H - Electricity – 01 – B
Patent
H - Electricity
01
B
H01B 12/02 (2006.01)
Patent
CA 2519887
A super-conductive cable includes: a former (2); a super-conductive layer (3) formed on the outer circumference of the former (2); an electrically insulating layer (4) formed on the outer circumference of the conductive layer (3); a shield layer (6) formed on the outer circumference of the insulating layer (4); and a normally conductive metal layer (5) formed between the insulation layer (4) and the shield layer (6). The normally conductive metal layer (5) existing inside the shield layer (6) has a greater inductance than the shield layer (6), thereby suppressing temperature increase of the super- conductive layer when an accident such as shortcircuit has occurred and reducing the AC loss during normal current flowing because more current flows by the shield layer (6).
L'invention concerne un câble supraconducteur comprenant : un gabarit (2) ; une couche supraconductrice (3) formée autour du gabarit (2) ; une couche isolante (4) formée autour de la couche supraconductrice (3) ; une couche de blindage (6) formée autour de la couche isolante (4) ; et une couche métallique conductrice (5) formée entre la couche isolante (4) et la couche de blindage (6). La couche métallique conductrice (5) située sous la couche de blindage (6) possède une inductance supérieure à celle de la couche de blindage (6), ce qui, d'une part, évite une augmentation de la température dans la couche supraconductrice lorsqu'un accident, tel qu'un court-circuit, se produit, et, d'autre part, réduit les pertes CA lorsque le courant circule normalement, car davantage de courant circule grâce à la couche de blindage (6).
Nishimura Masanobu
Yumura Hiroyasu
Bereskin & Parr Llp/s.e.n.c.r.l.,s.r.l.
Sumitomo Electric Industries Ltd.
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