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Gas insulated electric equipment

A technology of electrical equipment and gas insulation, applied in the direction of electrical components, circuits, electrical switches, etc., can solve the problems of reduced electrical performance, corrosion of movable contacts and fixed contacts, etc., and achieve the effect of preventing insulation from deteriorating

Inactive Publication Date: 2007-07-18
JAPAN AE POWER SYST
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

As mentioned above, there is a disadvantage that especially when attached to the movable contact and the fixed contact in the airtight container, the movable contact and the fixed contact corrode, thereby reducing the conduction performance

Method used

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  • Gas insulated electric equipment
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Examples

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Embodiment Construction

[0022] The best embodiments of the present invention are comprehensively described below.

[0023] (1) A gas-insulated electrical device comprising: an airtight container enclosing an insulating gas; and a vacuum circuit breaker and a disconnector provided in the airtight container in a state of being electrically insulated from the airtight container, the vacuum circuit breaker being a current interrupter When the arc light does not leak out of the vacuum container, the above-mentioned insulating gas is made of CF with a volume ratio of 40% or more. 3 I and the liquefaction temperature ratio of the CF 3 I is also lower and the global warming coefficient is lower than that of SF 6 A mixed gas composed of other insulating gases that are still smaller, the pressure of the mixed gas is 0.1-0.3MPa·abs. Other insulating gases preferably have a boiling point lower than CF 3 I is also low, and has electrical insulation, is non-condensing or low-condensing, than CF 3 I is also a g...

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PUM

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Abstract

The invention provides an efficient gas insulated electrical machinery, capable of preventing the insulativity of the insulated electrical machinery from being aggravated by using gases containing CF3I as an insulated gas having small warmer coefficient. The device includes: a sealing container for enclosing an insulated gas; a vacuum circuit breaker and cutter, which are mounted in the sealing container and are electrical-insulated with the sealing container, characterized in that, the vacuum circuit breaker is able to prevent the arc light from leaking out the vaccum container when the current is turned off, the insulated gas is a mixed gas comprising CF3I having volumetric ratio of over 40% and the other insulated gas having lower condensing temperature than CF3I and smaller earth warmered coefficient than SF6, the air pressure of the mixed gas is 0.1-0.3 MPa.abs, moreover, there is provided with an adsorbent, which can adsorb a low-molecular-weight compound produced by the dissociation of CF3I.

Description

technical field [0001] The present invention relates to gas insulated electrical equipment insulated with an electrical insulating gas for use in a substation or a switching station, and particularly to a gas insulated switchgear suitable for suppressing warming in consideration of effects on global warming. Background technique [0002] For gas-insulated switchgear in substations or conversion stations, SF is used as the insulating gas enclosed in its airtight container 6 gas. The insulating gas is chemically stable, has extremely low toxicity, and has excellent electrical insulation performance and arc suppression performance. [0003] However, while SF 6 The gas is an excellent gas with no problems related to the destruction of the ozone layer or toxicity, but the only one with a large global warming coefficient is CO 2 The disadvantage of 23,900 times of that of carbon dioxide has become an environmental problem. Considering environmental problems, in recent years, as...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02B13/055H01H33/66
Inventor 大森庄司八塚裕彦青柳健二筑紫正范山极时生
Owner JAPAN AE POWER SYST
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