Dry-type high-voltage winding
AssigneesE.I. du Pont de Nemours and Company, Electricite de France (Service National), Schneider Electric SA
InventorsLaureote Sylvain, Dominique Feldmann, Michel Sacotte, Jacques Wild, Lana Sheer, Albert P. Walrave, Max-André Mounoud
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Abstract
The invention concerns an air-core primary voltage winding comprising a conductive wire coil coated with an insulating sheath, characterized in that said coil (1) is encapsulated in a high voltage insulating thermoplastic resin (2), and in that it further comprises an electroconductive potential fixing surface layer (3) in thermoplastic resin compatible with the thermoplastic resin of the insulating encapsulation (2), deposited on this encapsulation.
Claims16
High-voltage winding comprising a hollow cylindrical winding made of conductive wire, the conductive wire being coated with an insulative sheath and having connecting conductors having ends, said hollow cylindrical winding ofconductive wire being coated with a high-voltage insulative thermoplastics resin which surrounds both the outside contour and the inside contour of the hollow cylindrical winding, a lateral strip covering the high-voltage insulative thermoplastics resin, the lateral strip being disposed axially relative to the high-voltage insulative thermoplastics resin, the lateral strip being made of an insulative thermoplastics resin compatible with the high-voltage insulative thermoplastics resin, the lateral strip and the high-voltage insulative thermoplastics resin forming an increased thickness relative to the high-voltage insulative thermoplastics resin, the lateral strip covering the connecting conductors of the hollow cylindrical winding, orifices being formed in the high-voltage insulative thermoplastics resin and in the lateral strip to provide a passage for said ends of said connecting conductors;
- a potential fixing electroconductive surface layer being deposited on the whole of the high-voltage insulative resin and of the lateral strip, except at said orifices, said potential fixing electroconductive surface layer being made of a thermoplastics resin compatible with the high-voltage insulative thermoplastics resin.
Dependencies are inferred from the claim text.