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  • Users: Golfex
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  1. Golfex

    Neutral CT sizing

    Hi all, In a substation in Europe we have a YD transformer with the neutral solidly earthed as per the picture below. The transformer is a 155/66 kV 160 MVA. How can I calculate the primary rating of the Neutral CT? Thanks in advance for your help.
  2. Golfex

    False feeder trip

    Dear All, Could you please mentioned the actual reason of the following false tripping of one healthy feeder due to a single line to ground fault on the adjacent feeder. Details are as follows: Both feeders are being fed from the same bus 33KV feeding each one one string of an offshore wind...

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