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Switching device

A technology of switch devices and contacts, which is applied in electric switches, high-voltage/high-current switches, high-voltage air circuit breakers, etc., can solve problems such as reducing the switching capacity of switch devices, and achieve the effect of improving stability

Inactive Publication Date: 2009-01-07
SIEMENS AG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

This reduces the switching capacity of the switching device

Method used

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Embodiment Construction

[0025] The switching device shown in FIG. 1 is a high-voltage circuit breaker 1 . The high-voltage circuit breaker 1 is used to connect rated current and short-circuit current. The high-voltage circuit breaker 1 has a first arcing contact 2 and a second arcing contact 3 . The first arcing contact 2 is substantially cylindrical and has a coating of an arc-resistant material on its end facing the contact gap of the high-voltage circuit breaker 1 . The second arcing contact 3 is designed in the form of a tulip contact, into which the first arcing contact 2 can be inserted. At its end facing the contact gap, the second arcing contact 3 likewise has a coating of an arc-resistant material. The two arcing contacts 2 , 3 are arranged axially opposite each other on a main axis 4 . A first rated arcing contact 5 is arranged concentrically to the first arcing contact 2 . A second rated arcing contact 6 is arranged concentrically to the second arcing contact 3 . The first rated arcin...

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Abstract

The invention relates to an electrical switching device (1), in particular a high-voltage circuit breaker, comprising arcing contacts (2, 3) and rated current contacts (5, 6). At least one of the rated current contacts (5, 6) has a layer of arc-resistant material. The arc-resistant material is provided with an electroplating layer.

Description

technical field [0001] The invention relates to a switchgear comprising a first and a second arcing contact axially opposite each other and a first and a second rated current contact arranged coaxially with the arcing contact, wherein at least the rated current contact One of the current contacts has a hollow cylindrical base body, which is covered at its end facing the switching device contact spacing with an arc-resistant material. Background technique [0002] Such a switching device is known, for example, from European patent application EP0982748A1. There, the arcing contacts are covered by plasma spraying with an arc-resistant material, so that an electric arc burning between the arcing contacts causes no or only small burning losses. In addition, the rated current contacts likewise partially have a burnout protection layer applied by means of plasma spraying on their sliding surfaces. The fixed-position rated current contact is covered with silver on the surface of ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01H33/00H01H11/04
CPCH01H33/00H01H11/041H01H2011/046
Inventor 乔基姆·格里克沃尔克·莱曼安德尔泽杰·诺瓦科夫斯基克劳斯·舒勒
Owner SIEMENS AG
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