Global Vacuum Pressure Impregnation (VPI) is the process by which a fully wound electric apparatus stator
or rotor is completely submerged in resin. Through a combination of "dry" and
"wet" vacuum and pressure cycles, the resin is assimilated throughout the
insulation systems. Once thermally processed, the impregnated windings become a
monolithic and homogeneous structure. The resulting benefits are higher
dielectric strength, increased mechanical strength, greater thermal
conductivity, and superior protection against the ingress of water, chemical,
and contaminants.
A properly globally vacuum pressure impregnated winding will have superior characteristics, which will support a longer and more maintenance-free life span. TurboCare's Farmington, NM facility houses one of the largest VPI facilities of its kind in the Western Hemisphere.