(b) The primary and secondary windings of a 250 kVA, 132/66 kV, 50 Hz power transformer have resistances of 0.5 N and 0.02 2, respectively. The core loss of this power transformer is 2.5 kW and the power factor of the load is 0.85. (i) Sketch the above power transformer complete and label it. (ii) Determine the type of transformer and its turn ratio. (iii) Calculate the rated current for the both primary and secondary sides. [] (iv) Estimate the efficiency of the transformer under full load.
(b) The primary and secondary windings of a 250 kVA, 132/66 kV, 50 Hz power transformer have resistances of 0.5 N and 0.02 2, respectively. The core loss of this power transformer is 2.5 kW and the power factor of the load is 0.85. (i) Sketch the above power transformer complete and label it. (ii) Determine the type of transformer and its turn ratio. (iii) Calculate the rated current for the both primary and secondary sides. [] (iv) Estimate the efficiency of the transformer under full load.
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 3.63P: A 23/230-kV step-up transformer feeds a three-phase transmission line, which in turn supplies a...
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