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vacuum circuit breaker

A technology of vacuum circuit breakers and suppressors, which is applied to high-voltage air circuit breakers, circuits, grounding devices of switchgear, etc., and can solve problems such as forgetting to ground operations

Active Publication Date: 2017-08-11
MITSUBISHI ELECTRIC CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] In the conventional grounding of high-voltage circuits, for example, as shown in Patent Document 2, a person makes the grounding rod for discharging come into contact with the charging part to achieve grounding, but there is a problem of forgetting to perform the grounding work.
In addition, although there are cases where the CR suppressor is placed on a fixed part in a general switchboard, when the CR suppressor is mounted on a fixed part in a switchboard, it is necessary to perform grounding on the fixed part side in the switchboard

Method used

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Embodiment approach 1

[0045] Below, based on Figure 1 to Figure 9 , Embodiment 1 of the present invention will be described, and the same or corresponding members and parts will be described with the same reference numerals in each figure. figure 1 It is a side view showing the connection position of the vacuum circuit breaker according to Embodiment 1 of the present invention. figure 2 It is a perspective view showing the connection position of the vacuum circuit breaker according to Embodiment 1 of the present invention. image 3 It is a side view showing the breaking position of the vacuum circuit breaker according to Embodiment 1 of the present invention. Figure 4 It is a rear view showing the breaking position of the vacuum circuit breaker according to Embodiment 1 of the present invention. Figure 5 It is a perspective view showing the breaking position of the vacuum circuit breaker according to Embodiment 1 of the present invention. Figure 6 It is a side view showing the grounding po...

Embodiment approach 2

[0065] based on Figure 10 to Figure 15 , Embodiment 2 of the present invention will be described, and the same or corresponding members and parts will be described with the same reference numerals in each figure. Figure 10 It is a side view showing the connection position of the vacuum circuit breaker according to Embodiment 2 of the present invention. Figure 11 It is a perspective view showing the connection position of the vacuum circuit breaker according to Embodiment 2 of the present invention. Figure 12 It is a side view showing the breaking position of the vacuum circuit breaker according to Embodiment 2 of the present invention. Figure 13 It is a perspective view showing the breaking position of the vacuum circuit breaker according to Embodiment 2 of the present invention. Figure 14 It is a side view showing the grounding position of the vacuum circuit breaker according to Embodiment 2 of the present invention. Figure 15 It is a perspective view showing the gr...

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Abstract

[Problem] The problem addressed by the present invention is to provide a vacuum circuit breaker capable of increased compactness by means of reliably grounding a mobile-side terminal in a vacuum circuit breaker main body and mounting a CR suppressor to the vacuum circuit breaker main body. [Solution] The vacuum circuit breaker, which is provided with a vacuum circuit breaker main body, which has a mobile terminal and is inserted into and pulled out from within a panel, and a CR suppressor, which is installed as a surge absorber in the vacuum circuit breaker main body, is equipped with: a grounding arm support shaft that is rotatably supported by the vacuum breaker main body; a grounding arm attached to both ends of the grounding arm support shaft; a grounding arm connection body connected to the grounding arm; and a drive means that drives the grounding arm with the grounding arm support shaft as a fulcrum, and that contacts the grounding arm connection body connected to the grounding arm to the mobile terminal, grounding same.

Description

technical field [0001] The present invention relates to, for example, a vacuum circuit breaker equipped with a CR suppressor, and particularly relates to a grounding structure of the CR suppressor mounted in the vacuum circuit breaker. Background technique [0002] In the conventional grounding of a high-voltage circuit, for example, as disclosed in Patent Document 2, a person makes a grounding rod for discharging come into contact with a charging part to achieve grounding, but there is a problem of forgetting to perform the grounding work. In addition, although the CR suppressor may be arranged at a fixed part in a general switchboard, when the CR suppressor is mounted on a fixed part in a switchboard, it is necessary to ground the fixed part in the switchboard. [0003] Figure 16 It is a side cross-sectional view of a case where a CR suppressor is mounted on a rear surface side fixing portion of a vacuum circuit breaker main body 120 in a conventional switchboard. The sw...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02B11/28H01H33/46H02B11/133
CPCH02B11/133H02B11/28
Inventor 稻叶繁后籐圭二山中丈明十鸟洋山本敬太
Owner MITSUBISHI ELECTRIC CORP