6 (H) Application: three-phase power measure mentIn a balanced, three-phase system as shown in Figure P9.26,the load power can be measured by using two watt meters.The power measured by W1

is P1, P1 = Re(Vabla*) and the power measured by W2 is P2, P2 = Re(Vel*). Show that the total real power PT = P1 + P2.