Method for preparing an HVDC accessory
AssigneeNexans
InventorsSusanne Nilsson, Ramona Huuva, Staffan Josefsson
Life of this patent
Estimating the term…
Abstract
A method for preparing an HVDC cable for jointing or termination includes the step of providing a section of an HVDC cable comprising a conductor surrounded by a first semiconducting layer, and at least one insulation layer of a first polymer material surrounding the first semiconducting layer, where the insulation layer comprises conductive volatile by-products. A tape of a second polymer material is provided, where the additional layer comprises conductive volatile by-products. The tape is lapped onto the insulation layer thereby forming an additional layer. Heat is applied to crosslink the additional layer and redistribute the conductive volatile by-products.
Claims9
Method for preparing an HVDC cable for jointing or termination comprising the steps of:
- providing a section of an HVDC cable comprising a conductor surrounded by a first semiconducting layer, and at least one insulation layer of a first polymer material surrounding the first semiconducting layer, wherein the insulation layer comprises conductive volatile by-products;
- providing a tape of a second polymer material, wherein the tape comprises conductive volatile by-products;
- lapping the tape onto the insulation layer thereby forming an additional layer;
- and
- applying heat to crosslink the additional layer and redistribute the conductive volatile by-products in order to obtain a distribution wherein the conductive volatile compounds are evenly distributed in the radial direction through the insulation layer and the additional tape layer after the cable section has been subjected to heat treatment.
Dependencies are inferred from the claim text.