Power Circuit of Wye(Y) Delta(Δ) Starter

Power Circuit of Wye(Y) Delta(Δ) Starter 

1. KM3=KM1= closed or main &star contacter close

2.KM/main closed and KM2=KM1=open (in dis state moter runs as generator)

3.MAin & Delta closed and star is open (motor connects in full load)