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Three-position disconnector switch

An isolating switch, three-position technology, applied in the direction of electric switch, grounding switch, air switch components, etc., can solve the problem of large temperature rise

Pending Publication Date: 2022-01-21
ABB (SCHWEIZ) AG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] In prior art switchgear and controlgear (also known as controlgear) designs, linear three-position disconnectors are utilized, but they may suffer from too much temperature rise

Method used

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  • Three-position disconnector switch
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  • Three-position disconnector switch

Examples

Experimental program
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Effect test

Embodiment Construction

[0034] figure 1 An example of a conventional three position disconnect switch design with linear component movement is shown, used in a medium voltage application.

[0035] exist figure 1 , the following components are shown:

[0036] 1: Earth contact housing,

[0037] 2: Power output contact housing,

[0038] 3: Power input contact housing,

[0039] 4: the tube / piston housing, arranged for the conductive connection of the required contacts, and

[0040] 5: Motor operated threaded rod which is used to move and hold the piston in the desired position.

[0041] However, the design is bulky and does not dissipate heat easily during operation and temperature rise tests, and heat transfer is mainly through radiation to the surrounding environment.

[0042] The new three-position disconnect switch design solves these problems. It is smaller and air flow is enabled inside components carrying high currents to provide cooling.

[0043] Figure 2 to Figure 5 Involves the design...

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PUM

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Abstract

The present invention relates to a three-position disconnector switch, comprising: an earthing contact (1), a power out contact (2), a power in contact (3), a piston (4), and a threaded rod (5). A length of the piston is such that in a first switch position an outer surface of a wall of the piston makes an electrical contact between the power out contact and the power in contact. The length of the piston is such that in a second switch position the outer surface of the wall of the piston does not make an electrical contact with either the earthing contact or the power in contact. The length of the piston is such that in a third switch position the outer surface of wall of the piston makes an electrical contact between the earthing contact and the power out contact. The piston comprises an inner threaded section (7) configured to engage with the threaded rod, wherein a length of the inner threaded section is less than the length of the piston. Rotation of the threaded rod is configured to engage with the inner threaded section to move the switch between the different switch positions.

Description

technical field [0001] The invention relates to a low-, medium- or high-voltage three-position disconnector and switchgear or controlgear for substations. Background technique [0002] In prior art switchgear and controlgear (also known as control gear) designs, linear three-position disconnectors are utilized, but they may suffer from too high a temperature rise. [0003] This issue needs to be addressed. Contents of the invention [0004] It would therefore be advantageous to have a means of reducing overheating of three position switches for switchgear or control devices. [0005] The objects of the invention are solved with the subject-matter of the independent claims, wherein further embodiments are incorporated in the dependent claims. [0006] In a first aspect, there is provided a three-position disconnect switch comprising: [0007] - ground contact; [0008] - power output contacts; [0009] - power input contacts; [0010] - piston; and [0011] - threade...

Claims

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Application Information

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IPC IPC(8): H01H31/02H01H3/32
CPCH01H31/02H01H3/32H01H31/003H01H3/264H01H1/365H01H1/38H01H1/62H01H31/26
Inventor 雷德克·贾沃拉迪特马尔·金特施约瑟夫·塞尔诺豪斯迈克尔·斯库奇托马斯·科策尔凯·戈尔特
Owner ABB (SCHWEIZ) AG
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