Effect of fault occurence in high voltage transmission line

Q.  When a fault occurs in a high voltage transmission line, what happens first?
- Published on 17 Nov 15

a. Circuit breaker operates then the relay.
b. Relay operates and then the circuit breaker.
c. Relay operates, then successively the isolator and the circuit breaker.
d. Isolator operates, then successively the relay and the circuit breaker.

ANSWER: Relay operates and then the circuit breaker.

Related Content

➨ Post your comment / Share knowledge


Enter the code shown above:

(Note: If you cannot read the numbers in the above image, reload the page to generate a new one.)
▲