A three phase Y connected system YY has a line voltage of 48

A three -phase Y -connected system (Y-Y) has a line voltage of 480V_rms and a line current of 3A_rms.Determine: The phase voltage The phase current

Ans)

Given Line Voltage VL=480 V

Line current IL=3 A

a)Phase voltage Vph=VL/sqrt(3)=480/sqrt(3)=480/1.732

Vph=277.128 V

b) Phase current Iph=IL in start connected system

so Iph=3 A