Open-circuit, and short-circuit tests were conducted on a 50 kVA, 6 360/240 V, 50 Hz, single- phase transformer in order to find its efficiency. The observations during these tests are: O.C. test; Voltage across primary winding = 6360 V; Primary current =1 A, and Power input 32 kW. S.C. test; Voltage across primary = 180 V; Current in secondary winding 175 A, and Power %3D %3D input 2 kW. Calculate the efficieney of the transformer. when supplying full-load at p.f. of 0.8 lagging.

Open-circuit, and short-circuit tests were conducted on a 50 kVA, 6 360/240 V, 50 Hz, single- phase transformer in order to find its efficiency. The observations during these tests are: O.C. test; Voltage across primary winding = 6360 V; Primary current =1 A, and Power input 32 kW. S.C. test; Voltage across primary = 180 V; Current in secondary winding 175 A, and Power %3D %3D input 2 kW. Calculate the efficieney of the transformer. when supplying full-load at p.f. of 0.8 lagging.

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 3.57P: A two-winding single-phase transformer rated 60kVA,240/1200V,60Hz, has an efficiency of 0.96 when...

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