Insulation systems that present an electrical stress grading through the disposition of resistively graded networks between insulating layers is described. The resistively graded networks may be implemented by coating insulating material with resistive material, and wrapping the insulation material around a conductor. The resistive material may be linear or non-linear material. Fabrication of the insulating material, the resistive material, and the coating process are also discussed, as well as the application of the insulation to the conductor are also discussed.

Methods for forming discontinuous shields or shield structures for use in a cable are provided. A layer of dielectric material may be provided that extends in a longitudinal direction and has a first width across a width direction perpendicular to the longitudinal direction. Additionally, a layer of electrically conductive material may be formed on the dielectric material, and the layer of electrically conductive material may extend in the longitudinal direction and may have a second width across the width direction that is less than the first width. Respective gaps may be formed through both the electrically conductive material at a plurality of locations along the longitudinal direction, and each gap may span across the width direction by a distance greater than the second width but less than the first width.

A method for making a high-temperature winding cable is winding a tinned copper line around a coaxial line, signal lines and power lines after being assembled together, lapping the rim of the tinned copper line with a packaging material of Polytetrafluoroethene, and then, extruding an insulating layer of thermoplastic material on the rim of the packaging material, and finally, extruding an outer cover of fluororubber on the outer rim of the insulating layer, thereby forming a cable; sintering the cable; winding the sintered cable clockwise around and fixing it to a iron bar; cooling the wound cable; and finally, taking down the wound cable from the iron bar by rewinding it counterclockwise so as to obtain a high-temperature winding cable. The winding cable so made is not melt, damaged, and retains elasticity after the impact of high temperature 260 C.

The present invention relates to a method for manufacturing a heating element, a heating element manufactured thereby, and a use method thereof and, more particularly, to a method of manufacturing a heating element by combining a plurality of ultrafine wires having a high resistance value in a parallel structure in which the entire areas of the plurality of ultrafine wires contact each other, so that a combined resistance value is reduced while each of the ultrafine wires has a high resistance value to improve heat generating efficiency; the heating element; a use method thereof. The method for manufacturing a heating element forms an ultrafine wire having a high resistance value from a single metal or an alloy metal and then joins a plurality of ultrafine wires so as to be in contact with each other to form a single bundle resulting in a single-strand heating wire.

The present invention relates to a method for manufacturing a heating element, a heating element manufactured thereby, and a use method thereof and, more particularly, to a method of manufacturing a heating element by combining a plurality of ultrafine wires having a high resistance value in a parallel structure in which the entire areas of the plurality of ultrafine wires contact each other, so that a combined resistance value is reduced while each of the ultrafine wires has a high resistance value to improve heat generating efficiency; the heating element; a use method thereof. The method for manufacturing a heating element forms an ultrafine wire having a high resistance value from a single metal or an alloy metal and then joins a plurality of ultrafine wires so as to be in contact with each other to form a single bundle resulting in a single-strand heating wire.

An assembly head is used for wrapping a wire harness in an automated manner by means of a winding module. The module has a winding head which rotates about an axis of rotation and, according to a first aspect, has a total of three pressing elements with spring-mounted rollers, which, during the taping process, press a tape against the wire harness and guide the tape in a centering manner. According to a second aspect, a belt drive having a toothed belt is provided for driving the winding head. The toothed belt engages on the circumferential side only in one portion extending over a small angular range.

The subject matter of the invention is a method for the production of a cladding (1) for elongated material (2), in particular a sheath for cable sets. In this context, two adhesive tapes (3, 4) that are provided at least on one side with an adhesive coating (3) are axially spaced apart from one another by means of a carrier tape (5) are joined to form a laminate (3, 4, 5). For this purpose, both adhesive tapes (3, 4) arc each joined, on the side thereof with the adhesive coating, with the carrier tape (5), in the longitudinal direction, while defining a free region (6) limited by both adhesive tapes (3, 4). According to the invention, the carrier tape (5) is configured free of adhesive coating and is only provided with an own adhesive coating (7) at least in the free region (6) after the laminate (3, 4, 5) has been produced.

An insulating system having improved partial discharge resistance includes an insulating tape around a conductor. The tape is a mica tape joined to a carrier. The tape is impregnated with a synthetic resin, and is interspersed with a nanoparticulate filler, present bimodally, in the form of two fractions of the filler differing in particle size and fraction size. An adhesion promoter may be in the resin.

An insulating system having improved partial discharge resistance includes an insulating tape around a conductor. The tape is a mica tape joined to a carrier. The tape is impregnated with a synthetic resin, and is interspersed with a nanoparticulate filler, present bimodally, in the form of two fractions of the filler differing in particle size and fraction size. An adhesion promoter may be in the resin.

The present invention relates to a non-metallic light conductive wire, a composite conductive wire, a special cable, a motor and the like application products made of the conductive wire, and a method of making the composite conductive wire.