This lecture describes various types of overcurrent relay containing different types of characteristics. The relay coordination using electromechanical/static relay and the three overcurrent and one earth fault relay schemes are described. Thereafter, directional overcurrent protection is highlighted with an appropriate example. Finally, the requirement of digital overcurrent relays for relay coordination is deliberated.
Негізгі бет Lec-21: Coordination of Overcurrent Relays for Distribution Network-I
Пікірлер: 2