1) A 12 KVA, 480/120 V transformer is tested to determine its equivalent circuit. The test results are as follows: Open circuit test (on the secondary side) VCA 120V ICA = 1,60 A PCA = 38 W. Short circuit test (on primary side) Vcc = 10 V Icc = 10.6 A Pcc = 25W a) Find the equivalent circuit of the transformer referred to the low voltage side. b) Determine the equivalent circuit in per unit.

1) A 12 KVA, 480/120 V transformer is tested to determine its equivalent circuit. The test results are as follows: Open circuit test (on the secondary side) VCA 120V ICA = 1,60 A PCA = 38 W. Short circuit test (on primary side) Vcc = 10 V Icc = 10.6 A Pcc = 25W a) Find the equivalent circuit of the transformer referred to the low voltage side. b) Determine the equivalent circuit in per unit.

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 3.10P: A single-phase step-down transformer is rated 13MVA,66kV/11.5kV. With the 11.5 kV winding...

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