Current-limiting surge arrester disconnector

Details Current-limiting surge arrester disconnector Current-limiting surge arrester disconnector

1986-06-09

1987-12-01

Paschall, M. H.

Electricity: electrical systems and devices

Safety and protection of systems and devices

High voltage dissipation

361 56, 361124, 361134, H02H 104

Patent

active

047108479

ABSTRACT:
A protective device for use with a surge arrester to prevent fracturing of the porcelain body of a failed arrester includes a fast-operating switch which shunts a current-limiting fuse. The switch is operated by ignition of a chemical propellant charge, thereby rapidly diverting fault current to the fuse and additionally isolating the arrester from ground. The switch has a moving contact in the form of a gas-driven piston which strikes a separable terminal connected to a ground lead.

REFERENCES:
patent: 2315320 (1943-03-01), Earle
patent: 3179851 (1965-04-01), Smith, Jr.
patent: 4062054 (1977-12-01), Simokat
patent: 4204238 (1980-05-01), Stetson
patent: 4308566 (1981-12-01), Imataki et al.
patent: 4471402 (1984-09-01), Cunningham
patent: 4503414 (1985-03-01), Sykes et al.

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