten

    Abnormal dga

    Dear all, I have this problem with my dga result on tranformer 6545 kva 11 kv to 254 v , co 390, co2 3663, ch4 482, c2h2 0, c2h4 560, c2h6 224, h2 2361 , tdcg 4031, according to duval said thermal fault over 700 deg c..what should i do with this transformer?
  4. setiawanmarten

    Polarization index

    Dear all, I have this transformer 6000 kva , primer 11.000 v , sec 245 v, teh dga result was indicating high h2, i am planning to do polarization index, is it save to inject 500v dc to secunder for 10 minutes for pi test the secunder? (twice the nominal rating of the secundr)From the standard...

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