A 15.5-kVA, 2200/210-V transformer has circuit parameters referred to the primary side given in below. Rea.P Xeg p RcP XM.P 4.75 N 7.75 O 95 kn 11 kn Answer the following: a) Find the full-load voltage regulation at 0.725 leading PF? b) Find the transformer efficiency at full load with a power factor of 0.9 lagging? c) Assume the transformer to be an ideal transformer and is connected as an auto-transformer load from 210-V source. Find the new-rated kVA of the auto-transformer?

A 15.5-kVA, 2200/210-V transformer has circuit parameters referred to the primary side given in below. Rea.P Xeg p RcP XM.P 4.75 N 7.75 O 95 kn 11 kn Answer the following: a) Find the full-load voltage regulation at 0.725 leading PF? b) Find the transformer efficiency at full load with a power factor of 0.9 lagging? c) Assume the transformer to be an ideal transformer and is connected as an auto-transformer load from 210-V source. Find the new-rated kVA of the auto-transformer?

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 3.63P: A 23/230-kV step-up transformer feeds a three-phase transmission line, which in turn supplies a...

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