Question

A three-phase load is supplied from a 2.4-kV:460-V, 150-kVA transformer whose equivalent series impedance is 0.038 j0.135 per unit on its own base. The load voltage is observed to be 438 V line-line, and it is drawing 95 kW at unity power factor. Calculate the voltage at the high voltage side of the transformer. Perform the calculations on a 460-V, 100-kVA base.

Answer 1

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Step-by-step explanation:

Given that:

A three-phase load is supplied from a 2.4-kV:460-V, 150-kVA transformer whose equivalent series impedance is 0.038 j0.135 per unit on its own base. The load voltage is observed to be 438 V line-line, and it is drawing 95 kW at unity power factor. Calculate the voltage at the high voltage side of the transformer. Perform the calculations on a 460-V, 100-kVA base.

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