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Critical temperature T c, the temperature below which the wire becomes a superconductor; Critical current density J c, the maximum current a superconducting wire can carry per unit cross-sectional area (see images below for examples with 20 kA/cm 2). Superconducting wires/tapes/cables usually consist of two key features:
The second class of high-temperature superconductors in the practical classification is the iron-based compounds. [8] [9] Magnesium diboride is sometimes included in high-temperature superconductors: It is relatively simple to manufacture, but it superconducts only below 39 K (−234.2 °C), which makes it unsuitable for liquid nitrogen cooling.
Tri-rated cable is a high temperature, flame retardant electrical wire designed for use inside electrical equipment.. Tri-rated cable meets the requirements of three different international standards: BS 6231, UL 758, and CSA 22.2. [1]
A high-temperature superconductor levitating above a magnet. ... depending on the wire geometry and the temperature. [5] In practice, currents injected in ...
Insulation does not suddenly fail if the hot-spot temperature is reached, but useful operating life declines rapidly; a rule of thumb is a halving of life for every 10 °C temperature increase. Older editions of standards listed materials to be used for the various temperature classes.
The unit cell of high-temperature cuprate superconductor BSCCO-2212. Cuprates are layered materials, consisting of superconducting planes of copper oxide, separated by layers containing ions such as lanthanum, barium, strontium, which act as a charge reservoir, doping electrons or holes into the copper-oxide planes.
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