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Fixed contact structure of disc high-current off-circuit tap-changer

A technology of tap changer and static contact, which is applied in the field of static contact structure, can solve the problems of affecting strength and rigidity, damaging the switch body, and low reliability, and achieves the effects of improving the electric field, reducing the height of the switch, and reducing the tip discharge

Active Publication Date: 2016-08-24
WUHAN TAIPU TRANSFORMER CHANGER
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, for switches with large currents, it is inconvenient to use cold pressing, and the reliability is not high, and maintenance is also inconvenient, and the switch body may be damaged when the crimping operation is improper, affecting its strength and rigidity

Method used

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  • Fixed contact structure of disc high-current off-circuit tap-changer
  • Fixed contact structure of disc high-current off-circuit tap-changer
  • Fixed contact structure of disc high-current off-circuit tap-changer

Examples

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Embodiment Construction

[0015] The present invention will be further described below in conjunction with accompanying drawing.

[0016] Such as Figure 1-2 As shown, this embodiment provides a static contact structure of a disc-shaped high-current non-excitation tap changer, including a switch base 2 and a rotating shaft 4 mounted on the switch base. The upper end of the rotating shaft 4 is connected to the operating positioning device 1, and the rotating shaft The lower end of 4 is equipped with a radial elastic rolling contact 3, and four sets of static contacts 5 are arranged at intervals of each phase in the circumferential direction corresponding to the radial elastic rolling contact 3 on the switch base. There are three phases in total. The static contacts 5 It includes a columnar static contact body 8 and a flat terminal 10. The static contact body 8 is configured with the radially elastic rolling contact 3. The upper end of the static contact body 8 is bent back downwards to form a wiring ter...

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Abstract

The invention discloses a fixed contact structure of a disc high-current off-circuit tap-changer. The fixed contact structure comprises a switch base and a rotating shaft, wherein the rotating shaft is arranged on the switch base in a penetrating manner; the upper end of the rotating shaft is connected with an operation positioning device; radial elastic rolling moving contacts are arranged at the lower end of the rotating shaft; fixed contacts are arranged on the switch base corresponding to the radial elastic rolling moving contacts at intervals in a circumferential manner; the fixed contact structure is characterized in that each fixed contact comprises a columnar fixed contact body; each columnar fixed contact body and the corresponding radial elastic rolling moving contact are arranged in a matched manner; the upper end of each fixed contact body is folded back downwards to form a connection terminal; and each connection terminal extends out of the switch base and is a flat form. Each flat connection terminal disclosed by the invention is connected with a transformer lead terminal through a bolt, so that the structure is simple; the connection is reliable; the switch diameter dimension is small; the manufacturing cost is low; the ground electric field is uniform; and the flat connection terminals are suitable for the fixed contact structure of a high-current disc or bar off-circuit tap-changer.

Description

technical field [0001] The invention relates to a static contact structure of a disc-shaped high-current non-excitation tap changer. Background technique [0002] The connection between the static contact of the existing non-excitation tap changer and the tap lead wire is generally to insert the tap wire end into the hole of the static contact for a switch with a small current, and then through cold crimping. However, for switches with large currents, it is inconvenient to use cold pressing, and the reliability is not high, and maintenance is also inconvenient, and the switch body may be damaged when the crimping operation is improper, affecting its strength and rigidity. Contents of the invention [0003] The technical problem to be solved by the present invention is to provide a static contact structure of a disk-shaped high-current non-excitation tap changer with simple structure, reliable connection and effective improvement of electric field for the above-mentioned sh...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01H1/56
CPCH01H1/56
Inventor 丁志彪刘刚
Owner WUHAN TAIPU TRANSFORMER CHANGER
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