B w Let us now consider A the effect of placing point x directly on the one of b*w three lines (x=>B) C cW VBx=0→PB=0 P=P+p DABiaAdt UcBCC =OOAN-UBN iadt +C(Uc -UBN)icdt TJo T TJo DANladt+Dawicdt-DBN (a+ioc )dt L(UANiA +uBvibB+Cicc)dt bB (The sum of the average powers taking by the three-phase loads.Let us now consider the effect of placing point x directly on the one of three lines.(x=>B) W   W   W   • a b c C A B ZA ZB ZC N x = 0 → = 0 • V Bx PB i dt T i dt T P P P T aA CB cC T A C  AB  = + = + 0 0 1 1   i dt T i dt T T BN aA CN BN cC T  AN  = − + − 0 0 ( ) 1 ( ) 1     i dt i dt i i dt T CN cC BN aA cC T AN aA ( ) 1 0 = + − +     i i i dt T BN bB CN cC T AN aA ( ) 1 0 =  + +  bB − i (The sum of the average powers taking by the three-phase loads.)