Nexans commissions first superconducting FCL

15 January 2012


Nexans, the leading cable manufacturer, has successfully commissioned the world’s first resistive superconducting fault current limiter (SFCL) based on second-generation superconductor tapes. The SFCL, made from superconducting elements developed in co-operation with the Karlsruhe Institute of Technology, has been installed on behalf of Vattenfall Europe Generation AG to provide short-circuit protection for the internal medium voltage power supply that feeds coal mills and crushers in the Boxberg lignite power plant in Saxony, Germany.

A first generation SCFL, based on solid superconducting materials, was installed by Nexans at Boxberg in 2009 as part of a long-term test programme. Following the successful completion of this project, Nexans has returned to the plant for live testing of a new SCFL device featuring superconducting tapes. These tapes reduce the already low losses in the conductor material by around 90 percent, thereby lowering operating costs. They also provide an even faster response to a short circuit than do first generation materials.




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