A two-pole, 50 Hz, 13.8 kV, 10 MVA, star-connected synchronous generator achieves the rated open-circuit voltage at a field current of 842 A. It achieves the rated armature current into a three-phase terminal short circuit for a field current of 226 A. When this generator is connected to a 13.8 kV distribution feeder of negligible impedance and operates at an output power of 8.75 MW at 0.9 power factor lagging, work out the resultant load angle and reactive-power output if the field current is reduced to 842 A, while the shaft-power supplied by the prime mover to the generator remains constant.
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 two-pole, 50 Hz, 13.8 kV, 10 MVA, star-connected synchronous generator achieves the
rated open-circuit voltage at a field current of 842 A. It achieves the rated armature current
into a three-phase terminal short circuit for a field current of 226 A.
When this generator is connected to a 13.8 kV distribution feeder of negligible impedance
and operates at an output power of 8.75 MW at 0.9 power factor lagging, work out the resultant load angle and reactive-power output if the field current is reduced to 842 A, while the shaft-power supplied by the prime mover to the generator remains
constant.
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