Electricity: electrical systems and devices – Safety and protection of systems and devices – High voltage dissipation
Patent
1988-10-17
1989-09-12
DeBoer, Todd E.
Electricity: electrical systems and devices
Safety and protection of systems and devices
High voltage dissipation
361124, 361120, 337 32, H02H 322
Patent
active
048665614
ABSTRACT:
The lightning arrester device comprises an external metal casing (1) defining an enclosure (2) containing a neutral gas, and at least one metal rod (3a, 3b) forming an electrode and penetrating into the interior of the casing, insulating sealing means (4) being provided between the rod and the casing in order to close said casing, and comprising, moreover, at least one fusible element (5) adapted to create a short circuit between the electrode (3a, 3b) and the casing (1) when the quantity of energy to be diverted by the lightning arrester device exceeds a specified threshold. On its external wall, near one of its ends receiving an electrode (3a, 3b), the metal casing (1) comprises a housing (L), the fusible element (5) being disposed in said housing, and a strip (9) of insulating material surrounds said fusible element and the housing, said strip (9) comprising holes (10) and being itself surrounded by a conductive metal ring (11) electrically connected to the electrode, the whole unit being such that when there is a rise in temperature in the casing, the fusible element (5) begins to melt and flows through at least one hole (10) in the insulating strip to create a short circuit electrical contact between the casing (1) and the metal ring (11) connected to the electrode.
REFERENCES:
patent: 3038046 (1962-06-01), Devine et al.
patent: 3522570 (1970-08-01), Wanaselja
patent: 4056840 (1977-11-01), Lundsgaard et al.
patent: 4062054 (1977-12-01), Simokat
Compagnie Industrielle de Tubes et Lampes Electriques CITEL
Deboer Todd E.
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