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Enclosed Switchgear

A switchgear, closed-type technology, applied in the direction of switchgear, fully enclosed busbar device, switchgear setting, etc., can solve problems such as insulation breakdown

Active Publication Date: 2016-08-17
KK TOSHIBA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] As mentioned above, the nearby metal powder 6 and attached metal powder 7 may cause insulation breakdown, so the existence of the metal powder 6 and 7 becomes a constraint on the insulation design

Method used

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Experimental program
Comparison scheme
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no. 1 approach

[0038] [constitute]

[0039] use Figure 1 ~ Figure 3 A first embodiment of the present invention will be described. like figure 1 As shown, the first embodiment of the present invention is that the surface of the high voltage conductor 1 is coated with a resistive film 12 having resistive properties. The resistive film 12 is made of material powder having resistive properties or a resin mixed with the material powder. In addition, the volume resistivity of the resistive film 12 is set to be not less than 1E7Ω·cm and not more than 1E11Ω·cm.

[0040] [Effect]

[0041] In the first embodiment having the above configuration, as figure 2 As shown, even when the resistive film 12 is charged, the charged charge 17 can be leaked through the leakage resistance RL of the resistive film 12 in a relatively short time. That is, the resistive film 12 can attenuate a direct-current electric field in a short time, and can reduce dust collection performance. Therefore, it is difficul...

no. 2 approach

[0049] [constitute]

[0050] Next, use Figure 4 A second embodiment will be described. like Figure 4 As shown, the second embodiment is characterized in that it is composed of a diamond-like carbon film (Diamond-like Carbon) (hereinafter referred to as a DLC film) 13 figure 1 The resistive film 12 is shown.

[0051] [Effect]

[0052] In the second embodiment having the above configuration, in addition to the functions and effects of the above-mentioned first embodiment, there are also unique functions and effects as follows. That is, in the second embodiment, the lubricity and peelability of the film surface of the DLC film 13 used as the resistive film 12 are extremely good.

[0053] Therefore, even if the fine metal powder 5 flying to the vicinity of the high-voltage conductor 1 adheres to the DLC film 13, it slides off the DLC film 13 without staying. Therefore, the residence time of the fine metal powder 5 in the DLC film 13 can be significantly shortened, and the...

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Abstract

A closed type switchgear is coated with a resistance film (12) having resistance characteristics on the surface of a high-voltage conductor (1). The resistive film (12) is formed of material powder having resistive properties or a resin mixed with the material powder, and has a volume resistivity of not less than 1E7Ω·cm and not more than 1E11Ω·cm.

Description

technical field [0001] Embodiments of the present invention relate to an enclosed switchgear in which insulation performance is improved. Background technique [0002] Generally, an enclosed type switchgear is used for a gas insulated switchgear or the like. Enclosed switchgear is constructed by accommodating high-voltage conductors and enclosing insulating gas in a closed container. Since it is desired to reduce the cost and environmental load of an enclosed switchgear, downsizing of the device is desired. For this reason, the compactness of closed containers based on rationalization of insulation design and three-phase common boxing has been developed. [0003] However, the size of the enclosure of an enclosed switchgear is basically determined by the insulation and thermal design. When determining the insulation design, the degree of influence on the insulation performance when there is metal powder in the closed container becomes a research point. For this, use Figu...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02G5/06H02B13/02H02B13/055H05F1/02
CPCH02G5/063
Inventor 野岛健一安冈孝伦石渡裕
Owner KK TOSHIBA