8 12-1 Three-phase voltages D 44 y. sin ot B,= y sin(O-120°) B S nsin(ar-240°) =nsin(ot+120°) D ⊥4 BBY CC A=V∠0° VBF=∠-120° Icc,=V∠+120° BB
§12-1 Three- phase voltages V t AA' = m sin sin( 120 ) ' BB =Vm t − sin( 120 ) sin( 240 ) ' = + = − V t V t m CC m t AA' BB' CC' ' = 0 • V AA V ' = − 120 • V BB V ' = + 120 • V CC V V AA' • V CC' • V BB' • • • • A B ' C ' B C ' A N S