A 15-KVA, 2400/240-V transformer is to be tested to determine its excitation branch components, its series impedances and its voltage regulation. The following test data have been taken from the primary side of the transformer: Open- circuit test Voc = 2400 V loc = 0.25 A Poc = 50 W Short-circuit test Vsc = 48 V Isc = 6.0 A Psc = 200 W Pg103 The data have been taken by using the connections of open-circuit test and short-circuit test a. Find the equivalent circuit of this transformer referred to the high-voltage side. b. Find the equivalent circuit of this transformer referred to the low-voltage side. c. Calculate the full-load voltage regulation at 0.8 lagging power factor and 0.8 leading power factor. d. What is the efficiency of the transformer at full load with a power factor of 0.8 lagging?

A 15-KVA, 2400/240-V transformer is to be tested to determine its excitation branch components, its series impedances and its voltage regulation. The following test data have been taken from the primary side of the transformer: Open- circuit test Voc = 2400 V loc = 0.25 A Poc = 50 W Short-circuit test Vsc = 48 V Isc = 6.0 A Psc = 200 W Pg103 The data have been taken by using the connections of open-circuit test and short-circuit test a. Find the equivalent circuit of this transformer referred to the high-voltage side. b. Find the equivalent circuit of this transformer referred to the low-voltage side. c. Calculate the full-load voltage regulation at 0.8 lagging power factor and 0.8 leading power factor. d. What is the efficiency of the transformer at full load with a power factor of 0.8 lagging?

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 3.5MCQ: For an ideal 2-winding transformer, an impedance Z2 connected across winding 2 (secondary) is...

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