Power Protection System MCQ: Different Relays are used to provide protection against

Different Relays are used to provide protection against:

  1. Internal faults
  2. External Faults
  3. Reverse currents
  4. Overvoltage
Correct answer: 1. Internal fault
A differential relay compares the current entering to one end of the section with the current leaving that current. It detects the internal fault of the system.

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