A 200 MVA 15/200 kVsingle-phase powertransformer has aresistance of 2.40 and areactance of 10.012referred to the highvoltage side. Thevoltage regulationof this transformerfor the secondarywinding currentof 1100A at PF of0.8 lagging isa.5%b.4.01%C. 3.8%

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voltage side. The voltage regulation of this transformer for the secondary

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 200 MVA 15/200 kV
single-phase power
transformer has a
resistance of 2.40 and a
reactance of 10.012
referred to the high
voltage side. The
voltage regulation
of this transformer
for the secondary
winding current
of 1100A at PF of
0.8 lagging is
a.
5%
b.
4.01%
C. 3.8%

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