Method of manufacturing plastics covered highvoltage cable

Details Method of manufacturing plastics covered highvoltage cable Method of manufacturing plastics covered highvoltage cable

B - Operations, Transporting

29

C

18/774

B29C 47/06 (2006.01) H01B 13/14 (2006.01) H01B 13/24 (2006.01)

Patent

CA 1102075

Method of Manufacturing Plastics Covered High- voltage Cables Abstract of the Disclosure A method of manufacturing a plastics covered high- voltage cable by passing an electrical conductor through two successive separate extrusion heads. In the first extrusion head a conductor shield layer is extruded around said conductor as well as a thin auxiliary insulation layer around said conductor shield layer. In the second extrusion head a main insulation layer is extruded around said auxiliary insulation layer as well as, if preferable, a corona shield layer around said main insulation layer. The auxiliary insulation layer is of the same or electri- cally equivalent material as the main insulation layer. Said auxiliary insulation layer prevents plastics burr to stick to the surface of the conductor shield layer from the first extrusion head.

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