A balanced three-phase star-connected load draws power from a 440 V supply. The two connected wattmeters, W1 and W2, indicate 5 kW and 1200 W. Calculate the total power.

A balanced three-phase star-connected load draws power from a 440 V supply. The two connected wattmeters, W1 and W2, indicate 5 kW and 1200 W. Calculate the total power.

Right Answer is:

6,200 W

SOLUTION

The sum of two wattmeters gives the total power consumption in the three-phase load i.e

Total Power = P1 + P2

Reading of wattmeter 1

W1 = 5 kW = 5000 watts

Reading of wattmeter 2

W2 = 1200 watts

Total power = 5000 + 1200 = 6200 watts

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