a three-phase step-down transformer with 150 kVA, 2080/208 V 60 Hz Y / Y connected R1 = 0.45 ohm, X1 = 2.2 ohm, R2 = 4.5 mohm, X2 = 22 mohm, Rc = 10 kohm, Xm = 8 kohms. When installed at 120 kVA, 90 kW back power factor, if the voltage at the load ends is at its nominal value, a) Primary side terminal voltage b) Yield (efficiency) c) Calculate the voltage regulation value?

a three-phase step-down transformer with 150 kVA, 2080/208 V 60 Hz Y / Y connected R1 = 0.45 ohm, X1 = 2.2 ohm, R2 = 4.5 mohm, X2 = 22 mohm, Rc = 10 kohm, Xm = 8 kohms. When installed at 120 kVA, 90 kW back power factor, if the voltage at the load ends is at its nominal value, a) Primary side terminal voltage b) Yield (efficiency) c) Calculate the voltage regulation value?

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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