Line protector

Details Line protector Line protector

1977-08-19

1979-06-19

Salce, Patrick R.

Electricity: electrical systems and devices

Safety and protection of systems and devices

High voltage dissipation

361119, 337 32, 337 33, 361120, 361124, H02H 322

Patent

active

041588690

ABSTRACT:
A line protector for protecting telephone lines and the like from over-voltage or over-current conditions includes a primary arrester element and a secondary arrester element that provides back-up protection upon a fail open of the primary arrester element. The primary arrester comprises a gas tube having spaced electrodes to form an arc gap therebetween. The secondary arrester includes a pair of electrodes axially aligned with the gas tube and separated by an insulating spacer to provide an air gap therebetween. The air gap of the secondary arrester is maintained at a predetermined spacing such that the breakdown voltage thereof is greater than the rated breakdown voltage across the arc gap of the gas tube but less than the breakdown voltage across said arc gap should the gas tube fail open as by being vented to atmosphere.

REFERENCES:
patent: 2430206 (1947-11-01), Beck et al.
patent: 3569786 (1971-03-01), Kunugi
patent: 3651440 (1972-03-01), Bahr et al.
patent: 3755715 (1973-08-01), Klayum et al.
patent: 4002952 (1977-01-01), Menninga

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