A three phase ABC system with effective line voltage 500V ha

A three phase, ABC system, with effective line voltage 500V, has a delta connected load for which Z_AB=10angle30 ohm, Z_BC= 25angle0 ohm, Z_CA=20angle(-30) ohm. Obtain the line currents

Solution

Ia= VAB/ZAB =500angle0 /10angle30 = 43.3-25j =>50angle(-30)

Ib= VBC/ZBC = 500angle120/ 25angle0 = -10+17.3j =>20angle120

Ic=VCA/ZCA = 500angle(-120)/20angle(-30)= -25j => 25angle(-90)