A 3-phase 10OOKVA, 11000/416 transformer is delta-connected on the primary and star connected on the secondary. The primary resistance / phase is 1.45 Q and secondary resistance/phase is 0.0006 Q. determine the efficiency on full-load at 0.85 power

A 3-phase 10OOKVA, 11000/416 transformer is delta-connected on the primary and star connected on the secondary. The primary resistance / phase is 1.45 Q and secondary resistance/phase is 0.0006 Q. determine the efficiency on full-load at 0.85 power

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 3.54P: An infinite bus, which is a constant voltage source, is connected to the primary of the...

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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

A 3-phase 10OOKVA, 11000O/416 transformer
is delta-connected on the primary and star
connected on the secondary. The primary
resistance / phase is 1.45 Q and secondary
resistance/phase is 0.0006 Q. determine
the efficiency on full-load at 0.85 power
factor lagging if the iron loss is 1770 W.*
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