Reference Data
Ohms Law
3-Phase Wye (Balanced Load)

VP = VL/1.73
WWYE = VL2/R = 3(VP2)/R
WWYE = 1.73 VLIL
3-Phase OpenWye (No Neutral)

VPO = VL/2
WOWYE = ½(VL2)/R
WOWYE = 2(VPO2/R)
Definations
For Both Wye and Delta (Balanced Loads)VP = Phase voltage
VL = Line voltage
IP = Phase Current
R = R1 = R2 = R3 =
Resistance of each branch
W = Wattage
3-Phase Wye (Balanced Load)

VP = VL
WDELTA = 3 (VL2)/R
WDELTA = 1.73 VLIL
3-Phase OpenWye (No Neutral)

IPO1 = IPO3 = ILO2
ILO3 = 1.73 IPO1
WODELTA = 2 (VL2/R)
Definations
Wye and Delta EquivalentsW DELTA = 3 WWYE
Wodelta = 2/3 Wdelta
Wowye = ½ Wwye

