VPI System Overview
Our Vacuum Pressure Impregnation (VPI) System is a better method than the older method of "dip and bake." It is used for many applications ranging from insulations to sealants. VPI provides 100% solid mass structure, not to mention that solvent varnishes lose 50% to 70% of volume during baking. According to numerous field audits since 1975, VPI has, for all practical purposes, eliminated field failures caused by voltage tracking*.
*EASA, Electrical Apparatus Service Association, Inc.
Benefits
- Strengthens the insulation system and extends service life.
- Eliminates the dead air spaces that cause hot spots within coils.
- Provides a low thermal resistance path that lowers temperatures.
- Creates a repellent to oily substances, moisture, and chemical contaminants.
- Resin becomes a sealant against environmental conditions and creates bonds for good mechanical strength.
- Reduces mechanical vibrations.
- Reduces the audible noise level.
- Enhances the dielectric capability, which allows for higher voltage stress levels without failure.
- Reduces coil movement.
Process
VPI creates a better product in less time and at a lower cost than other available procedures that aim at the same results. With VPI, you will have completely upgraded mechanical strength, a cooler running motor due to superior heat dissipation, and environmental protection.
Media and Links
http://www.vonroll.comDetails: Read more about the resins and varnishes used during the Vacuum Pressure Impregnation (VPI) process.