Acutran VPI Process

Vacuum Pressure Impregnation is a process where Acutran completely seals a coil thru pressure and a resin.

The process are as follows:

  • Vacuum Pressure Impregnation for TransformersCoil(s) are placed in a vacuum chamber and a dry vacuum cycle takes place. Drawing all of the air and moisture out of the coil windings. Air pockets over time can lead to insulation deterioration.
  • A resin is introduced into the chamber and a wet pressure cycle forces the resin into the coil(s) layers. This allows a complete saturation of the entire winding.
  • Then the coil(s) are baked out to seal the resin forming a hard protection around the windings and insulation. 

The benefits of a Vacuum Pressured Impregnation:

  • Improved dielectrics allowing a higher resistance to ground failures
  • Greater Mechanical Strength
  • Seals Windings against moisture and foreign contaminants
  • Improves heat dissipation
  • Improved Corona and/or partial discharge levels


For more information about our (VPI) Vacuum Pressure Impregnation Process call (724) 452-4130 or click to contact us.