Unlock instant, AI-driven research and patent intelligence for your innovation.

Contact arrangement and electrical switching device with such contact arrangement

An electrical switch and contact technology, applied in the field of electrical switchgear and load break switch, can solve the problem of not being covered by cover elements

Inactive Publication Date: 2015-10-07
ABB TECH AG
View PDF4 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The implementation of the cover element brings about a certain relief with respect to said problems; however, it is observed that metal erosion on the arcing contacts still exists in the region of their contact ends, which by definition cannot be covered by the cover element, and reduces the number of Particles still accumulate near the guide element because some particles are still transported by the fluid into the gap between the cover element and the arcing contacts

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Contact arrangement and electrical switching device with such contact arrangement
  • Contact arrangement and electrical switching device with such contact arrangement
  • Contact arrangement and electrical switching device with such contact arrangement

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0084] The invention is described for the example of a high voltage circuit breaker, but the principles described hereinafter are also applicable for using the invention in other switching devices, eg of the type mentioned at the outset.

[0085] Hereinafter, the same reference numerals denote structurally or functionally identical or similar elements of various embodiments of the present invention.

[0086] For reasons of simplicity, a partial cross-sectional view refers to the illustration of only a section of an element of the drawing. A rotational symmetry of the element is assumed with respect to the longitudinal axis z of the contact arrangement.

[0087] In the context of the present disclosure, the terms "cross-section" and "width" relate to an area lying in a plane perpendicular to the longitudinal axis z. Thus, the terms "elongated" or "elongated" relate to elongation in the direction of the longitudinal axis z.

[0088] figure 1 A cross-sectional side view of an ...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

A contact arrangement has a longitudinal axis (z) and comprises at least a first contact (4a) and at least a second contact (4b) interacting electrically and mechanically with each other for closing and opening the contact arrangement. The first contact (4a) is surrounded by a protecting cover element (2) in such a way that a contacting extremity of the first contact (4a) protrudes beyond the cover element (2). The first contact (4a) and the cover element (2) are arranged with respect to one another in such a way that a gap (7) is provided between them along at least a portion of their elongation, wherein the gap (7) has a first opening (10) towards a first volume (15) surrounding the first contact (4a). The cover element (2) comprises at least one chamber (9) connected at least to the gap (2).

Description

technical field [0001] The invention relates to the field of medium and high voltage switch technology and to a contact arrangement according to the independent claims and to an electrical switching device with such a contact arrangement, in particular for use as an earthing device, a quick-acting earthing device, a circuit breaker, Generator circuit breakers, switch disconnectors, combined disconnectors and earthing switches, or load break switches in power transmission and distribution systems. Background technique [0002] Electrical switchgear is well known in medium and high voltage switching applications. For example, they are used to interrupt the flow of electricity in the event of an electrical fault. As an example for electrical switching devices, circuit breakers have the task of breaking contacts and keeping them away from each other so that current does not flow, even at high potentials originating from the electrical fault itself. For the purposes of this dis...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
IPC IPC(8): H01H33/90H01H33/70H01H9/30H01H33/02H01H33/88
CPCH01H33/90H01H33/7023H01H2009/305H01H2033/028H01H2033/888
Inventor 叶向阳J.努弗M.德霍特雷N.加里博迪O.亨格
Owner ABB TECH AG