Three 6.6kV generators A,B and C, each of 10% sub-transient reactance and MVA ratings 25, 30 and 15 respectively are interconnected by a bus through current limiting reactors each of 12% reactance based on the machine to which they are connected (Refer figure). A three phase feeder is supplied from the bus bar of generator A at a line voltage of 6.6kV. The feeder has a inductive reactance of 0.15 Ohm per phase. Estimate the maximum MVA that can be fed into a symmetrical short circuit at the end of the feeder by using an equivalent circuit.
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