Gas insulated switchgear

A technology of gas-insulated opening and closing and container, which is applied in the direction of switchgear, setting of switchgear, setting of switchgear with metal casing, etc., which can solve the problem of peeling off of low-friction materials, increased friction, and scattering of lubricating paste or lubricating oil or deterioration

Inactive Publication Date: 2015-06-24
KK TOSHIBA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] In the above-mentioned conventional gas insulated switchgear, there is a problem that the grease or lubricating oil in the sliding part scatters or deteriorates due to long-term use, and the frictional force increases.
[0011] In addition, when the sliding area of ​​the sliding part in the conventional gas insulated switchgear is large, low-friction materials such as synthetic resin materials represented by Teflon (registered trademark) are sometimes used, but due to long-term use, Sometimes the low friction material peels off from the substrate
Therefore, there is a problem in the adhesion with the substrate

Method used

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  • Gas insulated switchgear
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Examples

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Embodiment Construction

[0022] Embodiments of the present invention will be described below with reference to the drawings.

[0023] figure 1 It is a side view showing the configuration of the gas insulated switchgear 10 according to the embodiment of the present invention. figure 2 It is a figure which shows the cross section of the breaking part 30 inside the bus-bar integrated circuit breaker 27. image 3 It is a figure which shows the cross section of the shaft 37 which rotates the lever member 35 which drives the movable contactor 33. As shown in FIG.

[0024] like figure 1 As shown, in the gas insulated switchgear 10, the circuit breaker 20 is installed such that the axis of the container 21 is perpendicular to the mounting surface. A current transformer 23 is provided at an upper outlet portion 22 a of the breaker 20 , and is connected to a cable distribution box 26 via a circuit breaker 24 and a ground switch 25 . In addition, the lower outlet portion 22 b of the breaker 20 is connected ...

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PUM

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Abstract

A gas-insulated switchgear of which frictional force and abrasion amount at a sliding portion are small, and capable of maintaining a state having the small frictional force and abrasion amount for a long time is provided. Insulating gas is sealed in a container of a bus integral disconnecting switch 27 of a gas-insulated switchgear 10, and a movable side contact portion 31, a fixed side contact portion 32, and a movable contact 33 are provided to constitute a disconnecting portion 30. Besides, a hard carbon film 50 is formed at an outer peripheral surface of the movable contact 33 except portions which are in contact with contact terminals 32a of the fixed side contact portion 32 under a state in which the movable contact 33 is inserted into the fixed side contact portion 32 and electrically connected therewith and portions which are in contact with contact terminals 31a of the movable side contact portion 31 under an electrically disconnected state.

Description

technical field [0001] Embodiments of the present invention relate to a gas insulated switchgear. Background technique [0002] Gas insulated switchgear includes switches and bus bars for high power. The switch for high power is a breaker that cuts off a large current in an accident, a circuit breaker that connects or cuts off a circuit, and a grounding switch that obtains grounding. etc., the bus is connected to a circuit such as a transformer. For example, if a gas-insulated switchgear fails, major problems such as power outages may occur in the power transmission system. Therefore, in the gas insulated switchgear, high reliability is required in terms of performance, and a maintenance-free device that does not require power system shutdown is required. [0003] As mentioned above, the gas insulated switchgear includes various switches, and there are many sliding parts in the switch mechanism part or the contact part. Moreover, when separating a bus bar, the separation ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02B13/02H01H33/64
CPCH01H1/385H01H1/60H01H3/62H02B13/035
Inventor 白井英明中野修武井雅文藤原金春椎木元晴
Owner KK TOSHIBA
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