The primary of a 1000 kVA, 11 / 3.3 kV three-phase transformer is connected in star and the secondary in delta. The resistances per phase of these windings are given as 0.375 Ω for the primary winding, 0.095 Ω for the secondary winding, and the leakage reactances per phase are given as 9.5 Ω for the primary winding and 2 Ω for the secondary winding. Calculate the voltage value and input power that must be applied to the primary when the secondary winding ends of the transformer are short-circuited. (In case of short circuit, the middle arm in the equivalent circuit will be neglected.)
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.
Question 1. The primary of a 1000 kVA, 11 / 3.3 kV three-phase transformer is connected in star and the secondary in delta. The resistances per phase of these windings are given as 0.375 Ω for the primary winding, 0.095 Ω for the secondary winding, and the leakage reactances per phase are given as 9.5 Ω for the primary winding and 2 Ω for the secondary winding. Calculate the voltage value and input power that must be applied to the primary when the secondary winding ends of the transformer are short-circuited. (In case of short circuit, the middle arm in the equivalent circuit will be neglected.)
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