1. The following measurements were obtained from tests: carried out on a 10-kVA, 2300:230-V, 60-Hz distribution transformer: -Open-circuit test, with the low-potential winding excited: Applied potential difference, Voc = 230 V Current, Ioc 0.45 A = Input power, Poc = 70 W -Short-circuit test, with the high-potential winding excited: Applied potential difference, Vsc =120 V Current, Isc 4.5 A = Input power, Psc = 240 W Winding resistances, measured by dc bridge: = Rhp 5.80 2, R1p = 0.0605 2 (a) Determine the equivalent circuit of the transformer referred to the low- potential side.

1. The following measurements were obtained from tests: carried out on a 10-kVA, 2300:230-V, 60-Hz distribution transformer: -Open-circuit test, with the low-potential winding excited: Applied potential difference, Voc = 230 V Current, Ioc 0.45 A = Input power, Poc = 70 W -Short-circuit test, with the high-potential winding excited: Applied potential difference, Vsc =120 V Current, Isc 4.5 A = Input power, Psc = 240 W Winding resistances, measured by dc bridge: = Rhp 5.80 2, R1p = 0.0605 2 (a) Determine the equivalent circuit of the transformer referred to the low- potential side.

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 3.28MCQ

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