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1. A 3-phase load consumes 90 kW of power at a leading PF of 0.6. Assume a standard frequency of 60 Hz and the load voltage (

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Sol: Given data 30 Load - 90 kk at 0.6 PF Leading frequency t= 6043 Load phase voltage Uph = 120 V Coms) (a) 30 complex power1b) power triangle +8 (lagging po 7 Re - & (Leading of) Imaginary anus p=90kW real axis 53.1301° 8 = 120 KVAR S= 150 Leading,(C) RMS Load current we know 3-phase active power P = 3 Vph Iph coso .: 90k =3*120 * Iph * 0.6 gok Iph = - 3+120*0.6 Iph = 41

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