Process for producing electric windings

Details Process for producing electric windings Process for producing electric windings

1979-05-14

1980-09-16

Esposito, Michael F.

Adhesive bonding and miscellaneous chemical manufacture

Methods

Making electrical conductors of indefinite length

174110E, 174120SR, 427116, 427435, 427117, 528 75, H01B 1306

Patent

active

042228026

ABSTRACT:
Electric machine windings produced by wrapping a composite insulating material around an electrical conductor, said composite insulating material having been prepared by bonding two or more insulating materials with a silicone resin containing hydroxyl groups in the molecular structure, impregnating said composite insulating material with an insulating varnish comprising 1 equivalent of a polyfunctional epoxy compound and 2.5 to 25 equivalents of a polyfunctional isocyanate compound and curing said varnish, have excellent insulation properties under high temperatures and high humidity and thermal resistance of class H or more.

REFERENCES:
patent: 2882183 (1956-05-01), Bond et al.
patent: 3369947 (1968-02-01), Mertens et al.
patent: 3585065 (1971-06-01), Johnson
patent: 4096291 (1978-06-01), Dunwald et al.

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