Question

Arrange the following statements :
• [A.] Abnormal impedance appears on transmission line
• [B.] Relay comparator detects deviation from set value
• [C.] Relay output contacts close
• [D.] Trip coil of circuit breaker is energised
• [E.] Breaker contacts interrupt fault current Choose the correct answer from the options given below :

• A. A, B, C, D, E
• B. A, C, B, D, E
• C. B, A, C, D, E
• D. C, B, A, D, E

Hint:

Protection sequence: \[ \text{Fault Detection} \rightarrow \text{Relay Operation} \rightarrow \text{Trip Coil Energization} \rightarrow \text{Breaker Isolation} \]

Answer 1

The Correct Option is A