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Fire extinguishing gas filter arrangement and current switchgear including such filter arrangement

A filter device and current switch technology, which is applied in high-voltage/high-current switches, electric switches, transportation and packaging, etc., can solve the problem of damage to electrical switchgear components, achieve the effects of improving filtration efficiency, compact structure, and preventing local concentration

Active Publication Date: 2022-03-04
SCHNEIDER ELECTRIC IND SAS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In this case, the overvoltage can seriously damage the electrical switching device and the components located around it

Method used

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  • Fire extinguishing gas filter arrangement and current switchgear including such filter arrangement
  • Fire extinguishing gas filter arrangement and current switchgear including such filter arrangement
  • Fire extinguishing gas filter arrangement and current switchgear including such filter arrangement

Examples

Experimental program
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Effect test

Embodiment Construction

[0040] figure 1 and 2 A current switching device 2 with separable electrical contacts and an air switch is shown.

[0041] In this example, the switchgear 2 is a low voltage and high current multi-pole circuit breaker. For example, the switchgear 2 is designed to operate at voltages lower than or equal to 1000 volts AC and 1500 volts DC and at currents with a short-circuit strength higher than or equal to 1 kA.

[0042] In this case, the switching device 2 is designed to act on a three-phase current, comprising for this purpose three separate poles, each pole being associated with one phase of the current.

[0043] As a variant, the switching device 2 can be different. It can be eg a contactor or a DC breaker. The switchgear may also comprise a different number of poles, for example a single-pole or four-pole switchgear.

[0044] The switching device 2 is intended to be connected to an electrical circuit in order to protect it from electrical faults, such as short circuit...

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Abstract

The invention relates to a fire extinguishing gas filter device and a current switchgear comprising such a filter device, a fire extinguishing gas filter device (50) for a current switchgear having separable contacts and comprising an arc extinguishing chamber, comprising the following parts assembled together: - An inlet part (52) for extinguishing gas, made of metallic material and comprising: an inlet hole (60) for fluid connection with the extinguishing gas outlet of the switchgear; an outlet hole (66); a flared wall (62, 64, 72) extending between said inlet and outlet holes; a gas diffuser (54) covering said outlet hole, the gas diffuser being planar in shape and comprising through holes; A diffuser (56), made of porous metal foam, is placed at the output of the gas diffuser.

Description

technical field [0001] The invention relates to an extinguishing gas filter device for a current switchgear. The invention also relates to a current switching device comprising such a filter device. Background technique [0002] Electrical units such as circuit breakers or contactors are known and make it possible to selectively interrupt the flow of current in an electrical circuit, for example in a distribution network for domestic or industrial use. [0003] The switching device includes separable electrical contacts connected to input and output terminals for electrical current. The electrical contacts are selectively movable between a closed position, in which they allow electrical current to flow between the terminals, and an open position, in which they are separated from each other to prevent the electrical current from flowing. [0004] It is particularly known that an electric arc may form between two electrical contacts when a current flows therein and these ele...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01D46/00B01D46/24A62C3/16A62C31/00
CPCA62C3/16A62C31/00B01D46/2418B01D46/56H01H9/342H01H33/74H01H33/53B01D2267/40B01D39/2051B01D46/12B01D46/543
Inventor M.里瓦尔C.多梅内奇D.罗塔
Owner SCHNEIDER ELECTRIC IND SAS