Current limiting fuse with auxiliary element

Details Current limiting fuse with auxiliary element Current limiting fuse with auxiliary element

H - Electricity

01

H

306/149

H01H 85/04 (2006.01) H01H 85/38 (2006.01)

Patent

CA 1133547

19 48,282 ABSTRACT OF THE DISCLOSURE A current limiting fuse is disclosed in which a main fuse element is wound at a given pitch around a fuse spider or mandrel. An auxiliary fuse element for assist- ing in low current high voltage current limiting operation is wound at generally the same pitch but in a disposition of non-electrical contact on the same fuse spider or mandrel. At the ends of the auxiliary elements, sheaths of flexible glass material of known thickness and dielec- tric characteristics are disposed for in turn being wound around a predetermined notch in the fuse element for greatly enhancing the flashover or arc transfer character- istic between the main fuse element and the auxiliary fuse element during a fusing operation.

344423

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