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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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Bibliographic Details
Main Authors LARSSON, BJOERN, PEDERSEN, JACK RAYMOND, MOSENG, ODD ANDREAS, HEGH, FREDDY, KNUTSEN, BJOERN ERIK, TESLO, HALVOR
Format Patent
LanguageNorwegian
Published 08.07.1996
Edition6
Subjects
AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
BASIC ELECTRIC ELEMENTS
CABLES
CONDUCTORS
ELECTRICITY
INSULATORS
PERFORMING OPERATIONS
SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING ORDIELECTRIC PROPERTIES
SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDEDFOR
SHAPING OR JOINING OF PLASTICS
TRANSPORTING
WORKING OF PLASTICS
WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
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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.
Bibliography:Application Number: NO19950000839