Insulation for electrotechnical appications that produces no...

Details Insulation for electrotechnical appications that produces no... Insulation for electrotechnical appications that produces no...

H - Electricity

02

K

H02K 3/40 (2006.01) H02K 15/12 (2006.01)

Patent

CA 2414080

The invention relates to an insulation for electrical conductors that produces no partial discharges. The aim of the invention is to provide improved insulations that produce no partial discharges and that are used for electrotechnical applications, especially for windings of electrical machines and transformers that are characterized by improved adhesion, processability and improved electrical properties and that allow a reduction of the thickness of the insulation. To this end, the electrical conductor is taped with a micaceous tape that consists of an insulating material. Said tape comprises a film support produced from a polymer that can be heat-shrunk above 150 ~C and a rubber layer fastened to the film support by means of a binder, and the polymer is subsequently heat-shrunk.

L'invention vise à fabriquer des isolations améliorées résistant aux décharges partielles, destinées à des applications électrotechniques, en particulier à des enroulements de machines électriques et de convertisseurs, se caractérisant notamment par une amélioration de l'adhérence, de la capacité de traitement, et des propriétés électriques, et permettant une réduction de l'épaisseur d'isolation. A cet effet, on réalise un bandage du conducteur électrique au moyen d'une bande de matériau isolant micacé constituée d'un porteur de film réalisé dans un polymère thermorétrécissable au dessus de 150 ·C, et d'une couche de mica pouvant être fixée au porteur de film par l'intermédiaire d'un liant, puis on réalise un thermorétrécissement du polymère.

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