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A star-connected alternator whose neutral point is solidly grounded, has an open circuit voltage of 14KV....

A star-connected alternator whose neutral point is solidly grounded, has an open circuit voltage of 14KV. The positive, negative and zero sequence impedance are j12, j4 and j2.4ohms/phase respectively. A single line to earth fault occurs on phase 'a' through a resistive object of resistance 0.8 ohms. Find
a) fault current
b) phase voltage of 'b' at the point of fault.

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Answer #1

Resistance 0.82 Given: Positive Impedance = j12r Negative Impedanie: 342 Zero Impedance: 32.4% Circuit at during Facile .:. I

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