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Failure-to-open type disconnecting switch static contact

A technology of isolating switch and static contact, which is used in electrical switches, air switch parts, high-voltage air circuit breakers, etc.

Pending Publication Date: 2021-07-06
SHANGHAI MUNICIPAL ELECTRIC POWER CO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this kind of horizontal telescopic isolating switch often has serious faults of jamming and refusal.
At the same time, due to the tight size of the dynamic and static contacts, and the poor hardness and wear resistance of the silver plating layer of the original contacts, the silver plating layer of most disconnector contacts falls off and exposes copper, which aggravates the heating defect of the disconnector switch contacts, and even causes melting. Welding further aggravates the jamming of the isolating switch, forming a vicious circle
However, due to the special structure of the horizontal telescopic isolating switch, once it is jammed and rejected, it will cause a power failure of one line and two circuit breakers to carry out the work of eliminating defects.
Wide range of power outages and long power outages have seriously affected the safe and reliable operation of the power grid

Method used

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  • Failure-to-open type disconnecting switch static contact
  • Failure-to-open type disconnecting switch static contact
  • Failure-to-open type disconnecting switch static contact

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Embodiment Construction

[0031] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present invention.

[0032] A static contact of an anti-rejection type isolating switch, the static contact is adapted to the existing fixed base of the static contact, and the existing such as Figure 8 The horizontal telescopic static contact base shown in the figure can effectively reduce the centering debugging requirements of the original horizontal telescopic isolating switch, and at the same time ensure the electrical performance of the isolating switch while reducing th...

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PUM

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Abstract

The invention relates to a failure-to-open type disconnecting switch static contact, which is matched with an existing static contact fixed base and comprises a contact finger fixed base and a contact finger, wherein the contact finger is an annular arc self-operated contact finger and comprises a contact finger fixed end and a contact finger movable end, the contact finger fixed base is provided with a clamping groove for accommodating the contact finger movable end, the contact finger fixed end of the contact finger is fixed on the contact finger fixed base, and the contact finger movable end is arranged in the clamping groove. Compared with the prior art, the failure-to-open type disconnecting switch static contact has the advantages of failure-to-open prevention, stable performance, convenience in operation and maintenance, low cost and the like.

Description

technical field [0001] The invention relates to the technical field of isolating switches, in particular to a static contact of an anti-rejection type isolating switch. Background technique [0002] As one of the main equipment of the power system, the isolation switch is directly related to the safe and stable operation of the power grid. With the rapid development of power grid in recent years, GIS equipment has become the mainstream of power grid equipment. However, the existing open isolating switches generally have a long service life, showing an obvious aging trend, and various defects and failures occur frequently. [0003] Common isolating switch faults include contact heating, insufficient closing, jamming of opening, failure of secondary components of mechanism box, etc. The opening rejection fault caused by the jamming of the opening gate is a more serious type of isolating switch fault. If it is mild, it will cause the motor of the mechanism to burn out and the...

Claims

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Application Information

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IPC IPC(8): H01H31/02
CPCH01H31/023
Inventor 周录波王大方王栋周济平蔡成栋徐念云陆峣王超群杜颖祯
Owner SHANGHAI MUNICIPAL ELECTRIC POWER CO
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