Two 6600/ 250 V transformers have the following short circuited characteristics:
Applied voltage 200 V, current 30 A, power input 1200 W for one of the transformers; the corresponding data for other transformer being 120 V, 20 A and 1500 W. All the values are measured on the h.v side and with the l.v terminals short-circuited. Find the current and power factor of each transformer when working in parallel with each other on the high and low voltage side and taking load of 300 kW at power factor of 0.8 lagging from the high voltage bus-bar.
Ans 27.7 A 0.62 lag, 30.8 A 0.915 lag
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