1) 10 kVA, single-phase, 2400-V:120-V, 60 Hz transformer has an equivalent impedance referred to LV side of 0.01 + j0.09 Ω. This transformer has a core loss of 100 W at rated voltage. When rated current is applied to the 2400-V winding, the exciting current in that winding is found to be 0.2 A. a. Find the full-load regulation of this transformer at a power factor of 0.8 lagging. b. Find the efficiency of this transformer at full load, 0.8 power factor lagging. c. If standard open-circuit and tests were performed on this transformer, what would be the measured values of these tests?
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.
1) 10 kVA, single-phase, 2400-V:120-V, 60 Hz transformer has an equivalent impedance referred to
LV side of 0.01 + j0.09 Ω. This transformer has a core loss of 100 W at rated voltage. When rated
current is applied to the 2400-V winding, the exciting current in that winding is found to be 0.2 A.
a. Find the full-load regulation of this transformer at a power factor of 0.8 lagging.
b. Find the efficiency of this transformer at full load, 0.8 power factor lagging.
c. If standard open-circuit and tests were performed on this transformer, what would be the measured
values of these tests?
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