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switchgear

A switchgear and grounding device technology, applied in the field of switchgear, can solve problems such as high price, not economical, and insulation performance degradation, and achieve the effect of suppressing investment

Inactive Publication Date: 2016-02-24
HITACHI IND EQUIP SYST CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] In addition, since the air is thin when the altitude is high, the heat dissipation by convection is poor, and since the discharge start voltage decreases in proportion to the air pressure, the insulation performance decreases, so in high places (such as 1000 to 4000m), it is necessary to select a higher The equipment of the style of the insulation resistance becomes an expensive equipment and is not economical

Method used

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] figure 1 Embodiment 1 of the switchgear of this invention is shown. In this figure, the cabinet 100 of the switchgear of the present embodiment is divided into front side ( figure 1 the right side) and the back side ( figure 1 On the left side of the front side), the control room 21, the breaker room 17 and the operator room 18 of the grounding device are divided and formed in the order from top to bottom on the front side, and the busbar room is formed in the order from top to bottom on the back side 19 and cable room 20. The breaker room 17 on the front side is separated from the operator room 18 of the grounding device by a support plate 25 , and the bus bar room 19 and the cable room 20 on the back side are separated by a partition plate 24 .

[0023] The vacuum interrupter 1 is arranged in the above-mentioned interrupter chamber 17, and the solid insulated busbar 4 is arranged in the busbar chamber 19. The solid insulated busbar 4 is provided with a ground layer...

Embodiment 2

[0039] figure 2 Embodiment 2 of the switchgear of this invention is shown. The switchgear of this embodiment shown in this figure is the same as that described in Embodiment 1 figure 1 The structures are substantially the same, and the structures different from those in Embodiment 1 will be described below.

[0040] That is, in figure 2 In the shown embodiment 2, the grounding device 5 is arranged so that a part is located in the cable chamber 20, and the remaining part of the grounding device 5 is located in the operator room 18 of the grounding device, and the front end of the U-shaped insulator 5A is located in the The structural seal of the operator compartment 18 of the grounding device ( figure 2 slash), the breaker chamber 17 and the operator chamber 18 of the grounding device form a sealed space of a larger box body, and the sealed space is formed into the same sealing structure as the breaker chamber 17 of Embodiment 1 ( figure 2 The slashed part), and the bre...

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Abstract

The present invention provides a switchgear capable of obtaining reliability with respect to insulation, reducing the installation space of the equipment, realizing miniaturization of the device, and suppressing investment for installation of the equipment. In order to solve the above-mentioned problems, the switchgear of the present invention is provided with: a vacuum interrupter installed in the interrupter room divided by the ground metal plate; a bus bar installed in the bus bar room and connected to the vacuum interrupter through a conductor; a cable , which is set in the cable room, and one end is connected to the load side; the grounding device, which is operated by the operator of the grounding device in the operator room of the grounding device, is connected to the above-mentioned vacuum interrupter through a conductor, and is connected to the above-mentioned At the other end of the cable, the above-mentioned bus bar is formed by a solid insulated bus bar, and the conductor connecting the above-mentioned vacuum interrupter and the bus bar and the conductor connecting the above-mentioned vacuum interrupter and the grounding device are formed by solid insulated conductors, and the above-mentioned interrupter chamber and the grounding device are sealed structure.

Description

technical field [0001] The present invention relates to switchgear, in particular to switchgear suitable for substations and the like. Background technique [0002] In the substation, switchgear (enclosed switchboard) is provided, and the switchgear is retracted: a vacuum breaker for blocking load current or accident current; a circuit breaker for ensuring the safety of workers during load maintenance and testing And grounding switch; detection device for detecting system voltage and system current; and protection relay, etc. [0003] The insulation methods of the switchgear are various. In the past, in addition to air insulation and combined gas insulated switchgear (GIS) using SF6 gas, in the past, from the perspective of adapting to the environment, there were also solid insulation, compressed air insulation, The full vacuum insulation method and the use of various insulation methods have accelerated the miniaturization of each component of the circuit breaker, circuit b...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02B13/02
CPCH02B13/01H02B13/0354H02B13/075H01H33/66H02B13/02H01H33/66207
Inventor 薮雅人土屋贤治森田步
Owner HITACHI IND EQUIP SYST CO LTD