Process :

Vacuum Pressure Impregnation (VPI) is a process in which ‘green’ coils (dry, porous) are placed in a stator, and then the whole stator is processed. The process involves a stator (at room temperature or slightly heated) being placed in a ‘dry’ tank and a vacuum (as close to pure vacuum as possible) being applied for a designated period of time. The tank is then quickly filled with Resin/varnish and pressure is applied, the stator is allowed to ‘pressure soak’ for another designated period of time. At the end of the cycle the resin is drained, pressure is ‘blown off’ and then stator is baked to cure the resin.

We use High performance vacuum pumps, controls, sensors, traps in our modern systems. For more reliable and homogeneous results, our state of the art VPI plants can also be made completely automatic, providing a stable environment for the impregnation process to take place. We provide an estimated time chart for each part of the cycle based upon averages and long term experience.

Types :

1. Manual Vacuum Pressure Impregnation Plant :

Manual Vacuum Impregnation plant includes, manual lid clamping arrangement, manual operated ball valves and all other process to be operated manually.

2. Semi Automatic Vacuum Pressure Impregnation Plant :

Semi Automatic Vacuum Pressure Impregnation plants are designed as per customer’s requirement. A combination of automation and manual operation can be routed as per requirement. We believe in customer satisfaction, and therefore we customize as per customer’s needs.

3. Automatic Vacuum Pressure Impregnation Plant :

Automatic Vacuum Pressure Impregnation Plant includes Automatic Bayonet Lid clamping arrangement, Hydraulic lid up-down assembly, pneumatically operated valves (solenoid Valves) and the whole process is carried out automatically through PLC system.