hree single-phase transformers, each rated at 12 kVA, 120/240 V, 60 Hz, are connected to form a three-phase, step-up, Y/A connection. The parameters of each transformer are R, = 133.5 mR, X , = 201 ma, R, = 39.5 mR, X, = 61.5 mn, R,, = 240 R, and X,, = 290 R. What are the nominal voItage, current, and power ratings of the three-phase transformer. When it delivers the rated load at the rated voltage and 0.8 pf lagging, determine the line voltages, the line currents, and the efficiency of the transformer
Three-Phase Transformers
Three-segment transformers are a type of transformer used to transform voltages of electrical systems into three ranges. Two type transformers are shell-type transformer and core type transformer. In brief, it could be described because of the exquisite kinds of configurations.
Transformer
Ever since electricity has been created, people have started using it in its entirety. We see many types of Transformers in the neighborhoods. Some are smaller in size and some are very large. They are used according to their requirements. Many of us have seen the electrical transformer but they do not know what work they are engaged in.
Three single-phase transformers, each rated at 12 kVA, 120/240 V, 60 Hz, are connected
to form a three-phase, step-up, Y/A connection. The parameters of each
transformer are R, = 133.5 mR, X , = 201 ma, R, = 39.5 mR, X, = 61.5 mn, R,, =
240 R, and X,, = 290 R. What are the nominal voItage, current, and power ratings
of the three-phase transformer. When it delivers the rated load at the rated
voltage and 0.8 pf lagging, determine the line voltages, the line currents, and the
efficiency of the transformer
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