Transformer Regulation Homework: Hughes Electrical Book

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SUMMARY

The discussion focuses on solving transformer regulation equations using the Hughes Electrical Book. The user confirms the correctness of their calculations, specifically noting that the primary rated current must be calculated as 200 x 1000 / sqrt(3) / 415. Additionally, they clarify that the equivalent resistance referred to the primary side must be adjusted by subtracting 0.01 to account for added resistance. The conversation concludes with a positive affirmation of the user's approach to the problem.

PREREQUISITES
  • Understanding of transformer regulation equations
  • Familiarity with the Hughes Electrical Book
  • Knowledge of primary and secondary side resistance calculations
  • Basic proficiency in electrical engineering concepts
NEXT STEPS
  • Study transformer regulation equations in detail
  • Learn about calculating equivalent resistance in transformers
  • Explore the implications of primary rated current in transformer design
  • Review the Hughes Electrical Book for additional examples and explanations
USEFUL FOR

Electrical engineering students, professionals working with transformers, and anyone seeking to deepen their understanding of transformer regulation and calculations.

billyray
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Homework Statement


upload_2018-3-11_20-38-40.png
[/B]

Homework Equations


I have used the Hughes electrical book for the equations to solve the above. I have very little notes from college to help. I have found these equations fit and am confident on it but not 100% can anyone who knows transformers please advise if they think i am right or wrong on the equations. i am finding it hard but have done my best.

The Attempt at a Solution


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The a part it is correct. Part b 2% of 415 is o.k. but in the regulation equation you have to employ the primary rated current: 200x1000/sqrt(3)/415. When you'll find R subtract 0.01 and this will be the added resistance at primary side[415 V].Then you have to calculate this resistance as if it is at secondary side.
 
how comes I need to divide 200x 1000 by square route of three?
 
Do you mean R as equivalent resistance referred to primary?
 
is this better?
 

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o.k.
 
you mean its correct?
 
yes.
 
Thanks so much Babadag

I like your cat by the way.
 
  • #10
Thank you, billyray. My cat is called Pitsush. She is 10 years old and very intelligent
 

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