High-tension circuit-breaker with damper

Details High-tension circuit-breaker with damper High-tension circuit-breaker with damper

1997-09-19

1999-03-02

Friedhofer, Michael A.

High-voltage switches with arc preventing or extinguishing devic

Arc preventing or extinguishing devices

Air-current blowout

H01H 3388

Patent

active

058774653

ABSTRACT:
A high-tension circuit-breaker includes fixed contacts and a mobile assembly including mobile contacts. The mobile assembly is connected to an operating mechanism by an operating rod. The circuit-breaker includes a device for damping movement of the rod at the end of a tripping maneuver. This device includes a damper piston entrained by movement of the rod at the end of the tripping maneuver and moving in a cylinder in one direction such that the volume between the piston and an end wall of the cylinder increases during the maneuver, causing a pressure drop in this volume.

REFERENCES:
patent: 4041264 (1977-08-01), Grune
patent: 4459447 (1984-07-01), Arimoto
patent: 5001314 (1991-03-01), Thuries et al.
patent: 5567923 (1996-10-01), Perret

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