Problem 3 Consider a 100 kVA, 7200/240 V, 60 Hz transformer. Assume that the open-circuit and short-circuit tests were performed on the transformer and that the following data were obtained: Voltmeter Ammeter Wattmeter ii. iii. Open-Circuit Test (on Primary) Voc=7200 V Loc=0.65 A Poc=425 W Short-Circuit Test (on Primary) Vc=250V Isc=13.889 A Psc = 1420W Also assume that the transformer operates at full load with a 0.90 lagging power factor. If the given power factor belongs to the load, not to the transformer, determine the following: i. The equivalent impedance, resistance, and reactance of the transformer all referred to the primary side Total losses, including the copper and core losses, at full load The efficiency of the transformer

Problem 3 Consider a 100 kVA, 7200/240 V, 60 Hz transformer. Assume that the open-circuit and short-circuit tests were performed on the transformer and that the following data were obtained: Voltmeter Ammeter Wattmeter ii. iii. Open-Circuit Test (on Primary) Voc=7200 V Loc=0.65 A Poc=425 W Short-Circuit Test (on Primary) Vc=250V Isc=13.889 A Psc = 1420W Also assume that the transformer operates at full load with a 0.90 lagging power factor. If the given power factor belongs to the load, not to the transformer, determine the following: i. The equivalent impedance, resistance, and reactance of the transformer all referred to the primary side Total losses, including the copper and core losses, at full load The efficiency of the transformer

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 3.16P: A single-phase, 50-kVA,2400/240-V,60-Hz distribution transformer has the following parameters:...

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