Answer / kk

Rotor earth relay have 2
stage. One 4 alarm & other 4
trip. One can check the
bridge o/p voltage(mV) &
compare with comissioning
time value.

Answer / bhuvnesh kumawat

rotor earth fault alarm comes only if our carbon brushes
become earthed. it may be at the time of changing carbon
brushes.

Answer / sujeet kumar

we have to check the status of zero sequence relay..
if its not affected then there is not any earth fault

Answer / alok

rotor both side earth fault wire open and check countinuti
with the help of multimeter at rotor both end.but one side
wire who is grounded must be grounded.

Describe the test procedure to determine the vector group

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