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Electric current switching apparatus

A technology of current interruption and side electrodes, which is applied to high-voltage air circuit breakers, high-voltage/high-current switches, circuits, etc., and can solve the problems of current on and off performance degradation of current interrupters

Inactive Publication Date: 2012-11-07
MITSUBISHI ELECTRIC CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, since low pressure or no gasification will reduce the current making and breaking performance of the current interrupter, an improvement to improve it is required.

Method used

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  • Electric current switching apparatus
  • Electric current switching apparatus
  • Electric current switching apparatus

Examples

Experimental program
Comparison scheme
Effect test

Embodiment approach 1

[0038] figure 1 It is a figure which shows the cross-sectional structure of the current interrupter 1 of this embodiment. The current interrupter 1 is, for example, a circuit breaker arranged in a gas-insulated switchgear, a circuit breaker with a current interruption function, or a grounding interrupter with a current interruption function. figure 1 The cross-sectional structure of its current interrupting part is shown in .

[0039] The current interrupter 1 is configured in, for example, a SF enclosed with 6 In a metal container (not shown) such as insulating gas. The current interrupter 1 is constituted by a movable-side electrode part 2 and a fixed-side electrode part 3 arranged to face each other.

[0040] The movable side electrode part 2 includes: a movable side main contact 4 formed in a cylindrical shape; point 5; a movable side arc contact 15 provided in a cylindrical shape at the front end of the movable contact 5 and formed of an arc-resistant material; Mov...

Embodiment approach 2

[0074] Figure 8 It is a figure which shows the cross-sectional structure of the current interrupter 21 of this embodiment. The current interrupter 21 is, for example, a circuit breaker arranged in a gas insulated switchgear, a circuit breaker with a current switching function, or a grounding interrupter with a current switching function. Figure 8 The cross-sectional structure of its current interrupting part is shown in .

[0075] The current interrupter 21 is configured in, for example, a SF enclosed 6 In a metal container (not shown) such as insulating gas. The current interrupter 21 is composed of a movable-side electrode part 2 and a fixed-side electrode part 22 arranged to face each other so that their central axes coincide with each other. The definition of the central axis is the same as that of the first embodiment. In addition, the structure of the movable side electrode part 2 is the same as figure 1 The situation is the same. The permanent magnets 9 and 23 ...

Embodiment approach 3

[0085] Figure 9 It is a figure which shows the cross-sectional structure of the current interrupter 25 of this embodiment. The current interrupter 25 is, for example, a circuit breaker arranged in a gas insulated switchgear, a circuit breaker with a current switching function, or a grounding interrupter with a current switching function. Figure 9 The cross-sectional structure of its current interrupting part is shown in .

[0086] The current interrupter 25 is configured in, for example, a SF 6 In a metal container (not shown) such as insulating gas. The current interrupter 25 is constituted by the movable-side electrode part 2 and the fixed-side electrode part 26 arranged to face each other so that their central axes coincide. The definition of the central axis is the same as that of the first embodiment. In addition, the structure of the movable side electrode part 2 is the same as figure 1 The situation is the same. Permanent magnets 9 , 27 , and 28 are arranged in...

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PUM

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Abstract

Disclosed is an electric current switch apparatus, wherein a fixed-side electrode unit and a movable-side electrode unit are positioned in opposition with a respective common central axis therebetween, and which switches electric current that flows between the electrodes by a movable contact element, which is disposed upon the movable-side electrode unit, shuttling along the central axis and contacting and separating from a fixed contact element, which is disposed upon the fixed-side electrode unit. The electric current switch apparatus comprises a plurality of permanent magnets, which are disposed upon at least one of the fixed-side electrode unit and the movable-side electrode unit, each respective main body being positioned upon the center axis, the respective directions of magnetism being aligned in the center axis direction, and adjacent pairs of permanent magnets are made to abut such that the same poles in each pair are facing one another.

Description

technical field [0001] The present invention relates to a current interrupter for switching on and off current, for example, relates to a current interrupter arranged in a gas insulated switchgear. Background technique [0002] In gas insulated switchgear, SF is enclosed in a metal container 6 (sulfur hexafluoride) gas and other insulating gases, and equipped with current interrupters such as circuit breakers. [0003] However, in recent years, as a measure to reduce the environmental load, it is desired to reduce SF 6 The pressure of the gas or the removal of SF 6 Gas handling. However, since underpressure or non-gasification degrades the current making and breaking performance of the interrupter, an improvement to improve this is required. [0004] In addition, in recent years, along with the increase in capacity of gas insulated switchgears, it is required to improve the current switching performance accordingly. [0005] Patent Document 1 describes a gas-insulated i...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01H33/18
CPCH01H1/385H01H33/182
Inventor 藤田大辅柏木纮典中内慎一朗
Owner MITSUBISHI ELECTRIC CORP