Borealis Ag

Abb Schweiz Ag

Johan Andersson

Villgot Englund

Ulf Nilsson

Annika Smedberg

Per-Ola Hagstrand

Virginie Eriksson

Thomas Steffl

Martina Sandholzer

Thomas Hjertberg

Mattias Bergqvist

Thomas Gkourmpis

Davide Tranchida

Johannes Wolfschwenger

Andreas Farkas

Christian Müller

Mattias Andersson

Marc Jeroense

Antonios Gitsas

Hossein Ghorbani

Antonis Gitsas

Anders Gustafsson

Tomas Ahlberg

Peter Sunnegårdh

Jonas Jungqvist

Jonny Brun

Karl Nielsen

Pär Lilja

A transmission cable includes a conductor or a bundle of conductors extending along a longitudinal axis, which is circumferentially covered by an insulation layer having an extruded insulation material, whereby the transmission cable passes the electrical type test as specified in Cigr&#xe9; TB496, whereby the rated voltage Uis 450 kV or more. The type test includes subjecting the power cable to a DC voltage of 1.85*Uduring 10 to 15 cycles at negative polarity, followed by a polarity reversal with another 10 to 15 cycles at positive polarity at a DC voltage of 1.85*U, followed by additional 2 to 5 cycles during at least 4 to 10 days at positive polarity, and wherein Uis 450 kV, or 525 kV, or more.

Electrical HV transmission power cable

A crosslinked polymer composition based on a plastomer, which is suitable for producing at least one layer of cable accessories like cable joints, bushings or terminations; its use for preparing such a layer and the cable accessory comprising the composition.

Crosslinked polymer composition for cable accessories

A cable having one or more conductors surrounded by at least an inner semiconductive layer, an insulation layer and an outer semiconductive layer, in that order. The insulation layer has at least 90 wt % of a polymer composition, said polymer composition having 80.0 to 99.9 wt % of an LDPE homopolymer or copolymer; and 0.1 to 20.0 wt % of: an ultra-high molecular weight polyethylene having a Mw of at least 1,000,000; or a single site catalysed medium density polyethylene (MDPE) having a density of 925 to 940 kg/mor a single site catalysed linear low density polyethylene (LLDPE) having a density of 910 to 925 kg/m.

Cable with advantageous electrical properties

The present invention relates to a polymer composition with improved electrical properties and to a use thereof preferably in electrical devices as well as to a cable surrounded by at least one layer including the polymer composition.

Polymer composition for electrical devices

The present invention relates to a polymer composition, to the use of the composition for producing an electrical device, as well as to a cable surrounded by at least one layer including the polymer composition.

A method for determining conductivity of cable insulation of a cable including at least one conductor that determines the central axis of the cable and insulation layer surrounding the conductor longitudinally and radially includes steps of retrieving a cable sample from a cable, which sample includes a length of at least one insulation layer and preparing an insulation sample from the cable sample. The insulation sample is prepared from cable sample by cutting a circular layer having a set thickness at desired radius from the central axis of the cable.

Method for determining an electrical property of cable insulation

Growing community of inventors

Hisings Backa, Sweden

Johan Andersson