... Impregnation Plant Usage The Vacuum Impregnation Machine (VPI) used for motors, high-tension transformer, water pumps, fans, iron ... Features1. Vacuum impregnation plant is for impregnating dry type transformer windings, rotor/stator of motors and generators under vacuum.2 ... The vacuum impregnation plant is widely used in transformer, motor, generator, wind-turbine generator manufacturing and so on. ...