Power breaker

Details Power breaker Power breaker

1997-08-29

1999-07-20

Friedhofer, Michael A.

High-voltage switches with arc preventing or extinguishing devic

Arc preventing or extinguishing devices

Air-current blowout

218 72, H01H 3378

Patent

active

059258632

ABSTRACT:
The power breaker is provided with a contact arrangement which is equipped with erosion-resistant contact members and has a stationary contact member (4), a contact member (4) which can move along a central axis (6) and an insulating nozzle (6) which concentrically surrounds the contact members (3, 4) and has a constriction (6). The insulating nozzle (6) is manufactured from an erosion-resistant plastic and is structured such that erosion channels which are formed run at right angles to the direction of the electrical field load. This insulating nozzle emits gases during disconnection, which particularly effectively support the production of blowing pressure in the arc zone.

REFERENCES:
patent: 4328403 (1982-05-01), Frink et al.
patent: 4562322 (1985-12-01), Yamaguchi et al.
patent: 4791256 (1988-12-01), Yonezawa et al.
patent: 5274205 (1993-12-01), Tsukushi et al.
"Ablation Controlled Arcs", Ruchti and Niemeyer, IEEE Transactions on Plasma Science, vol. PS-14, No. 4, Aug. 1986, pp. 423-434.

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