B/ A 50 KVA, 2300/230 V, 60 11z transformer has a high voltage 0.6502 and a low-voltage winding resistance of 0.0065 2. Labora following results: Open circuit test: V = 230 V, 1-5.7A, P = 190 W Short circuit test: V-41.5 V, 1-21.7 A, P-No wattmeter was used. (2) Compute the value of primary voltage needed to give rated secc transformer is connected as a step-up one and is delivering 50 KVA

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 3.33P: Consider the three single-phase two-winding transformers shown in Figure 3.37. The high-voltage...
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B/ A 50 KVA, 2300/230 V, 60 11z transformer has a high voltage winding resistance of
0.6502 and a low-voltage winding resistance of 0.0065 22. Laboratory tests showed the
following results:
Open circuit test: V = 230 V, 1=5.7A, P = 190 W
Short circuit test: V-41.5 V, 1-21.7 A, P-No wattmeter was used.
(2) Compute the value of primary voltage needed to give rated secondary voltage when the
transformer is connected as a step-up one and is delivering 50 KVA at a power factor of 0.8
lagging. (b) Compute the efficiency under conditions of part (a).
Transcribed Image Text:B/ A 50 KVA, 2300/230 V, 60 11z transformer has a high voltage winding resistance of 0.6502 and a low-voltage winding resistance of 0.0065 22. Laboratory tests showed the following results: Open circuit test: V = 230 V, 1=5.7A, P = 190 W Short circuit test: V-41.5 V, 1-21.7 A, P-No wattmeter was used. (2) Compute the value of primary voltage needed to give rated secondary voltage when the transformer is connected as a step-up one and is delivering 50 KVA at a power factor of 0.8 lagging. (b) Compute the efficiency under conditions of part (a).
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