A 15 kVA, 6000/415 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 transformer Open-circuit test (low voltage side) Voc = 480V Ioc = 2.1 A Pos = 120 W Short-circuit test (high voltage side) Ve = 150 V %3D Ise = 6.0 A Pe = 180 W a) Illustrate the equivalent circuit of this transformer referred to primary side. b) Illustrate the equivalent circuit of this transformer referred to secondary side. c) Calculate the full-load voltage regulation at 0.85 lagging power factor using exact equation for Vp. Sketch the phasor diagram

A 15 kVA, 6000/415 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 transformer Open-circuit test (low voltage side) Voc = 480V Ioc = 2.1 A Pos = 120 W Short-circuit test (high voltage side) Ve = 150 V %3D Ise = 6.0 A Pe = 180 W a) Illustrate the equivalent circuit of this transformer referred to primary side. b) Illustrate the equivalent circuit of this transformer referred to secondary side. c) Calculate the full-load voltage regulation at 0.85 lagging power factor using exact equation for Vp. Sketch the phasor diagram

Introductory Circuit Analysis (13th Edition)

13th Edition

ISBN:9780133923605

Author:Robert L. Boylestad

Publisher:Robert L. Boylestad

Chapter1: Introduction

Section: Chapter Questions

Problem 1P: Visit your local library (at school or home) and describe the extent to which it provides literature...

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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 15 kVA, 6000/415 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 transformer
Open-circuit test
(low voltage side)
Voc = 480V
Ioe = 2.1 A
Poc = 120 W
Short-circuit test
(high voltage side)
Vse = 150 V
Ise = 6.0 A
Pac = 180 W
a) Illustrate the equivalent circuit of this transformer referred to primary
side.
b) Illustrate the equivalent circuit of this transformer referred to
secondary side.
c) Calculate the full-load voltage regulation at 0.85 lagging power factor
using exact equation for Vp. Sketch the phasor diagram
d) Calculate the efficiency of the transformer at full load with power factor
of 0.85 lagging.

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