Patent ID: 8952256
Filing Date: 2015-02-10
Classification: H02K

Abstract:
1. A stator bar comprising: a substantially quadrangular conductive element made of a plurality of interwoven strands; and an electric insulation applied around the conductive element and including a plurality of corners corresponding to corners of the conductive element, the electric insulation including an inner insulation zone facing the conductive element, and an outer insulation zone surrounding the inner insulation zone, a radius of at least one of the corners being 1.5-2.5 millimeters, wherein permittivity at the corners of the electric insulation decreases by 35-45% from the inner insulation zone facing the conductive element towards the outer insulation zone, wherein the insulation comprises a mica tape impregnated with a resin, and wherein the mica tape at the inner insulation zone has a lower resin content than the mica tape at the outer insulation zone.