ansformer of 40 MVA, 11/66 kV and reactance of 8% are connected to bus A. Another generator 60 MVA, 11 kV alternator with reactance of 12% is connected to bus B. Bus A and B are interconnected through a reactor of 80 MVA, 20% reactance. The transformer is connected delta on the low voltage
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.
Two 50 MVA, 50 hz, 11 kV alternators with
subtransient reactance of 10% and a transformer of
40 MVA, 11/66 kV and reactance of 8% are
connected to bus A. Another generator 60 MVA, 11
kV alternator with reactance of 12% is connected to
bus B. Bus A and B are interconnected through a
reactor of 80 MVA, 20% reactance. The
transformer is connected delta on the low voltage
side and wye grounded on the high voltage side.
Determine the fault level when a symmetrical
three-phase short circuit occurred at the 66 kV side
of the transformer.
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