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  • Users: maxljahnke
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  1. maxljahnke

    Effects of transformer oil reconditioning on DGA

    Hello. One particular question has tormented me for some time now since I haven't been able to find an assertive answer to it. How does treating the transformer's oil with a vacuum dehydrator may affect the trend of your DGA, particularly regarding to furan measurements to estimate the degree...
  2. maxljahnke

    HV busbar tripping

    In a system consisting of 6 13.2/0.44kV 60Hz 1.75MVA transformers, fed from a 69/13.2kV 7.5MVA transformer, each having its own cubicle with a Schneider Sepam S40 protection relay, there was an event that tripped all 6 circuit breakers. The reason of the trip was "underfrequency". Settings are...

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