| 摘要 |
<p>Method of Manufacturing Plastics Covered Highvoltage Cables A method of manufacturing a plastics covered highvoltage 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 electrically 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.</p> |
