Homework Help is Here – Start Your Trial Now!
Engineering
Electrical Engineering
4.- A 20-kVA , 8000 V / 277 V transformer has the following resistances and reactance's: RP = 32Ω RS = 0.05Ω XP = 45Ω XS = 0.06Ω RC = 250 KΩ XM = 30 KΩ The excitation branch impedances are given referred to the high-voltage side of the transformer. a.- Find the equivalent circuit of this transformer referred to the high-voltage side. b.- Assume the transformer is supplying rated load at 277 V and 0.8 pf lagging. Whatis this transformer’s input voltage? (tip: assume the current through XM and RC is very small … negligible)

4.- A 20-kVA , 8000 V / 277 V transformer has the following resistances and reactance's: RP = 32Ω RS = 0.05Ω XP = 45Ω XS = 0.06Ω RC = 250 KΩ XM = 30 KΩ The excitation branch impedances are given referred to the high-voltage side of the transformer. a.- Find the equivalent circuit of this transformer referred to the high-voltage side. b.- Assume the transformer is supplying rated load at 277 V and 0.8 pf lagging. Whatis this transformer’s input voltage? (tip: assume the current through XM and RC is very small … negligible)

Power System Analysis and Design (MindTap Course List)
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 3.16P: A single-phase, 50-kVA,2400/240-V,60-Hz distribution transformer has the following parameters:...
See similar textbooks
icon
Related questions
Question

4.- A 20-kVA , 8000 V / 277 V transformer has the following resistances and
reactance's:
RP = 32Ω RS = 0.05Ω
XP = 45Ω XS = 0.06Ω
RC = 250 KΩ XM = 30 KΩ
The excitation branch impedances are given referred to the high-voltage side of the transformer.
a.- Find the equivalent circuit of this transformer referred to the high-voltage side.
b.- Assume the transformer is supplying rated load at 277 V and 0.8 pf lagging.

Whatis this transformer’s input voltage? (tip: assume the current through XM and RC is very small … negligible)

6 / 8 90% Problem 4 4.-A 20-kVA, 8000 V/ 277 V transformer has the following resistances and reactance's: Rp = 320 Rs = 0.050 Xp = 450 Xs = 0.060 Rc = 250 KO XM = 30 KQ %3D %3D %3D %3D !3D The excitation branch impedances are given referred to the high-voltage side of the transformer. a.- Find the equivalent circuit of this transformer referred to the high-voltage side. b.- Assume the transformer is supplying rated load at 277 V and 0.8 pf lagging. What is this transformer's input voltage? (tip: assume the current through X,M and Re is very small... negligible) The resulting equivalent circuit is 32 2 45 Q 41.79 50.1 2 250 k2 30 k
Transcribed Image Text:6 / 8 90% Problem 4 4.-A 20-kVA, 8000 V/ 277 V transformer has the following resistances and reactance's: Rp = 320 Rs = 0.050 Xp = 450 Xs = 0.060 Rc = 250 KO XM = 30 KQ %3D %3D %3D %3D !3D The excitation branch impedances are given referred to the high-voltage side of the transformer. a.- Find the equivalent circuit of this transformer referred to the high-voltage side. b.- Assume the transformer is supplying rated load at 277 V and 0.8 pf lagging. What is this transformer's input voltage? (tip: assume the current through X,M and Re is very small... negligible) The resulting equivalent circuit is 32 2 45 Q 41.79 50.1 2 250 k2 30 k
Expert Solution
trending now

Trending now

This is a popular solution!

steps

Step by step

Solved in 2 steps with 3 images

SEE SOLUTIONCheck out a sample Q&A here
Blurred answer
Knowledge Booster
Single phase transformer
Learn more about
Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, electrical-engineering and related others by exploring similar questions and additional content below.
Similar questions
  • SEE MORE QUESTIONS
Recommended textbooks for you
Power System Analysis and Design (MindTap Course …
Power System Analysis and Design (MindTap Course …
Electrical Engineering
ISBN:
9781305632134
Author:
J. Duncan Glover, Thomas Overbye, Mulukutla S. Sarma
Publisher:
Cengage Learning
Delmar's Standard Textbook Of Electricity
Delmar's Standard Textbook Of Electricity
Electrical Engineering
ISBN:
9781337900348
Author:
Stephen L. Herman
Publisher:
Cengage Learning
Electricity for Refrigeration, Heating, and Air C…
Electricity for Refrigeration, Heating, and Air C…
Mechanical Engineering
ISBN:
9781337399128
Author:
Russell E. Smith
Publisher:
Cengage Learning
SEE MORE TEXTBOOKS