Check transmit and receive levels. If automatic channel switching or routing is used, check for proper relay operation for alternate routing. Purpose: To document and implement programs for the maintenance of all Protection Systems, Automatic Reclosing, and Sudden Pressure Relaying affecting the reliability of the Bulk Electric System (BES) so that they are kept in working order. 2. IEEE/IAS/I&CPSD Protection & Coordination WG Chair Jacobs Canada, Calgary, AB rasheek. com IEEE Southern Alberta Section PES/IAS Joint Chapter Technical Seminar - November 2016 Protective Relays - Technical Seminar Nov 2016 - Copyright: IEEE 2 Abstract: Protective relays and devices. Relay systems protect high-voltage equipment and transmission lines to ensure safe, stable systems. Although failure of a protective relay system may have severe local or regional impacts, most protective relay systems are not required to operate to prove they are in working order. Ensuring that. Overcurrent Relays: Monitor current levels and trip circuit breakers if currents exceed predefined thresholds, protecting against overloads and short circuits. Distance Relays: Measure impedance to detect faults in transmission lines, aiding in fault location and isolation. One solution is to reduce the incident energy of the arcing fault. While relay testing is an essential task, it must be performed with.