Ausin pipeline material&equipment co., ltd.
Ausin pipeline material&equipment co., ltd.

How does the VPI equipment work?

Nov 30, 2025

Table of Content [Hide]

    In a vacuum environment, the insulating varnish is degassed, and then the pressure difference is used to transport the insulating varnish to the impregnation tank of the product for impregnation (special insulating medium needs to be pumped). Because in a vacuum environment, the insulating varnish can be fully immersed in the gap of the product coil and then immersed in the product. Applying a certain pressure of air (or nitrogen) to the varnish surface further enhances the wetting ability of the insulating paint and greatly improves the insulation strength of the coil.


    Daniel Richardson

    Senior Power Systems Engineer (PE)

    With 18 years dedicated to electrical infrastructure design, I specialize in advanced industrial power quality solutions. As a certified Professional Engineer, I have successfully led high-stakes substation projects, serving major Fortune 500 clients across Asia-Pacific.

    We use cookies to offer you a better browsing experience, analyze site traffic and personalize content. Part of the tracking is necessary to ensure SEO effectiveness,
    By using this site, you agree to our use of cookies. Visit our cookie policy to learn more.
    Reject Accept