Methods for making slot cell insulation and slot cell insulation produced thereby

Abstract

A method is for making slot cell insulation 20 for positioning in a rotor slot between rotor windings 17 and adjacent portions of the rotor 16 of a dynamoelectric machine 15. The method may include providing a male mold 51 having an outer shape corresponding to the rotor slot, stacking a plurality of layers adjacent the male mold, and laminating the stacked layers together on the male mold to thereby form the slot cell insulation 29. The stacked layers may include a pair of aromatic polyamide layers 32a, 32b and a polyimide layer 33 therebetween. These layers may be prelaminated, that is, laminated together prior to the overall lamination of the layers. Each aromatic polyamide layer 32a, 32b may be NOMEX® 410 paper, for example. In addition, the polyimide layer 33 may be a corona-resistant polyimide layer, such as a KAPTON® CR layer.

Dependencies are inferred from the claim text.