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Vacuum circuit breaker

A technology for vacuum circuit breakers and vacuum valves, which is applied to the installation of high-voltage air circuit breakers, circuits, and switchgear with metal casings, etc., and can solve the problem of increasing the use of insulating medium gas, increasing the construction cost of electrical rooms, and increasing transportation costs, etc. question

Inactive Publication Date: 2008-02-13
MITSUBISHI ELECTRIC CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, due to the need to enlarge the body container 2, there are, for example, an increase in the overall size of the gas insulated switchgear, an increase in transportation costs, an increase in the construction cost of the electrical room due to an increase in the installation space, and an increase in insulation due to the increase in the size of the body container 2. Media is SF 6 The problem of the amount of gas used

Method used

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Examples

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Embodiment Construction

[0025] 1 to 7 show a gas insulated switchgear using a vacuum circuit breaker according to the present invention. In the figure, 50 is the SF 6 Gas is sealed inside the main body container as an insulating medium, 51a is the first bus bar chamber installed on the upper part of the main body container 50, 51b is the second bus bar room adjacent to the first bus bar room 51a, and 52a, 52b are connected wirings. The bus bar of several gas insulated switchgears arranged side by side. In the bus room 51a, a breaker 53 is connected to a branch line 52b from the bus bar 52a by bolts or the like. The circuit breaker 53 disconnects and connects the branched main circuit by moving the movable contact part 53a to the left and right in FIG. 1 to contact and separate from the fixed contact part 53b. The fixed contact portion 53b is fitted to the front end of the through-conductor 54a by bolts or the like, and the through-conductor 54a extends inside the bush 54 penetrating and supported o...

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Abstract

A vacuum valve is disposed in one side across a base plate. The fixed electrode terminal at the fixed electrode end of the vacuum valve and the moving electrode terminal at the moving electrode end are supported by a pair of insulation supports erected on the base plate. The opposite side of the vacuum valve across the base plate is fitted with an operation mechanism. The operation mechanism is coupled with a contact switching link mechanism connected to the moving electrode by means of a drive means disposed inside the insulation support along the support direction.

Description

technical field [0001] The present invention relates to a vacuum circuit breaker, and more particularly to a vacuum circuit breaker suitable for use in switching devices for power switch control. Background technique [0002] Figures 8 and 9 show an example of a conventional gas insulated switchgear using a vacuum circuit breaker. Side sectional view of an insulated switchgear. In the figure, 1 is a gas insulated switchgear, and 2 is SF sealed as an insulating medium. 6 The body container of the gas, 3 is the busbar room, which accommodates the three-phase busbar 4 wired between several devices arranged in parallel. 5 is a circuit breaker for cutting off and connecting the branch main circuit branched from the busbar 4, and 6 is The upper terminal of the vacuum circuit breaker is connected to the circuit breaker 5 through the connecting conductor 5a, and 7 is a circuit breaker for disconnecting and connecting the circuit by connecting the connecting conductor 7a to the low...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01H33/66H02B13/00H01H33/666H02B13/02
CPCH01H33/666H01H2033/66223H01H33/66207H01H33/66H01H13/02
Inventor 大城尊士小林稔後藤圭二小山和昭
Owner MITSUBISHI ELECTRIC CORP