Q.3: A 30KVA, 250/750V, 50-Hz, single-phase transformer, the open and short circuit tests data are as following: O.C test: 250 V, 2.3 A, 320 W (L.V. side) S.C. test: 20 V, 40 A, 420 W (H.V. side) i. Obtain the parameters of the equivalent circuit, Find the full-load primary copper loss. Calculate the maximum efficiency at power factor 0.6 lagging. ii. iii. iv. Find the full-load voltage regulation at power factor 0.75 leading.

Q.3: A 30KVA, 250/750V, 50-Hz, single-phase transformer, the open and short circuit tests data are as following: O.C test: 250 V, 2.3 A, 320 W (L.V. side) S.C. test: 20 V, 40 A, 420 W (H.V. side) i. Obtain the parameters of the equivalent circuit, Find the full-load primary copper loss. Calculate the maximum efficiency at power factor 0.6 lagging. ii. iii. iv. Find the full-load voltage regulation at power factor 0.75 leading.

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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