Q.3: A 18kVA, 200/600V, 50-Hz, single-phase transformer, the open and short circuit tests data are as following: O.C test: 200 V, 3.5 A, 600 W (L.V. side) S.C. test: 15 V, 30 A, 400 W (H.V. side) i. Obtain the parameters of the equivalent circuit, ii. Find the full-load primary copper loss. iii. Calculate the efficiency of 90% of full-load at power factor 0.75 leading. Find the full-load voltage regulation at power factor 0.5 leading. iv.

Q.3: A 18kVA, 200/600V, 50-Hz, single-phase transformer, the open and short circuit tests data are as following: O.C test: 200 V, 3.5 A, 600 W (L.V. side) S.C. test: 15 V, 30 A, 400 W (H.V. side) i. Obtain the parameters of the equivalent circuit, ii. Find the full-load primary copper loss. iii. Calculate the efficiency of 90% of full-load at power factor 0.75 leading. Find the full-load voltage regulation at power factor 0.5 leading. iv.

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 3.9P

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