Electricity: electrical systems and devices – Safety and protection of systems and devices – High voltage dissipation
Patent
1987-12-22
1989-05-02
Pellinen, A. D.
Electricity: electrical systems and devices
Safety and protection of systems and devices
High voltage dissipation
361117, 361118, 31323111, 313244, H02H 904
Patent
active
048273708
ABSTRACT:
An enclosure for electric device, in particular for surge arrester, comprises an outer, cylindrical envelope and an inner wall both made of electrically non conducting materials. One of the ends of the envelope is closed while the other is open. An electrode with a principal portion inside the enclosure extends through the envelope and projects outside the latter. Bolt anchors are used for fixing the enclosure on a mechanical support and for mounting a closure device on the open end of the envelope. The material constituting the inner wall is impervious to humidity and protects the envelope against breaking thereof by thermal shock caused for example by the production of an electric arc within the enclosure, while the material constituting the cylindrical envelope is a synthetic insulating material capable of withstanding a high mechanical tension. The envelope is molded on the inner wall and around the electrode and the bolt anchors, whereby the inner wall and the electrode are integrated to the envelope, and the bolt anchors are fixedly attached to the synthetic insulating material.
REFERENCES:
patent: 3702419 (1972-11-01), Carothers et al.
patent: 4404614 (1985-10-01), Koch et al.
patent: 4547831 (1985-10-01), Hellman
patent: 4587592 (1986-05-01), Nakano et al.
patent: 4729053 (1988-03-01), Maier et al.
Bourdages Michel
Dumont Daniel
Hamel Andre
St-Jean Guy
Hydro-Quebec
Pellinen A. D.
Williams H. L.
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