TVPI® Temperature Vacuum Pressure Impregnation

The specific advantages of the TVPI® tool:

  • reproducible and verifiable process
  • increased production workflow
  • efficient and short production cycle
  • drastic reduction of the production and tool costs
  • closed process without emission of styrol
  • minimized utilization of resin
  • impregnation and curing- process in one tool and one step
  • with one TVPI® tool all versions of one stator bar set can be produced (upper bar, lower bar, switch bar

Comparison of the impregnation process:

  • Comparing to competing systems the resin consumption is reduced drastically
  • Extensive peripherals, such as autoclaves or tempering ovens for curing the bars are not needed because the bars will be cured inside the TVPI® tool
  • Parallel operation of multiple TVPI® tools in a small production area is possible

Comparison TVPI® and VPI impregnation circle:

  • Depending on the bar geometry, we have a fixed production cycle between 4 to 8 hours. In this case, the daily production (24 hours) of 4 to 6 bars results with one TVPI® tool

Comparison circle time stator bar set:

  • The impregnation time of a complete stator winding can be reduced to a minimum

    Process over view TVPI® tool:

    • The manual effort as well as the manual cleaning process of the tool is reduced to less than 1,5 hour per impregnation of two bars
    • Our experience with TVPI® shows that the tangent delta values (tanD) in comparison to the VPI-impregnation are stable in the lower tolerance

    SSI Sensor System for Impregnation

    The SSI steers a fully automated impregnation process as well as the complete curing of the stator bars. It also assures continuous supervision, precise control and long-term documentation of the manufacturing process. This will minimize errors and guarantee a manufacturing process which is secured and reproducible. All process steps will be recorded and will be stored as a traceable part data base.

    • All process steps (in seconds, minutes and hours) will be recorded and stored on a CF-Card
    • The monitoring and control is performed on a touchpad which allows a manual control of the process
    • The part data base can be generated and transferred into an existing ERP-System
    • In case of expansion needs remote access will be available
    • The graphical supervision of the manufacturing process will be facilitated via web interface
    • The CAN-Bus system enables the connection to all interface types

    The tool design is protected by copyright.

    PETT & P.E.T.T. Trade and Industry Products GmbH
    Schlossgäßchen 4a
    55288 Udenheim

    Phone: +4915155988869
    E-Mail: info[at]