Method for producing impregnable fine mica tapes with an...

H - Electricity – 01 – B

Patent

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Details

H01B 3/04 (2006.01) H01B 13/26 (2006.01) H02K 3/30 (2006.01)

Patent

CA 2314916

The invention relates to a method for producing impregnable fine mica tapes with an incorporated accelerator which are impregnated with a solvent-free impregnating resin after being wound on the conductor of the coils of electrical machines and which are subsequently hardened using heat action. A fine mica film is sprinkled with a powder paint resin system which contains a hardener, and the side of the fine mica film that is sprinkled with the powder paint is bonded to a supporting material, whereby, during bonding, the powder paint resin system is hardened by influencing the temperature. The fine mica tape produced in such a manner is especially suited for providing thick insulation wall strengths as required in high voltage machines.

L'invention concerne un procédé permettant de produire des rubans de mica fin imprégnables, à accélérateur intégré, qui après enroulement sur les conducteurs des bobines de moteur électrique sont imprégnés avec une résine d'impression exempte de solvant puis durcis par apport de chaleur. Un film de mica fin est recouvert d'un système de résine sous forme de peinture en poudre, contenant un durcisseur, et le côté recouvert de peinture en poudre dudit film de mica fin est collé avec un matériau support, le système de résine sous forme de laque en poudre se durcissant sous l'effet de la température. Le ruban de mica fin ainsi produit convient en particulier pour l'obtention de parois d'isolation épaisses telles que celles nécessaires dans des moteurs haute tension.

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