VPI (Vacuum Pressure Impregnated) transformers are vacuum pressure impregnated with a high temperature polyester varnish. VPI ventilated dry type transformers are designed to meet most commercial and industrial applications. VPI transformers provide excellent mechanical and short circuit strength,. They also hold no danger of fire or explosion, nor liquids to leak.

VPI Brochure — Dry Type VPI Brochure

VPI Bulletin