Circuit-breaker with a disconnector

Details Circuit-breaker with a disconnector Circuit-breaker with a disconnector

1998-05-06

1999-04-27

Donovan, Lincoln

High-voltage switches with arc preventing or extinguishing devic

Arc preventing or extinguishing devices

Air-current blowout

218140, 218 14, H01H 3304

Patent

active

058981519

ABSTRACT:
A circuit-breaker including main contacts and arcing contacts includes a shaft carrying a first lever connected to the moving main contact. A hub is mounted inside the shaft and carries a second lever connected to the moving arcing contact; the shaft and the hub being shaped over a certain portion into two sectors between which a spring is disposed. A single control causes the shaft to rotate so that the shaft firstly causes the hub to rotate via the spring, the shaft and the hub rotating respectively causing the moving main contact and the moving arcing contact to move, and the shaft secondly rotates to a further extent, with the hub being prevented from rotating by action from an abutment. This arrangement makes it possible to implement a simple synchronization of the main contacts opening before the arcing contacts.

REFERENCES:
patent: 3399286 (1968-08-01), Kerr, Jr.
patent: 3646292 (1972-02-01), Barkan et al.
patent: 5495084 (1996-02-01), Meyer et al.
patent: 5561280 (1996-10-01), Blatter

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