Current limiting high voltage fuse

H - Electricity – 01 – H

Patent

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Details

H01H 85/042 (2006.01) H01H 85/08 (2006.01) H01H 85/11 (2006.01) H01H 85/12 (2006.01) H01H 85/18 (2006.01)

Patent

CA 2255424

A current limiting high voltage fuse wherein a hollow body 1 has conductive caps 2, 3 at either end and is filled with silica sand. A plurality of fusible strips 8 extend between the two caps. Each fusible strip has a low melting alloy spot 10. The locations of the spots are staggered and are positioned substantially one third of the way along a respective fusible strip. In an alternative construction, the fusible strips 13, 14 are wound around a pair of coaxial formers 11, 12, with the fusible strips 14 wound around the central former 12 having a smaller cross section than the fusible strips 13 wound around the outer former 11.

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