Electricity: electrical systems and devices – Safety and protection of systems and devices – High voltage dissipation
Patent
1984-08-03
1987-02-17
Wong, Peter S.
Electricity: electrical systems and devices
Safety and protection of systems and devices
High voltage dissipation
361129, H02H 906
Patent
active
046444416
ABSTRACT:
A pair of main electrodes are airtightly attached to their corresponding end openings of an insulating cylinder so that their discharge surfaces are opposed to each other with a gap between them in the insulating cylinder. An intermediate electrode is airtightly attached to the central portion of the insulating cylinder so that its discharge surface coaxially surrounds the space between the discharge surfaces of the main electrodes and faces the lateral faces of the main electrodes to define the discharge gaps. Electrode activators are contained in cavities or grooves in or on the main electrodes so as to be isolated from the discharge surfaces thereof, or are arranged on one of the respective discharge surfaces of the main and intermediate electrodes. When the arrester performs a continuous discharging operation, the electrodes without electrode activators thereon are melted by the heat generated by a discharged current, thereby short-circuiting the main and intermediate electrodes to establish an electrode short-circuit mode. Thus, open breakage, attributed to the burning of the arrester and its holder, may be avoided.
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Hoff Marc S.
Kabushiki Kaisha Sankosha
Wong Peter S.
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