Patent ID: 8238992
Filing Date: 2012-08-07
Classification: H01F,H01L

Abstract:
1. Arrangement for current limiting for a superconducting cable comprising: a superconducting cable; a cryostat, wherein said superconducting cable is arranged in said cryostat; and an iron core extending along said cryostat, wherein said cryostat has an outer wall made from two metallic tubes arranged concentrically with respect to one another with vacuum insulation in between, said outer wall of said cryostat surrounding a free space for a coolant to pass through, and in which free space the superconducting cable is arranged, wherein, the cryostat further having an inner wall within said outer wall, separated by said free space, and made from two metallic tubes arranged concentrically with respect to one another with vacuum insulation in between, said inner wail surrounding cylindrical cavity, wherein the superconducting cable is constructed with a superconducting conductor, a dielectric surrounding said conductor, and a superconducting screen which surrounds said dielectric, and wherein said superconducting cable, in said free space between said outer wall and said inner wall, is wound in a helical shape around an outer surface of said inner wall, wherein said iron core is arranged in the cylindrical cavity.