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High temperature cable

High temperature superconductors can be important aspects of technological advances, because equipment and devices could have superconducting parts in their components. Superconducting material, refers to any material, such as for instance ceramic materials based on mixed oxides of copper, barium and yttrium or of bismuth, lead, strontium, calcium, copper, thallium and mercury, comprising a superconducting stage having an almost null resistivity at temperatures below a so-called critical temperature Tc. These materials are usually referred to as high temperature superconductors. Such materials are obviously of a greater technical interest with respect to low temperature superconductors with much lower implementation difficulties and energy costs. A superconducting cable is capable of transmitting high current with low energy loss in a compact conductor. Power transmission is generally made through an alternating current, and a superconductor employed under an alternating current would inevitably be accompanied by energy loss, generically called AC loss. It is well known to use fiberglass in the fabrication of high temperature electrical wires and cables. Fiberglass is used to encase a conductor material, as an electrical insulation, because it can withstand high temperatures. Superconducting cable conductors are usually constructed from a generally cylindrical carrying element with superconducting wires wound helically thereon as superconducting conductor elements.

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