Electricity: electrical systems and devices – Safety and protection of systems and devices – High voltage dissipation
Patent
1988-01-26
1989-09-12
DeBoer, Todd E.
Electricity: electrical systems and devices
Safety and protection of systems and devices
High voltage dissipation
361124, 361129, 337 32, H02H 322
Patent
active
048665622
ABSTRACT:
A self-contained air gap spark arrester assembly is disclosed which may be constructed and tested prior to its incorporation into a fail-safe surge arrester assembly. The air gap spark arrester assembly comprises a rivet shaped electrode, on which are concentrically mounted an insulating ring, a ring electrode, and an insulating spacer ring. These elements are arranged so as to provide an air gap between the two electrodes, aproximately equal to the thickness of the spacer ring and shielded from particulate contamination. Due to the placement of the assembly's electrodes, it is particularly well suited for combination with gas tube arresters in metal canisters. In one embodiment the canister is of cylindrical form and houses a fusible alloy spacer, a cylindrical gas discharge tube, and the air gap spark arrester assembly. The spark arrester's ring electrode contacts the canister walls, thereby providing a connection to the gas tube's remote electrode, and the rivet electrode provides for a connection to the near electrode of the gas tube. This canister arrangement may be adapted for use in a number of fail-safe surge arrester assemblies.
REFERENCES:
patent: 4132915 (1979-01-01), Wilms
patent: 4158416 (1977-08-01), Gilberts
Deboer Todd E.
Morris Frank E.
TII Industries Inc.
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