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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:

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:

Introductory Circuit Analysis (13th Edition)
Introductory Circuit Analysis (13th Edition)
13th Edition
ISBN:9780133923605
Author:Robert L. Boylestad
Publisher:Robert L. Boylestad
Chapter1: Introduction
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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 Short- circuit test Voc = 2400 V Vsc = 48 V loc = 0.25 A Isc = 6.0 A Poc = 50 W Psc = 200 W су The data have been taken by using the connections of open-circuit test and short- circuit test: a)Find the transformer referred to the high-voltage side. equivalent circuit of this b)Find the transformer referred to the low-voltage side equivalent circuit of this c)Calculate the full-load voltage regulation at 0.8 lagging power factor and 0.8 leading power factor What is the efficiency of the transformer at full load with a power factor of 0.8 lagging?
Transcribed Image Text: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 Short- circuit test Voc = 2400 V Vsc = 48 V loc = 0.25 A Isc = 6.0 A Poc = 50 W Psc = 200 W су The data have been taken by using the connections of open-circuit test and short- circuit test: a)Find the transformer referred to the high-voltage side. equivalent circuit of this b)Find the transformer referred to the low-voltage side equivalent circuit of this c)Calculate the full-load voltage regulation at 0.8 lagging power factor and 0.8 leading power factor What is the efficiency of the transformer at full load with a power factor of 0.8 lagging?
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