9. A 3-phase transformer rated at 1,000 kVA, 11/3.3 kV has its primary windings wye-connected and its secondary windings delta-connected. The actual resistances per phase of these windings are: r1 = 0.375 Ω, r2 = 0.095 Ω; and the leakage reactances per phase are: x1 = 9.5 Ω, x2 = 2 Ω. Calculate the voltage at the normal frequency which must be applied to primary terminals in order to obtain full-load current in the windings when the secondary terminals are short-circuited. Also, calculate the power input under these conditions.
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.
9. A 3-phase transformer rated at 1,000 kVA, 11/3.3 kV has its primary windings wye-connected and its secondary windings delta-connected. The actual resistances per phase of these windings are: r1 = 0.375 Ω, r2 = 0.095 Ω; and the leakage reactances per phase are: x1 = 9.5 Ω, x2 = 2 Ω. Calculate the voltage at the normal frequency which must be applied to primary terminals in order to obtain full-load current in the windings when the secondary terminals are short-circuited. Also, calculate the power input under these conditions.
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