A 500-kVA, 3-phase, 50-Hz transformer has a voltage ratio (line voltages) of 33/11-kV. The resistances per phase are: high voltage 35 , low voltage 0.876 £ and the iron loss is 3050 W. Calculate the ff. parameters if the transformer is (a) delta-delta connected Parameters: 1. Primary phase voltage 2. Secondary phase voltage 3. Ratio of Transformation 4. Primary phase current 5. Secondary phase current 6. Equivalent resistance per phase referred to the primary 7. Equivalent resistance per phase referred to the secondary 8. Full Load copper loss 9. Full Load core loss | 10. Efficiency at full load 0.8 pf

A 500-kVA, 3-phase, 50-Hz transformer has a voltage ratio (line voltages) of 33/11-kV. The resistances per phase are: high voltage 35 , low voltage 0.876 £ and the iron loss is 3050 W. Calculate the ff. parameters if the transformer is (a) delta-delta connected Parameters: 1. Primary phase voltage 2. Secondary phase voltage 3. Ratio of Transformation 4. Primary phase current 5. Secondary phase current 6. Equivalent resistance per phase referred to the primary 7. Equivalent resistance per phase referred to the secondary 8. Full Load copper loss 9. Full Load core loss | 10. Efficiency at full load 0.8 pf

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 3.26P: A bank of three single-phase transformers, each rated 30MVA,38.1/3.81kV, are connected in Y- with a...

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