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  • Users: Luiseng
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  1. Luiseng

    Impedance Voltage

    Hi All, we are adquiring two power transformers and the value of impedance voltage was specified as 12.25% +-10 but the value after the tests is 14.1%. the question is what are the implications, advantages or disavantages of having a value higher than specified. thanks best regards...
  2. Luiseng

    Power losses calculations

    Hi all, I was given the formula sheet that the manufacturer of one of my power transformer as used to do all the calculations for the power losses. I ma trying to understand them but some formulas do no tie up. the one I am stuck at the moment is this one: Ur% = (Pk/Pn)*100 where Ur% is Ohms...
  3. Luiseng

    Power transformer calculations

    Hi all, I have a 3ph 2700KVA continuous rating or 12677KVA pulsed at 36KV/670V transformer, I received the test results sheet from the manufacturer and I am trying to go trough the calculations to check it out. They also kindly supplied the formulas that they use for their calculations. The...

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