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Explain two wattmeter method for measurement of 3 - phase power.
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  • In Balanced 3-phase circuit, power can be measured by using 2-watt meters.
  • Let's consider, 2-wattmeter method to measure the power in a star connected balanced 3-phase load as shown in figure below-

     

  • As we know that for a stare connected balanced 3-phase load-
  1. Magnitude of Line Voltage is equal to3

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