Electricity: electrical systems and devices – Safety and protection of systems and devices – High voltage dissipation
Patent
1982-02-01
1984-09-11
Salce, Patrick R.
Electricity: electrical systems and devices
Safety and protection of systems and devices
High voltage dissipation
361135, 361134, 315 36, H02H 904
Patent
active
044714025
ABSTRACT:
A disconnector for a surge arrester explosively separates an electrical lead wire, normally a ground lead wire, from the arrester to prevent a permanent fault and to provide an indication of a failed arrester. The disconnector includes an elongated, frangible insulating housing having an elongated opening disposed along and parallel to the longitudinal axis of the insulating housing; a first electrically conductive terminal disposed at a first end of the opening; a second electrically conductive terminal disposed at a second end of the opening; means for forming an arc gap disposed between the first and second terminals, including an arc gap spacer and an arc electrode being either generally flat or including a raised portion; and an explosive cartridge disposed between the first and second terminals and in contact with the arc electrode. The metallic casing of the explosive cartridge holds an explosive charge and may include a generally flat surface parallel to the longitudinal axis of the explosive cartridge for contacting a generally flat surface of the arc electrode, thereby providing means for controlling the transfer of arc generated heat to the explosive charge to assure that the explosive charge will forcefully explode to separate a ground lead wire from a damaged surge arrester.
REFERENCES:
patent: 2860210 (1958-11-01), Stoelting et al.
patent: 3017539 (1962-01-01), Robinson
patent: 3679938 (1972-07-01), Carothers et al.
patent: 3710212 (1973-01-01), Marek et al.
patent: 3869650 (1975-03-01), Cunningham et al.
patent: 4204238 (1980-05-01), Stetson
patent: 4321649 (1982-03-01), Gilberts
Product Article by General Electric, "Alugard Distribution Surge Arresters", Publication-GEA-9309B, Oct. 1973.
Joslyn Mfg. and Supply Co.
Salce Patrick R.
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