Current limiting high voltage fuse

Details Current limiting high voltage fuse Current limiting high voltage fuse

1998-04-24

1999-04-06

Picard, Leo P.

Electricity: electrothermally or thermally actuated switches

Electrothermally actuated switches

Fusible element actuated

337227, 337160, 337161, H01H 8511, H01H 85175

Patent

active

058924272

ABSTRACT:
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.

REFERENCES:
patent: 2639350 (1953-05-01), Cox
patent: 3251968 (1966-05-01), Cameron
patent: 3835431 (1974-09-01), Rosen et al.
patent: 3864655 (1975-02-01), Kozacka
patent: 4357588 (1982-11-01), Leach et al.
patent: 4486734 (1984-12-01), Leach

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