Low voltage buried wire isolator

Details Low voltage buried wire isolator Low voltage buried wire isolator

1984-05-21

1986-07-29

Pellinen, A. D.

Electricity: electrical systems and devices

Safety and protection of systems and devices

High voltage dissipation

361111, 174 78, H02H 104

Patent

active

046033696

ABSTRACT:
A low voltage buried wire isolator for interrupting the metallic path between the common grounding system in a structure and the positive grounding system of the telephone or television cable grounding systems. The isolator comprises a housing having an electrically conductive clamping assembly clamped to the metal ground sheath of the service cable. A high voltage protector such as a gas tube is electrically connected, at one of its ends, to the clamping assembly and is designed to normally prevent the flow of electrical current therethrough which is below a predetermined value. A metal fitting is connected to the other end of the high voltage protector and has an electrically conductive wire secured thereto which extends to the existing cable protective apparatus. If a power crossover should occur, the high voltage protector prevents the metal ground sheath from overheating since it is electrically insulated from the cable protective apparatus.

REFERENCES:
patent: 2959633 (1960-11-01), Palmer
patent: 3033913 (1962-05-01), Dietze
patent: 3168613 (1965-02-01), Palmer
patent: 3568128 (1971-03-01), Taylor
patent: 4264940 (1981-04-01), Castle

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