Reference Data

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Ohms Law

3-Phase Wye (Balanced Load)

IP = IL
VP = VL/1.73
WWYE = VL2/R = 3(VP2)/R
WWYE = 1.73 VLIL

3-Phase OpenWye (No Neutral)

IP = ILO
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)

IP = IL /1.73
VP = VL
WDELTA = 3 (VL2)/R
WDELTA = 1.73 VLIL

3-Phase OpenWye (No Neutral)

VP = VL
IPO1 = IPO3 = ILO2
ILO3 = 1.73 IPO1
WODELTA = 2 (VL2/R)

Definations

Wye and Delta Equivalents
W DELTA = 3 WWYE
Wodelta = 2/3 Wdelta
Wowye = ½ Wwye