In a Balanced Three-Phase Load, Each Phase has

Answer: A and B. An equal amount of power and One-third of total power.

In a balanced three-phase load, each phase has an equal amount of power and that is equal to one-third of total power.

Solution

Total power in a three-phase circuit =3V_phI_phcos ∅ =3VIcos ∅

Source is always balanced; therefore, each phase voltage is equal in magnitude, and phase angle displacement is 120°.

V_A=V_B=V_C=V

For a balanced load three-phase load each phase has =Z_A=Z_B=Z_C=Z

Each phase current is 

I_A=I_B=I_C=V/Z

Each phase power is = V_phI_phcos ∅ = VIcos ∅ =1/3×Total power 

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