Patent ID: 6417456
Filing Date: 2002-07-09
Classification: H01F,H02K

Abstract:
An insulated conductor for high-voltage windings in electric machines comprising:a conductor comprising a flexible cable formed of one or more strands, an inner, first semi-conductive layer surrounding the strands, a first insulating layer surrounding the inner first semi-conductive layer and an outer, second semi-conductive layer surrounding the first insulating layer, said second semi-conductive layer including at least two different earth points along the insulated conductor, the second semi-conductive layer including breaks comprising an electrical discontinuity having spaced apart edges forming a gap each of said breaks being located between the earth points, and a shielding device located over each of said breaks and being coupled to one of the edges of the discontinuity and extending across the gap and overlapping the other edge being in radially spaced relation therewith for reducing amplification of the electric field strength produced at said brakes.