Two three phase transformers operating in parallel to feed three loads , load 1 ( 300A ) , load 2 ( 400A ) , load 3 ( 500A ) . Ammeter A ( 150 A ) , Ammeter B ( 50 A ) , These transformers were ideal , And the voltage is on the secondary side of the second transformer ( 11KV ) , apparent power on the first transformer ( 30MVA ) , The power factor for all loads is equal ( 0.9lag ) .

150A A 50 A 0.9 S, = 3. MVA II KV 300 500