The neutral point of 25MVA, 11kW alternator is grounded through a resistance of 5Ω, the relay...

The neutral point of 25MVA, 11kW alternator is grounded through a resistance of 5Ω, the relay is set of operate when there is an out of balance current of 2A. The CTs used have a ratio of 1000/5. Calculate (neglect resistance of alternator):
i. The percentage of stator winding protected against earth fault.
ii. The minimum value of earthing resistance to protect 95% of the winding.

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