Current limiting fuse with auxiliary element

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

1979-02-09

1981-04-07

Beha, Jr., William H.

Electricity: electrothermally or thermally actuated switches

Electrothermally actuated switches

Fusible element actuated

337293, H01H 8538

Patent

active

042609763

ABSTRACT:
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 assisting 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 dielectric characteristics are disposed for being wound around a predetermined notch in the fuse element for greatly enhancing the flashover or arc transfer characteristic between the main fuse element and the auxiliary fuse element during a fusing operation.

REFERENCES:
patent: 3243552 (1966-03-01), Mikulecky
patent: 3287524 (1966-11-01), Huber et al.
patent: 3733572 (1973-05-01), Mikulecky
patent: 3735317 (1973-05-01), Jacobs
patent: 3813627 (1974-05-01), Koch
patent: 3983526 (1976-09-01), Koch
patent: 4028655 (1977-06-01), Koch
patent: 4123738 (1978-10-01), Huber

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