Question: A Y- Î three-phase transformer is connected to a 60-kVA load with 0.85 power factor (leading) through a feeder whose impedance is 0.05 + j0.1

A Y- Î” three-phase transformer is connected to a 60-kVA load with 0.85 power factor (leading) through a feeder whose impedance is 0.05 + j0.1 Î© per phase, as shown in Fig. 13.138. Find the magnitude of:
(a) The line current at the load,
(b) The line voltage at the secondary side of the transformer,
(c) The line current at the primary side of the transformer.

005 j0.1 Balanced 240V oad 0.05 j0.1 60 kVA 0.85 pf leading 2640 V 0.05 j0.1

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a At the load V L 240 V V AB V AN V L 3 13856 V Since S 3 V L I L then I L 60000240 3 14434 A b ... View full answer

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