Two three phase transformer A and B having the same no-load line voltage ratio 3300/400 V supply a load of 750 KVA at 0.707 power factor lagging when operating in parallel. The rating of A is 500 KVA; its resistance is 2% and reactance is 3%. The corresponding values for B are 250 KVA; 1.5% and 4% respectively. Assuming that both transformers have star connected secondary windings, calculate: (a) The load supplied by each transformer (b) The power factor of each transformer. (c) The secondary line voltage of the parallel circuit

Two three phase transformer A and B having the same no-load line voltage ratio 3300/400 V supply a load of 750 KVA at 0.707 power factor lagging when operating in parallel. The rating of A is 500 KVA; its resistance is 2% and reactance is 3%. The corresponding values for B are 250 KVA; 1.5% and 4% respectively. Assuming that both transformers have star connected secondary windings, calculate: (a) The load supplied by each transformer (b) The power factor of each transformer. (c) The secondary line voltage of the parallel circuit

Power System Analysis and Design (MindTap Course List)

6th Edition

ISBN:9781305632134

Author:J. Duncan Glover, Thomas Overbye, Mulukutla S. Sarma

Publisher:J. Duncan Glover, Thomas Overbye, Mulukutla S. Sarma

Chapter3: Power Transformers

Section: Chapter Questions

Problem 3.63P: A 23/230-kV step-up transformer feeds a three-phase transmission line, which in turn supplies a...

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