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  1. cuban1024

    SEL 487E

    @wcaseyharma even if the overcurrent is looking outside of the differential zone as feeder backup?
  2. cuban1024

    SEL 487E

    hi guys, if I want to use the element 50/51 in SEL487E to protect a feeder out of the differential zone, should I use a different CT or I can use the same CT used for the 87 element? Thank you.

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