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  3. 4 hw1 q4 problem 34 an industrial plant consists of...

Question: 4 hw1 q4 problem 34 an industrial plant consists of...

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4. HW1 Q4 Problem 3.4 An industrial plant consists of several 60 Hz single-phase motors with low power factor. The plant absorbs 600 kW with a power factor of 0.75 lagging from the substation bus. The supply voltage is 12.47 kV. The power factor can be improved by connected a capacitor in parallel with the supply or by using a synchronous motor, which generates reactive power. Analyze both of these cases independently: (a) Find the required kVAR rating of a capacitor connected across the load to raise the power factor to 0.95 lagging. (b) Assuming a synchronous motor rated at 250 hp, with an 80% efficiency is operated from the same bus at rated conditions and a power factor of 0.85 leading, calculate the resultant supply power factor.

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