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Recent content by frelin

  1. frelin

    BBC Distance relay

    Thanks for your reply David, that I can agree on but still you have to base the new settings on something. Regarding the replica impedance vector, I have: 2,6 + 4,3j, which is the impedance of the line if my calculations are correct (below). cot φ = 0,6 → φ = 59˚ cos 59 = r/0,2 → r = 2,6 sin...
  2. frelin

    BBC Distance relay

    Hi, I'm in need for some help, it's regarding an old distance relay of electromechanical type, BBC LI41b, see attached image. The protection relay will be exchanged with a newer one, not decided yet, because of age and no spare parts available. I have managed to get hold of a data paper of a...
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