H - Electricity – 01 – B
Patent
H - Electricity
01
B
H01B 3/04 (2006.01) H01B 19/00 (2006.01) H02K 3/30 (2006.01) H02K 3/32 (2006.01) H02K 15/04 (2006.01)
Patent
CA 2314932
The invention relates to a method for producing insulating tapes which contain mica and which are used for coils of rotating electrical high voltage machines. After winding, the inventive insulating tapes can be impregnated with a solvent-free artificial resin under vacuum and pressure, and can be subsequently hardened using heat action. A mica film which contains fibers and which contains, apart from fine mica, additional organic and/or inorganic fibers is sprinkled with an epoxy resin mixture in the form of a powder paint. In addition, the side of the fiber-containing mica films which is sprinkled with the powder paint is bonded to a supporting material under pressure and at an increased temperature.
L'invention concerne un procédé permettant de produire des rubans isolants contenant du mica, destinés à des bobines de moteurs électriques haute tension rotatifs. Ces rubans peuvent être, après l'enroulement sous vide et sous pression, imprégnés d'une résine synthétique exempte de solvant, puis durcis par apport de chaleur. Selon ledit procédé, un film de mica contenant des fibres, qui, en plus du mica fin, comporte des fibres organiques et/ou inorganiques, est recouvert d'un mélange résineux epoxyde se présentant sous la forme d'une peinture en poudre, le côté des films de mica contenant des fibres recouvert de ladite peinture en poudre étant collé avec un matériau support sous pression et à une température élevée.
Borden Ladner Gervais Llp
Isovolta Osterreichische Isolierstoffwerke Aktiengesellschaft
Isovolta-Osterreichische Isolierstoffwerke Aktiengesellschaft
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