Method for providing an insulated electric DC cable or DC termination or joint

• Main Authors: HUUVA, RAMONA, NILSSON, SUSANNE, SONERUD, BJÖRN
• Format: Patent
• Language: English; French; German
• Published: 18.11.2015
• 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

The invention is related to a method of providing an insulated electric DC cable or DC termination or joint, the method comprising : - providing a polym er based insulation system (11,12,13) com prising a compounded polymer composition (12), characterized by the step of: - exposing the polymer based insulation system (11,12,13) to a heat treatment procedure while the outer surface of the polymer based insulation system (11,12,13) is covered by a cover (14) permeable to all the substances present in the polymer based insulation system (11,12,13) in a non-homogenous distribution, the permeable cover (14) having a melting and/or softening temperature greater than or equal to 120 °C, thereby equalizing the concentration of the substances in the polymer based insulation system (11,12,13).