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A three-phase, unity power factor synchronous motor rated at 3200 hp (2400 kW), 327 rpm, 4000 V, and 60 Hz drives a compressor used in a pumping station on the Trans- Canada pipeline. Brushless excitation is provided by a 22.5 kW, 250 V alternator/ rectifier, which is mounted on the shaft between the bearing pedestal and the main rotor. Calculate the approximate fullload current of the 3000 hp motor if it has arn efficiency of 95%. a. b. What is the value of the field resistance?
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Sole iven Thae exut P. 22.5に. Rf

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