Q.In distance protection, the relay measures

  • ANegative sequence impedance of the line from relay up to the fault point. 
  • BPositive sequence impedance of the line from relay up to the fault point.
  • CSelf-impedance of the line from relay up to the fault point.
  • DZero sequence impedance of the line from relay up to the fault point.
Correct Answer : (B)

Positive sequence impedance of the line from relay up to the fault point.

Hints :

In distance protection, the relay measures Positive sequence impedance of the line from relay up to the fault point.

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