An Unbalanced DELTA connected load is connected to a 415 V, 50 Hz supply. The line voltages are: VAB = 415-30 V, VBC = 41590 V and VCA = 415-150 V
If the Phase Impedances are : ZAB = 3 – j4 , ZBC = 12 + j5  and ZCA = 8 + j6 .
Determine:
(i) the magnitude and angle of line currents of IA, IB IC;
(ii) the total power PT dissipated by the load in kW;
(iii) the total reactive power QT of the load in kVAr;
(iv) the total apparent power ST of the load in kVA.