A 5 KVA 220/110 transformer has the following parameters. Ri -0.25Ω , Χ -0.75Ω, Reι -720 Ω , Xm1-180 Ω R2= 0.052, X2= 0.18 Q a) Draw the exact transformer equivalent circuit indicating all circuit parameters without referrals. b) Draw the exact transformer equivalent circuit referred to primary indicating all circuit parameters. c) Draw the exact transformer equivalent circuit referred to secondary indicating all circuit parameters. When the transformer delivers 90 % of full load at 0.85 power factor lagging. d) Use the exact equivalent circuit of a) to find input voltage V1. e) Use the exact equivalent circuit transformer of b) or of c) to find the voltage regulation.

A 5 KVA 220/110 transformer has the following parameters. Ri -0.25Ω , Χ -0.75Ω, Reι -720 Ω , Xm1-180 Ω R2= 0.052, X2= 0.18 Q a) Draw the exact transformer equivalent circuit indicating all circuit parameters without referrals. b) Draw the exact transformer equivalent circuit referred to primary indicating all circuit parameters. c) Draw the exact transformer equivalent circuit referred to secondary indicating all circuit parameters. When the transformer delivers 90 % of full load at 0.85 power factor lagging. d) Use the exact equivalent circuit of a) to find input voltage V1. e) Use the exact equivalent circuit transformer of b) or of c) to find the voltage regulation.

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:...

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