a) Draw a reactance diagram for the circuit. b)Determine the voltage at the primary side of the transformer when it is star connected. c) Determine also the voltage at the primary when the primary side of the transformer is delta connected
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.
A three-phase two-winding transformer rated 1200 MVA, 14kV/162kV
has a leakage reactance of j0.10 pu. A three-phase load operating under
balanced positive phase sequence conditions on the secondary side
absorbs 1000 MVA at 0.9pf lagging with a terminal voltage of 161kV.
Use the given information to answer the following questions:
a) Draw a reactance diagram for the circuit.
b)Determine the voltage at the primary side of the transformer when
it is star connected.
c) Determine also the voltage at the primary when the primary side of
the transformer is delta connected.
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