Encapsulated spark gap and method of manufacturing

Details Encapsulated spark gap and method of manufacturing Encapsulated spark gap and method of manufacturing

H - Electricity

01

T

H01T 4/02 (2006.01) H01J 17/40 (2006.01) H01T 4/08 (2006.01) H01T 4/12 (2006.01)

Patent

CA 2108828

ABSTRACT OF THE DISCLOSURE In order to guarantee that the gas atmosphere of the structure of an encapsulated spark gap (9) is reliably protected from the effect of moisture, two flat discharge surfaces of two dish-type electrodes (1,6), each designed with a collar-shaped rim (2), abut on both sides of a thin insulating layer (4) having punched holes. A tubular glass insulator (3) is sealed on the front side into the collar-shaped rims of the two electrodes. During the course of their manufacturing, the electrodes are placed with their collar-shaped rim on the front sides of the glass insulator, are inductively heated and, under the action of an axially directed pressing force, are driven toward one another and pressed against the insulating layer. A spark gap of this type can be used as a secondary discharge gap for triple-electrode arresters.

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