(c) Obtain the equivalent circuit in per-unit form.(d) Find the full-load copper loss in per-unit form.(e) Determine the per-unit voltage regulation (using the per-unit equivalent circuit from partc) when the transformer delivers 75% full load at 0.6 lagging power factor. P.6The exciting current of a lø, 10 kVA, 2200/220 V, 60 Hz transformer is 0.25 A when measuredon the high-voltage side. Its equivalent impedance is 10.4 + j31.3 2 when referred to the high-voltage side. Taking the transformer rating as base,

Let the base values are, Pbase=10000 VAVbase,H=2200 V=1 pu Vbase,L=220 V=1 pu The value of the…

The exciting curent of a lø, 10 kVA, 2200/220 V, 60 Hz transformer is 0.25 A when measured on the high-voltage side. Its equivalent impedance is 10.4 + j31.3 2 when referred to the high- voltage side. Taking the transformer rating as base,

The exciting curent of a lø, 10 kVA, 2200/220 V, 60 Hz transformer is 0.25 A when measured on the high-voltage side. Its equivalent impedance is 10.4 + j31.3 2 when referred to the high- voltage side. Taking the transformer rating as base,

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 3.14MCQ: The ideal transformer windings are eliminated from the per-unit equivalent circuit of a transformer....

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Concept explainers

Three-Phase Transformers

Three-segment transformers are a type of transformer used to transform voltages of electrical systems into three ranges. Two type transformers are shell-type transformer and core type transformer. In brief, it could be described because of the exquisite kinds of configurations.

Transformer

Ever since electricity has been created, people have started using it in its entirety. We see many types of Transformers in the neighborhoods. Some are smaller in size and some are very large. They are used according to their requirements. Many of us have seen the electrical transformer but they do not know what work they are engaged in.

Question

(c) Obtain the equivalent circuit in per-unit form.
(d) Find the full-load copper loss in per-unit form.
(e) Determine the per-unit voltage regulation (using the per-unit equivalent circuit from part
c) when the transformer delivers 75% full load at 0.6 lagging power factor.

P.6
The exciting current of a lø, 10 kVA, 2200/220 V, 60 Hz transformer is 0.25 A when measured
on the high-voltage side. Its equivalent impedance is 10.4 + j31.3 2 when referred to the high-
voltage side. Taking the transformer rating as base,

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