Patent · US Active

Electrical HV transmission power cable

US11011287B2 · kind B2 · utility

0Cited by

3References

8Claims

0Family size

Assignee

Borealis AG · AT

Inventors

Peter Sunnegårdh · Kallinge, SE
Marc Jeroense · Karlskrona, SE
Anders Gustafsson · Karlskrona, SE
Pär Lilja · Ronneby, SE
Per-Ola Hagstrand · Stenungsund, SE
Villgot Englund · Göteborg, SE
Annika Smedberg · Stenungsund, SE
Ulf Nilsson · Stenungsund, SE
Johan Andersson · Mörbylånga, SE
Virginie Eriksson · Stenungsund, SE
Jonas Jungqvist · Stenungsund, SE
Jonny Brun · Nödinge, SE

Key dates

Filing date	Aug 19, 2014
Grant date	May 18, 2021
Priority date	—
Expiry date	Jun 10, 2036

Classification

Technology area (CPC H)Electricity
CPC primaryH01B13/24
WIPO fieldElectrical machinery, apparatus, energy
WIPO sectorElectrical engineering

Abstract

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 Cigré TB496, whereby the rated voltage U0 is 450 kV or more. The type test includes subjecting the power cable to a DC voltage of 1.85*U0 during 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*U0, followed by additional 2 to 5 cycles during at least 4 to 10 days at positive polarity, and wherein U0 is 450 kV, or 525 kV, or more.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.