VPI (Vacuum Pressure Impregnation) technology is used to insulate electrical coil windings or seal porosity.
Vacuum impregnation is the process that seals components without changing dimensional or functional characteristics.
The impregnation part of the process is replacing the void with a durable and stable material suitable for field use.
Advantages of fully impregnated coils:
- Better heat dissipation
- Longer insulation life
- Less susceptible to cracking
- Improved resistance to moisture and chemicals
- Reduction of coil movement
- Improved mechanical strength and coil rigidity
- Deeper resin penetration
- Improves heat transfer and provides greater bond strength
- Protects against moisture, dirt, and corrosive chemicals
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