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.

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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.
Transcribed Image Text: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.
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