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Three-phase integrated gas isolated bus

A technology of gas insulation and busbar, which is applied in the direction of fully enclosed busbar devices, electrical components, high-voltage air circuit breakers, etc., can solve the problems of the size limitation of the cross-section of the busbar shell, and achieve the effect of compact structure

Inactive Publication Date: 2003-05-21
HITACHI LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] In the prior art, in consideration of ensuring the compact structure of the gas insulated switchgear, when the branch busbars are led out from the three-phase integrated busbars in two directions, the size of the cross-section of the busbar enclosure is limited

Method used

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Examples

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Embodiment Construction

[0019] An embodiment of the invention is described below with reference to the following drawings, in which:

[0020] figure 1 It is a top view with a partial cross-sectional view of the three-phase integrated gas-insulated busbar of the present invention. figure 2 is along figure 1 The view from the direction of arrow A in the middle. image 3 is along figure 1 The view from the direction of the arrow B in the middle. Figure 4 is a perspective view of the connection between the main and branch buses.

[0021] exist Figures 1 to 4 Among them, the cylindrical busbar casing 1 is made of metal such as stainless steel, and a bolt mounting flange 2 is used on one side of the busbar casing to make it closed. The bus bar housing 1 is filled with insulating gas. Three vertical outlets 3R, 3S and 3T are formed on the top surface of the busbar housing 1 in the longitudinal direction (axial direction). The three vertical outlets 3R, 3S and 3T are formed on a straight line coax...

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Abstract

In a three-phase integrated gas insulated bus, three vertical outlets 3 are formed in the longitudinal direction of a cylindrical bus enclosure 1 and three horizontal outlets are formed in almost the same axial position as these vertical outlets 3 in the circumferential direction. The three-phase main bus conductors 7 are laid out to ensure that one side of a triangle having the apexes where three-phase main bus conductors 7 are located is approximately parallel to these horizontal outlets 4. The main bus conductors 7 are extended to the three vertical outlets 3 sequentially starting from the main bus of the phase closest to the vertical outlets 3, and branch buses 8 and 9 are led from the tip positions thereof to the vertical outlets 5 and horizontal outlets 6.

Description

technical field [0001] The invention relates to a three-phase integrated gas-insulated bus used in gas-insulated switchgear. Background technique [0002] It is well known that gas insulated switchgear is often used for switching purposes in power systems. The main busbar in the gas insulated switchgear is a double busbar structure to ensure a stable power supply. Moreover, the main busbar is a split-phase closed arrangement or an integrated three-phase arrangement. [0003] The integrated three-phase arrangement of the main busbars is such that the three-phase main busbar conductors are supported by insulating partitions to be positioned at the vertices of a triangle in a cylindrical busbar enclosure filled with insulating gas. This triangle is usually an isosceles triangle. [0004] In gas insulated switchgear, a branch bus is drawn from the three-phase integrated bus. A method of drawing branch buses from a three phase integrated bus is known, for example, see Japanes...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02B13/02H01H33/00H02B13/035H02G5/06
CPCH02B13/0352H01H33/00
Inventor 冈部守山田均宫本稔久小泽勇
Owner HITACHI LTD
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