2. A single-phase transformer has a rating of 100KVA, 7200V/600V, 60HZ. a. If it is reconnected as an autotransformer having a ratio of 7800/7200V, calculate the load it can carry. What is the percent increase in kVA capacity of the transformer? b. How should the transformer terminals (H1, H2, X1, X2) be connected? c. If it is reconnected again as an autotransformer having a ratio of 6.6kV/600V, what load can it carry and how should the connections be made?
2. A single-phase transformer has a rating of 100KVA, 7200V/600V, 60HZ. a. If it is reconnected as an autotransformer having a ratio of 7800/7200V, calculate the load it can carry. What is the percent increase in kVA capacity of the transformer? b. How should the transformer terminals (H1, H2, X1, X2) be connected? c. If it is reconnected again as an autotransformer having a ratio of 6.6kV/600V, what load can it carry and how should the connections be made?
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 3.57P: A two-winding single-phase transformer rated 60kVA,240/1200V,60Hz, has an efficiency of 0.96 when...
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Topic: VARIOUS TYPES OF TRANSFORMERS
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