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Method for producing a contact piece, and corresponding contact piece for a vacuum interrupter chamber

A vacuum switch and contact technology, applied in electric switches, high-voltage/high-current switches, contacts, etc., to achieve high switching force, high on and off speed, and improved conductivity

Inactive Publication Date: 2014-02-19
ABB TECH AG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, it is to be noted that each disc is not stronger (thicker) than the selected width of the punched slit

Method used

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  • Method for producing a contact piece, and corresponding contact piece for a vacuum interrupter chamber
  • Method for producing a contact piece, and corresponding contact piece for a vacuum interrupter chamber

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Embodiment Construction

[0026] figure 1 shows the overall display of the vacuum breaker box, and is followed by the figure 2 shown and described in detail. figure 1 A vacuum interrupter box is shown comprising a movable feeder 1 , a vacuum interrupter box cover 2 which creates a vacuum-tight connection between an insulator (ceramic) 6 and a metal bellows 3 . The dielectric screen (Mittelschirm) 4 controls the electric field inside and outside the vacuum switch box and protects the insulator 6 from metal vapors. exist figure 2 In the center, set contacts 5' and 5", which are preferably constructed according to figure 2 MLC contacts. The feeder 8 is set on the fixed contact side, and the screen 7 controls the electric field.

[0027] figure 2 A novel combination of two layers is shown, namely a first flame-resistant contact layer 5', which can be made, for example, of CuCr or the above-mentioned alternative flame-resistant raw materials or raw material alloys, and a further contact layer 5", ...

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Abstract

The disclosure relates to a method for producing a contact piece, for use in a vacuum interrupter chamber, especially in a low, medium or high voltage vacuum interrupter chamber. The aim of the disclosure is to improve multi-layer contact systems in such a manner that even larger layer thicknesses can be used to improve the electrical properties. For this purpose, the contact piece is comprised of at least two layers of powder-metallurgical pressed green compacts with a solder film inserted thereinbetween, the layers being soldered together in a soldering furnace in a desired relative position to each other at the same time the layers are sintered.

Description

technical field [0001] The invention relates to a method of manufacturing a contact particularly for use in low-, medium- and high-voltage vacuum switchgears, and to a contact per se for a vacuum switchgear. Background technique [0002] Switchgear boxes, in particular vacuum switchgear boxes used in low-voltage switchgear, medium-voltage switchgear, high-voltage switchgear and generator switchgear, are equipped with contacts in the box housing (Kammergehaeuse) which are closed at the closing of the device Electrical contact is made in the state and a plasma arc (plasma arc) (an electric arc burning in a vacuum environment) is generated thereon when breaking, especially under short-circuit conditions. In vacuum switchgears of this type, so-called radial field contact systems are often used. In this system, a radial magnetic field is generated by coil arcs, wherein the arc elements are formed by slots arranged in the contact plate. [0003] The advantage of such a radial ma...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01H33/66
CPCH01H33/664H01H1/0206H01H11/045Y10T29/49105Y10T29/49128Y10T29/49144Y10T29/49149Y10T29/49204Y10T29/49206
Inventor D·根奇冈特·皮尔辛格尔
Owner ABB TECH AG