Arc arrester and switch having same

A technology of arc suppression and arcing, which is applied in the direction of electric switches, high voltage/high current switches, circuit breaker components, etc. It can solve the problems that the arc cannot be actively contacted, the electromagnetic force of the grid is weak, and the arc is difficult to achieve stable interruption. performance, stable electromagnetic force, and the effect of eliminating arcs in large current ranges and small current ranges
CN1499552AInactive Publication Date: 2004-05-26ENERGY SUPPORT CORP
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Patent Information

Authority / Receiving Office
CN ยท China
Current Assignee / Owner
ENERGY SUPPORT CORP
Publication Date
2004-05-26
Estimated Expiration
Not applicable ยท inactive patent

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Abstract

Provided is an arc extinguishing device capable of extinguishing an arc not only at a high-current zone but also at a low-current zone by improving an arc extinguishing performance. A grid 110 having grid channels 111a, 111b and an arc extinguishing member 120 having arc extinguishing member channels 121a, 121b are alternately arrayed at a given interval in a moving direction of a movable electrode. The movable electrode is made to pass the grid channels 111a, 111b and the arc extinguishing member channels 121a, 121b sequentially at open channels. Narrow grooves 112a, 112b are formed at the innermost part of the grid channels 111a, 111b. When the channels are opened, the arc is attracted and fixed to (restrained by) the narrow grooves 112a, 112b. Especially, by restraining the arc of the low-current zone in the circuit interrupter 100, a contact time of the arc with an arc extinguishing decomposition gas generated from the arc extinguishing member 120 is secured. As a result, an arc of the low current zone can also be promptly extinguished.
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Description

technical field

[0001] The invention relates to an arc-extinguishing device and a switch with the same. When the circuit is open, the arc-extinguishing device can eliminate the arc generated between the fixed electrode and the movable electrode. Background technique

[0002] For example, in Japanese Patent Publication No. 6-77417 "Arc-extinguishing Device" published on August 8, 1987, the arc-extinguishing device has a plurality of grids (grids) (magnetic bodies) with recesses for attracting arcs. A plurality of cutouts formed on the back side of the insulator (arc extinguishing member). A portion of the grid is exposed from a thin groove formed in the center of the insulator. When the circuit is open, around the arc column, due to the existence of the grid, a deflected magnetic flux distribution is generated, and the arc is driven to the inner side of the grid notch recess. Therefore, the arc is cut off by each magnetic body while extending, and the voltage of the cathode...

Claims

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