A 50-kVA 4400/220-V 60-Hz single-phase transformer takes 10.8 A and 544 W at 120 V in a short-circuit test performed on the high-voltage side. Calculate the voltage to be applied to the high-voltage side on full load at a power factor 0.8 lagging when the secondary terminal voltage is 220 V.

A 50-kVA 4400/220-V 60-Hz single-phase transformer takes 10.8 A and 544 W at 120 V in a short-circuit test performed on the high-voltage side. Calculate the voltage to be applied to the high-voltage side on full load at a power factor 0.8 lagging when the secondary terminal voltage is 220 V.

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 3.10P: A single-phase step-down transformer is rated 13MVA,66kV/11.5kV. With the 11.5 kV winding...

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Concept explainers

Single Phase Transformer

A single-phase transformer is a type of power transformer. It is an electrical device that accepts converts the single phase alternating power into single phase alternating power. In this power conversion the voltage is stepped up or down. If the voltage is stepped up, the current will be stepped down and if the voltage is stepped down, the current will be stepped up.

Question

A 50-kVA 4400/220-V 60-Hz single-phase transformer takes 10.8 A and 544 W
at 120 V in a short-circuit test performed on the high-voltage side. Calculate the
voltage to be applied to the high-voltage side on full load at a power factor 0.8
lagging when the secondary terminal voltage is 220 V.

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