When the relay trips, it opens the circuit breaker or triggers the circuit breaker simulator and sequence event recorder. ... In testing electromechanical or solid state relays, a digital aquot;watchdogaquot; relay is used in conjunction with the tested relay.
|Title||:||Seventh International Conference on Developments in Power System Protection, 9-12 April, 2001|
|Author||:||Institution of Electrical Engineers, CIGRE British National Committee|
|Publisher||:||Inspec/Iee - 2001-01-01|