H - Electricity – 01 – H
Patent
H - Electricity
01
H
306/126
H01H 85/26 (2006.01) H01H 85/30 (2006.01)
Patent
CA 1094617
IMPROVED END FITTING FOR HIGH-VOLTAGE FUSE ABSTRACT: An improved end fitting for a high- voltage fuse is disclosed. The fuse is of the general type having a movable striker pin which resides in a first posi- tion as long as a fusible element of the fuse remains intact. Should the fusible element cease to be intact, through fusing thereof or mishandling of the fuse, the striker pin moves to a second position to partially exit beyond an end of the fuse when a sharp end of the striker pin pierces a seal at the fuse end. The improved end fitting is removably mountable to the fuse and includes a body having a bore therethrough. The first end of the body surrounds and encloses the seal. A rod, mounted for movement in the bore at the end of the body, resides in a first normal location when the striker pin is in the first normal position, and in a second location when the striker pin is in the second position. Facilities which indicate that the rod is in the second location may include a vividly colored portion of the rod which is visible only when the rod is in the second location. The end fitting is so designed that it prevents the escape from the second end of the body of gas vented from the pierced seal. The end fitting, however, does permit the escape of such gas from the first body end in such a diffuse manner as to greatly reduce the possibility of flashover between adjacent energized live parts. The end fitting also limits the movement of the rod and retains it within the bore at the second location. This has the result of limiting the movement of the striker pin beyond the seal to retain it partially within the bore and partially within the fuse.
311974
Osler Hoskin & Harcourt Llp
S&c Electric Company
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