Gas tube overvoltage protector with back-up gap

Details Gas tube overvoltage protector with back-up gap Gas tube overvoltage protector with back-up gap

1981-12-04

1983-09-20

Salce, Patrick R.

Electricity: electrical systems and devices

Safety and protection of systems and devices

High voltage dissipation

361119, 361120, 337 32, 337 34, 313325, H02H 906

Patent

active

044059671

ABSTRACT:
A gas tube overvoltage protector has two opposed electrodes sealed in a tubular dielectric housing, the outer ends of the electrodes extending from the housing. The inner ends of the electrodes define a primary gap at sub-atmospheric pressure. The lower electrode has an extension of reduced diameter on its outer end. An auxiliary gap is formed by pushing on a metal cap over the lower end of the dielectric housing, with a thin flexible dielectric member between the cap and the outer end of the bottom electrode, the extension extending through the dielectric member and cap. One or more apertures in the thin dielectric member define the auxiliary gap, between metal cap and bottom electrode. A further feature is that the cage, within which the protector is positioned, has one or more legs preformed such that their lower ends are pushed into positive contact with the metal cap when assembled into a closed ended hollow cap for assembly into a protector block.

REFERENCES:
patent: 2546824 (1951-03-01), Koliss
patent: 3755715 (1973-08-01), Klayum
patent: 4074337 (1978-02-01), Debortoli et al.
patent: 4132915 (1979-01-01), Wilms
patent: 4327393 (1982-04-01), Hines et al.

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