Recent content by saragiha

  1. S

    CT for restricted earth fault (REF) protection

    three line diagram of 500kV Substation Hi... Does somobody have a sample three line diagram of 500kV Substation? I will have a disscussion of this topic, unfortunately I'm new on this topic. Regards, Saragiha
  2. S

    CT for restricted earth fault (REF) protection

    Dear msj, thank you, helpfully
  3. S

    CT for restricted earth fault (REF) protection

    Does somebody could advice me, whether the nominal primary CT to be used for REF protection must be same? The CT I have now as follow: Power Transformer: 60MVA, 150/20kV, Ynyn(0)d1 CT on 20kV switchgear 2000/5, class 5P20 CT on neutral Power Transformer: 1200/5, class X Relay to be used...