The figure represents the equivalent circuit of a single-phase transformer, if after doing the respective tests the following values have been obtained: R1 = R'2 = 0.08 Q X1 = X'2 = 0.2 O Re = 1000 Q; Xm = 400 Q It is supplied to the load Z' at 240 V, 6 kVA, with a power factor of 0.85 lagging at nominal voltage. Assuming the output voltage as reference to V'2 = 240 / 0°. Calculate: a) Calculate the efficiency of the circuit b) Calculate the apparent, active and reactive power of the load c) Draw the phasor diagram of the voltages and currents R, X, R'2 X'2 LFe = E'2 V'2 Re Xm
The figure represents the equivalent circuit of a single-phase transformer, if after doing the respective tests the following values have been obtained: R1 = R'2 = 0.08 Q X1 = X'2 = 0.2 O Re = 1000 Q; Xm = 400 Q It is supplied to the load Z' at 240 V, 6 kVA, with a power factor of 0.85 lagging at nominal voltage. Assuming the output voltage as reference to V'2 = 240 / 0°. Calculate: a) Calculate the efficiency of the circuit b) Calculate the apparent, active and reactive power of the load c) Draw the phasor diagram of the voltages and currents R, X, R'2 X'2 LFe = E'2 V'2 Re Xm
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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