Three –phase asynchronous motor 2 velocity for vent Double-speed three-phase asynchronous motor with special winding for use on industrial fans.
Three-phase asynchronous motor Dual Polarity Two-speed motors with winding only type Dahlander (2 / 4, 4 / 8, 6 / 12 centers) or double coils (2 / 6, 2 / 8, 2 / 12, 4 / 6, 6 / 8 poles)