4_ What is the buried delta winding transformer ?!
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
![9 © 18:32
->
1 For an unbalanced load connected to a yy
transformer, what would be the form/ shape of the
output voltage at the secondary in term of phase
voltage and line voltage.
2_ Which connection is more stable ( mechanically)
in case of short circuit , yy or Dy.
3_ What is the voltage impedance of the
transformer? And for what purposes we could use
it ?!
4_ What is the buried delta winding transformer ?!
5_ Consider the following scenario :
You are a site engineer in a power station, and
you have an old transformer that is yyy connected
transformer ( unearthed ), that is heavily loaded,
except the actual connected load is about 75% of the
transformer rating ?! What actions could you take in
order to solve such case ?!
6_ In the same station of part 5, another transformer
with Dy11 connection is used, you were asked to
prepare a maintenance report for this transformer
due to the continuous failure of the transformer
insulation, and told that you have to pick one of the
following transformer to replace it : Dy1, Dy11, Dy5 .
6.1_ what should the maintenance report
comprise ?!
6.2_ what is/are the main differences between
the previously mentioned transformers?!
דע הגשה יום ג', 1...
ה ה שלך
h.w.1 power system lab.pdf
PDF
הגשה
II](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F893bfd41-b415-4e28-9d57-65d45c7f4300%2Fb0781d7d-9544-4d00-ad07-9d4b3bcabd70%2Fca1s06o_processed.jpeg&w=3840&q=75)
Transcribed Image Text:9 © 18:32
->
1 For an unbalanced load connected to a yy
transformer, what would be the form/ shape of the
output voltage at the secondary in term of phase
voltage and line voltage.
2_ Which connection is more stable ( mechanically)
in case of short circuit , yy or Dy.
3_ What is the voltage impedance of the
transformer? And for what purposes we could use
it ?!
4_ What is the buried delta winding transformer ?!
5_ Consider the following scenario :
You are a site engineer in a power station, and
you have an old transformer that is yyy connected
transformer ( unearthed ), that is heavily loaded,
except the actual connected load is about 75% of the
transformer rating ?! What actions could you take in
order to solve such case ?!
6_ In the same station of part 5, another transformer
with Dy11 connection is used, you were asked to
prepare a maintenance report for this transformer
due to the continuous failure of the transformer
insulation, and told that you have to pick one of the
following transformer to replace it : Dy1, Dy11, Dy5 .
6.1_ what should the maintenance report
comprise ?!
6.2_ what is/are the main differences between
the previously mentioned transformers?!
דע הגשה יום ג', 1...
ה ה שלך
h.w.1 power system lab.pdf
PDF
הגשה
II
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