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Recent content by adeschamps

  1. adeschamps

    Reduction in Transformer's dissolved gases

    Hello everyone. We have a new 70MVA (34.5/1.0kV)transformer suppliying an EAF (Electric Arc Furnace). We took 2 oil samples within 4 days and I don't really understand the results: GAS-----Feb-08-------Feb-12 H2-------3.79---------2.36 O2-------4,636--------2,492 N2-------14,704------8,123...
  2. adeschamps

    Seconday Current during Power Transformer Energization

    Hi, We recently energized a 166MVA power transformer (230kV / 34.5kV --Grounded Wye / Grounded Wye thru resistance). We recorded currents on the primary and secondary side. The primary currents were as spected (~2000Amps) but I was surprised to see current on the secondary side, these currents...
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