1. Exciter and rotor winding are isolated from earth, so how can you detect an earth fault in the rotor circuit? 2. Mark the protection zone for the differential relay, which relay protects if the fault appears outside this zone.
1. Exciter and rotor winding are isolated from earth, so how can you detect an earth fault in the rotor circuit? 2. Mark the protection zone for the differential relay, which relay protects if the fault appears outside this zone.
Chapter14: Phase Failure Relays
Section: Chapter Questions
Problem 1SQ: What is the purpose of phase failure relays?
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