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This invention relates to an extrusion plant for making a high voltage power cable including a conductor (2, 11) and concentrical layers of extruded polymer insulation and semiconductors. It includes an extrusion head (15, 40, 50) for extruding at least four successive layers - a first, inner layer...
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Main Authors | , , , , , |
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Format | Patent |
Language | Norwegian |
Published |
16.10.1996
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Edition | 6 |
Subjects | |
Online Access | Get full text |
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Summary: | This invention relates to an extrusion plant for making a high voltage power cable including a conductor (2, 11) and concentrical layers of extruded polymer insulation and semiconductors. It includes an extrusion head (15, 40, 50) for extruding at least four successive layers - a first, inner layer of semiconductive material (3), at least two layers of insulation material (4, 5; 7, 8, 9) and a second, outer layer of semiconductive material (6) - on top of each other, onto the conductor (2). The head (15, 40, 50) is provided with at least four individual extruder inlet screws (41-44, 46), at least two for the insulation layers and two for the semiconductive layers. |
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Bibliography: | Application Number: NO19950000839 |