The smart thermostat, made Wiser.Learn more
...See what we've been doing in some of our major markets.Find your Location
Access tailored services, 24/7 self-service and expert help. Anywhere, anytime, any project.Discover now
Everything you need to know about our IoT technology backbone.Learn more
Explore our global offerings or select your country from one of our five regions.Global
Découvrez nos offres globales ou sélectionnez votre pays dans l’une de nos cinq régions.
Requests for Vacuum Pressure Impregnation (VPI) on Low Voltage Transformers
Applies to Low Voltage Transformers by SquareD/Schneider Electric
VPI is a Transformer coil insulating technique usually used on Medium Voltage Transformers
No. Square D completely immerses its core and coil assemblies in a UL recognized 220C varnish.
VPI systems are used to impregnate Medium Voltage units to fill the voids to prevent build up of Ozone in the winding spaces during normal operation. It is also used on small, fractional VA units that need to fill the voids to accommodate heat transfer. On the larger LVGP units neither of these conditions apply so SquareD/Schneider Electric uses a varnish dip/bake process. Many companies have the VPI system installed, use it for all their Transformers and put it in their specification as a exclusionary tool
CTA-ID : 2046907
Sign up for all the latest solutions, offers and best practices straight to your inbox.
We are excited that you have joined the group. You will receive your welcome email soon describing the program and what to expect in the upcoming weeks. Enjoy!