B- the instrument readings obtained from open and short-circuit tests on 10kVA, 450/120V, 50Hz transformer are: O.C. test: V₁ = 120V; I₁= 4.2A; W₁ = 80W; W₁ and I were read on the low-voltage side. S.C. test: V₁ = 8.5V; 1₁-20A; W₁ = 100W with low voltage winding short-circuited compute: 1- the equivalent circuit constants referred to high voltage side. 2- efficiency and voltage regulation for full-load at 0.8 P.F. lagging. 3- the voltage to be applied to the high voltage side on full-load at 0.8 power factor lag when the secondary load voltage is 120V. Luoltage:

B- the instrument readings obtained from open and short-circuit tests on 10kVA, 450/120V, 50Hz transformer are: O.C. test: V₁ = 120V; I₁= 4.2A; W₁ = 80W; W₁ and I were read on the low-voltage side. S.C. test: V₁ = 8.5V; 1₁-20A; W₁ = 100W with low voltage winding short-circuited compute: 1- the equivalent circuit constants referred to high voltage side. 2- efficiency and voltage regulation for full-load at 0.8 P.F. lagging. 3- the voltage to be applied to the high voltage side on full-load at 0.8 power factor lag when the secondary load voltage is 120V. Luoltage:

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 3.26P: A bank of three single-phase transformers, each rated 30MVA,38.1/3.81kV, are connected in Y- with a...

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