A 900-VA 230/115-V transformer has been tested to determine its equivalent circuit. The results of thetests are shown below. VOC = 230 V IOC = 0.45 A POC = 30 W VSC = 19.2 V ISC = 8.9 A PSC = 42.5 W All data given were taken from the primary side of the transformer. (a) Find the equivalent circuit of this transformer referred to the low-voltage side of the transformer. Rc = v omh Xm`= v ohm Req`= v ohm Xeq`= v ohm (b) Find the transformer's voltage regulation at rated conditions and (1) 0.8 PF lagging, VR%= v % (2) 1.0 PF, VR= v % (3) 0.8PF leading. VR%=

A 900-VA 230/115-V transformer has been tested to determine its equivalent circuit. The results of thetests are shown below. VOC = 230 V IOC = 0.45 A POC = 30 W VSC = 19.2 V ISC = 8.9 A PSC = 42.5 W All data given were taken from the primary side of the transformer. (a) Find the equivalent circuit of this transformer referred to the low-voltage side of the transformer. Rc = v omh Xm`= v ohm Req`= v ohm Xeq`= v ohm (b) Find the transformer's voltage regulation at rated conditions and (1) 0.8 PF lagging, VR%= v % (2) 1.0 PF, VR= v % (3) 0.8PF leading. VR%=

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 900-VA 230/115-V transformer has been tested to determine its equivalent circuit. The results of thetests are shown below.
VOC = 230 V
IOC = 0.45 A
POC = 30 W
VSC = 19.2 V
ISC = 8.9 A
PSC = 42.5 W
All data given were taken from the primary side of the transformer.
(a) Find the equivalent circuit of this transformer referred to the low-voltage side of the transformer.
Rc =
v omh Xm`=
v ohm
Reg`=
v ohm Xeg`=
v ohm
(b) Find the transformer's voltage regulation at rated conditions and (1) 0.8 PF lagging,
VR%=
v %
(2) 1.0 PF,
VR=
v %
(3) 0.8PF leading.
VR%=

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