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Electrical switchgear with recycling of cut-off gases

A technology for electric switches and shells, which is applied in the direction of electric switches, circuit breakers with excessive current, overload protection circuit breakers, etc., and can solve problems such as leakage

Inactive Publication Date: 2009-12-23
SCHNEIDER ELECTRIC IND SAS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the shape of the recess, characterized by the presence of a channel from the arc generation area to the chimney-like vent, can generate hot gases and vapors that are sent in the direction of the open area of ​​the contacts and thus cause the arc to leak from the arc chute to the contacts
This leak is accompanied by repeated refiring

Method used

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  • Electrical switchgear with recycling of cut-off gases
  • Electrical switchgear with recycling of cut-off gases
  • Electrical switchgear with recycling of cut-off gases

Examples

Experimental program
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Embodiment Construction

[0040] according to figure 1 , 2 and 3, the electrical switching device 30 comprises a housing 31 made of molded plastic material in which at least one contact associated with at least one movable contact 33 is arranged. Stationary contact 32. One or more fault detection means, in particular for short circuit detection, act on the actuating mechanism 34 which controls the opening of the movable contact 33 .

[0041] This housing 31 , due to its shape, forms a longitudinal geometric reference plane xz.

[0042] In the illustrated embodiment, the electrical switching device comprises two U-shaped stationary contacts 32 respectively connected to electrical connection terminals. A movable contact 33 capable of translating by the action of actuating means 34 can be electrically connected to the two stationary contacts 32 . The movable contact 33 has two contact areas 36 each capable of cooperating with the stationary contact 32 respectively. Accordingly, corresponding to the s...

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PUM

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Abstract

The switchgear has a flow pipe with an exhaust duct (3) extending from a sink hole (4) towards an opening (18), along a lateral wall (11), where the duct has a constant or crescent section. The opening is equal to the section of the duct and is placed opposite to electrical contacts of an opening volume (35). Gas present in an exchange space is injected into the volume via the duct, where the gas is cooled while circulating in the duct.

Description

technical field [0001] The invention relates to an electrical switching device comprising: a housing having a longitudinal geometric reference plane, a pair of separable electrical contacts arranged in an open space, an arc chute opening towards said open space, said arc chute The plate can be described by two parallel side walls placed on each side of the geometric reference plane, a rear wall located away from said open space, a bottom wall and a top wall. The arc chute comprises a stack of at least two deionization fins separated from each other by an exchange space, each fin having a leading edge designed to be exposed to the arc. At least one exchange space is connected to at least one removal pipe via at least one removal hole. Background technique [0002] Leakage in switching devices such as circuit breakers, switches or contactors causes their electrical contacts to open at high speed. This high-speed separation of the contacts is often accompanied by arcing. The...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01H73/18H01H9/30H01H9/34
CPCH01H9/346H01H73/045H01H2009/348H01H9/342H01H71/0235
Inventor 安德烈·克洛特勒克里斯琴·菲韦特休格斯·菲利帕蒂贝努特·哈格让-卢克·庞西尼尔索菲·瑟万特
Owner SCHNEIDER ELECTRIC IND SAS