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7.10 A 250 KVA, 440-volt, three-phase load is to be supplied from a 2,300 volt, three-phase line. Specify the transformers required for: (a) wye-delta connection, and, (b) wye-wye connection. Ans. 1,325:440v, 83.3 KVA; 1,325:254.04; 83.3 KVA 12 (a) What should be the KILOVOLT-AMPERE rating of each transformer in a V-V bank when the three phase balanced load is 50 KVA? (b) If a third transformer is added to complete the delta-delta con- nection, what is the rated capacity of the bank? Compute for the per cent increase in capacity due to the addition of the third transformer. Ans. 28.75; 86.25; 72.5%