DOR Electrical Ltd NICEIC
01246 260 055 07970 754 005

Vacuum Pressure Impregnation (VPI)

Vacuum Pressure Impregnation (VPI)

In today’s ever-increasing battle to reduce costs, we have recognised that the VPI (Vacuum Pressure Impregnation) offers valuable benefits to our customers.

VPI is the process of forcing the specialised insulated resin into the winding under vacuum pressure conditions, resulting in a totally capsulated winding.

The winding to be treated is placed in the receiving vessel, sealed and evacuated of air, thus drawing the resin from the adjacent holding tank through the winding until totally submerged. After draining, the winding is stoved at 160 degrees centigrade for curing.

The VPI process can be applied to both existing and new windings, including new motors.

Advantages Of Vacuum Pressure Impregnation Include:

  • Protection Against Hostile Environments Such As:
  • Water
  • Dust
  • Vibration
  • Heat
  • Superior Electrical Protection Against Failure
  • Improved Heat Dissipation
  • Greater Winding Strength

For More Information Or To Speak With Our Electro-Mechanical Engineers,
Call DOR Electrical Ltd Today On: 01246 260 055


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