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Vacuum switching device

A technology of vacuum switch and coil device, which is used in electrical switches, high-voltage/high-current switches, high-voltage air circuit breakers, etc.

Inactive Publication Date: 2005-12-07
阿雷瓦T＆D英国有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, the known switching devices are not as easy to manufacture and effective in extinguishing the arc when the electrodes are separated as may be desired.

Method used

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Examples

Experimental program
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Embodiment Construction

[0038] Fig. 1 shows a typical configuration for a vacuum interrupter, in which an evacuated housing 11 includes an insulating cylinder 1, and metal end plates 2, 3 are joined to opposite ends of the insulating cylinder 1. Inside the cylinder 1, a fixed contact element 7 and a movable contact element 9 are provided. Each of the contact elements 7, 9 has an electrode device at the end portion, and the electrode devices each include a coil forming device 6, 8 and a contact element 13, 14.

[0039] FIG. 2 shows an electrode 16 according to the prior art, in which a coil forming device 18 is integrally formed on the conductive element 20. The coil forming device 18 includes a grooved cup shape in which the open end portion of the cup-shaped element is opposite to the conductive element 20. The groove 22 is provided inside the cup wall. The contact element 24 is arranged on the open end portion of the cup (at the end face of the electrode) and is adapted to contact the same element on a...

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PUM

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Abstract

A vacuum switching device comprising an evacuated envelope including an insulating cylinder, a stationary contact electrode and a movable contact electrode housed within the envelope which are adapted to be engaged or disengaged to close or open a circuit in which the interrupter is connected and at least one of the electrodes comprises a coil defining means which, in use, is adapted to generate magnetic fields to control the formation of arcs when the electrodes are disengaged, each electrode having an end face (54) adapted to contact the other electrode when in the engaged condition, at least one of the electrodes has a low resistance electrical path transverse (42) to the axis of the electrode in a region of the end face (54).

Description

Technical field [0001] The present invention relates to improvements in vacuum switching devices, such as vacuum interrupters, or vacuum switches. Background technique [0002] It has been known for many years that vacuum switchgear is suitable for switching on or off large currents. Various electrode designs have been recommended, which are joined or separated to turn on or off the current. Examples of various electrode designs can be seen in EP 0349303, DE 3915519 and DE3610241. [0003] However, the known switching device may not be as easy to manufacture and effective when the electrodes are separated as one might expect. Summary of the invention [0004] According to the present invention, the vacuum switchgear includes an evacuated housing, the evacuated housing includes an insulated cylinder, a fixed contact electrode and a movable contact electrode, which are all installed inside the housing, two This electrode is suitable for joining or separating to close or open the c...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01H33/66H01H1/02H01H33/18H01H33/664
CPCH01H33/6642H01H1/0203
Inventor L·T·法尔金哈姆R·S·帕拉沙
Owner 阿雷瓦T＆D英国有限公司