A 500 kVA, 7200- 240 V, 60 Hz transformer with a 2.2% impedance was severely damaged as a result of a dead short across the secondary terminals. Determine: a) the short- circuit current in kA; b) the required percent impedance of a replacement transformer that will yield the low- side short- circuit current to 60 kA.
A 500 kVA, 7200- 240 V, 60 Hz transformer with a 2.2% impedance was severely damaged as a result of a dead short across the secondary terminals. Determine: a) the short- circuit current in kA; b) the required percent impedance of a replacement transformer that will yield the low- side short- circuit current to 60 kA.
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 3.1P: (a) An ideal single-phase two-winding transformer with turns ratio at=N1/N2 is connected with a...
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