Vacuum Pressure Impregnation/ Vacuum Impregnation

VPI is a well proven process and systems are supplied for all sectors of the electrical and electronic industries.

Whitelegg supplied systems are well known for:

• Superb plant design
• Up to date process control

Techniques are constantly evolving in line with the needs of electrical designers and new insulation materials. Random wound low voltage machines may impregnate successfully with vacuum only techniques, but for form wound and higher voltage machines a pressure cycle is essential. We have the control that you and your plant requires.

Assimilation of new technologies

Design and manufacture takes full advantage of the latest in insulation materials and impregnants. For example the design of railway traction motors continues to be aimed at greater output combined with a reduction in size and weight and nowhere has the advent of new materials been more evident.

Diversity

From the Compact series with work chamber diameters from 300mm diameter to plants for high voltage machines with work chambers in excess of 5 meters diameter. Larger plants may be vertical or horizontal. The range includes plant for processing solid type paper insulated power cables, oil or gas filled cables, paper insulated and co-axial type telecom cables and for pre-drying and pre impregnation of cable papers.

Control Systems

All plant is available with fully automated process control based on industrial PLC or PC/PLC systems. Manual or semiautomatic sequence controlled systems are also available. Data acquisition systems are custom designed to suit requirements.

Ready Assembled Plants

These systems are pre-piped, pre-wired and assembled on a steel base ready for commissioning on site. Some standard sizes are: