Fault current limiter with a plurality of superconductiong elements, at least one of which with an electric contact between its superconducting film and its electrically conducting substrate

Abstract

A fault current limiter, with a superconducting device () comprising a sequence of superconducting elements (-), each with an electrically conducting substrate (-), a superconducting film (-), and an electrically insulating intermediate layer (-) provided between the substrate and the superconducting film, wherein the superconducting films (-) of adjacent superconducting elements (-) of the sequence are electrically connected, in particular in series, wherein the electrically conducting substrate (-) of each superconducting element (-) of the sequence is electrically insulated from each electrically conducting substrate (-) of those adjacent superconducting elements (-) within the sequence whose superconducting films (-) are electrically connected in series with the superconducting film (-) of said superconducting element (-). At least one of the superconducting elements (-) comprises an electric contact (-) between its superconducting film (-) and its electrically conducting substrate (-) through its insulating layer (-), wherein the electrical contact (-) is located basically in the middle between the regions where the superconducting element (-) is electrically connected to a previous and a next superconducting element (-).