Superconductor current-limiting apparatus
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United States of America Patent
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Oct 5, 1993
Grant Date -
N/A
app pub date -
Sep 16, 1991
filing date -
Sep 14, 1990
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
The invention relates to superconductor current-limiting apparatus of the type having a magnetic core around which firstly a superconductor component is disposed, followed by an electric coil made of non-superconducting material, the apparatus being designed to be inserted in a line to be protected (L), the assembly constituted by the magnetic core (6A, 6B), the superconductor component (3A, 3B) and the electric coil (2A, 2B) forming a current-limiting unit which is connected in the line to be protected in series with a circuit-breaker. The apparatus has two current-limiting units contained in a single tank (13) filled with a dielectric cooling fluid (17), each superconductor component being disposed in an insulating cryostat (4A, 4B) filled with a cryogenic fluid, each magnetic core being part of a closed magnetic circuit, the tank having electrical bushings (14, 15, 16) for connecting the electric coils to the line to be protected via circuit-breakers (30A, 30B), the limiting units being assembled in parallel.
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