Nexans, a leader in advanced cabling systems, solutions and services, has completed the final test to qualify its state-of-the-art 420 kV XLPE subsea cable for installation at a world-record depth of 550 meters (1,804 ft).
A press release said that the cable testing, carried out by Nexans Norway, was done to meet a specific customer need. The cable is to be used for a project that requires a subsea power interconnector crossing Fensfjorden—a fjord close to Bergen in Norway—which is approximately eight km wide and 526 meters at its deepest point.
The Fensfjorden project is part of a broader plan by BKK Nett AS, one of Norway’s largest power companies, to strengthen the electrical grid in Western Norway. That plan includes a new 420-kV connection between Modalen-Mongstad that will ensure a stable and reliable power supply to over 420,000 residents, businesses and industry facilities throughout the region.
“We have every reason to be proud of what we have accomplished,” declared Nexans Project Manager Ivar Rolfstad. “We have pushed the technological boundaries and (beaten) our own previous world records!”
The new record tops the prior one that had been set by Nexans, for a 20-km 420 kV XLPE cable that was installed in water that was 390 meters deep in the fjord of Hjeltefjorden, Norway.
Nexans developed and produced the Fensfjorden cable at Nexans Norway facility in Halden. Installation on the bed of the fjord will be performed by a Nexans cable-laying vessel, the C/S Nexans Skagerrak, later in 2019, the release said.