Class 7 of 8: Line Protection: Distance (21) Reach Settings, Pilot Schemes, Reclosing (79) and Synch Check (25). This self-paced class covers distance relay secondary impedance and zone reach calculations, k0 compensation, infeed, pilot schemes (DCB, POTT, PUTT, DCUB, DTT, 87L), reclosing dead time and 25 synchronism check, plus a field walkthrough and a case study. It has about 45 minutes of lesson content plus video activities and a 30-question quiz. It is part of the SubstationU.com Protective Relaying Series, Intermediate Protective Relaying (Level 2 course). Continuing education credit: 0 (none awarded yet).
Read the lesson book and complete the video activities, then pass the 30-question quiz with 80% (24 of 30) or better; you can retake the quiz as many times as you need until you pass.
Class 7 of 8 in the Level 2 series, Intermediate Protective Relaying (PR-201 to PR-208). Recommended order: PR-201 through PR-209; classes may be taken in any order. Level 1 (PR-101 to PR-109) is recommended preparation.