Encapsulated fuse with corona shield

Details Encapsulated fuse with corona shield Encapsulated fuse with corona shield

H - Electricity

01

H

H01H 85/175 (2006.01) H01H 85/165 (2006.01)

Patent

CA 2542300

An encapsulated fuse (10) for power distribution systems and method for producing such fuses is provided. A fuse includes a body (20) with opposing terminals (30, 40). A corona shield (50) is generally coaxial with the fuse (10) and substantially extends the full length of the fuse body (20). The corona shield (50) is electrically coupled at its first end (70) with a first fuse terminal (30). The second end (80) of the corona shield (50) has a slightly larger cross-section than the first end (70) to provide electrical isolation from the second fuse terminal (40). The fuse (10) and attached corona shield (50) are molded in an encapsulating material (150).

L'invention concerne un fusible encapsulé (10) pour réseaux de distribution d'énergie, ainsi qu'un procédé de production de ce type de fusibles. Un fusible comprend un corps (20) doté de bornes opposées (30, 40). Un écran anti-effluves (50) est généralement coaxial du fusible (10) et s'étend sensiblement sur toute la longueur du corps (20) du fusible. L'écran anti-effluves (50) est couplé électriquement par sa première extrémité (70) à une première borne de fusible (30). La seconde extrémité (80) de l'écran anti-effluves (50) présente une coupe transversale légèrement plus importante que celle de la première extrémité (70), ce qui permet d'assurer son isolation électrique de la seconde borne de fusible (40). Le fusible (10), solidaire de l'écran anti-effluves (50), est moulé dans un matériau d'encapsulation (150).

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