Mounting plate for fixed contact of tapping selector of combined on-loading tapping switch

An on-load tap and static contact technology, applied in transformers, inductors, variable inductors, etc., can solve the problems of poor rigidity, many processing procedures of insulating cylinders, and inconvenient assembly of static contact and moving contact system.

Inactive Publication Date: 2006-12-27
SHANGHAI HUAMING POWER EQUIP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] 1) In order to ensure the reliable opening and closing of the dynamic and static contacts of the on-load tap-changer tap selector, it is required that the fastening between the flange and the insulating slats must be firm, and the connection ends of the upper and lower flanges of the existing tap selector are A ring, and the insulating slats are flat plates, and the fastening connection between the two is a connection between an arc surface and a plane. The fastening is difficult and easy to loosen, which will affect the reliable opening and closing of the dynamic and static contacts, causing accidents;
[0006] 2) The outer end of the static contact is tightly connected to the transformer coil tap. In order to reduce the manufacturing cost, the transformer manufacturer will make the lead wire of the coil tap as short as possible. Because the head mounting plate is relatively thin and has poor rigidity, it will be deformed, and it will also affect the reliable opening and closing of the dynamic and static contacts, resulting in potential accidents
[0008] 1) This structure replaces multiple slats with an integral insulating cylinder, which is relatively easy, reliable, and not easy to loosen. However, since it is an integral insulating cylinder, the assembly of the static contact and the moving contact inside it The assembly of the system, etc. brings inconvenience, and it also brings inconvenience to the future maintenance of the switch;
[0009] 2) The overall insulating cylinder has many processing procedures and is difficult to process. A slight mistake will cause the entire insulating cylinder to be scrapped; The breakdown phenomenon will also cause the entire insulating cylinder to be scrapped, resulting in a large loss

Method used

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  • Mounting plate for fixed contact of tapping selector of combined on-loading tapping switch
  • Mounting plate for fixed contact of tapping selector of combined on-loading tapping switch

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Embodiment Construction

[0015] figure 1 Among them, the arc-shaped static contact mounting plate 3 is composed of five identical arc-shaped static contact mounting plates combined into a cylindrical shape when in use, and each mounting plate has multiple static contact mounting holes 31 and Connect the mounting holes 32 for connecting the upper and lower flanges of the selector, and along the axial direction, an opening 33 is added between each static contact mounting hole 31. figure 2 In the arc-shaped static contact mounting plate 3.

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Abstract

The disclosed fixed contact mounting plate for a selector of composite on-load tap changer comprises: the arc-shape plate to be used with five together, a mounting hole for the contact, and a mounting hole for flanges, wherein arranging openings between every two contact-mounting holes, and using high-strength composite material to die stamp integrated and form for the contact plate. This invention is smart to reduce work and cost for spread.

Description

Technical field: [0001] The invention relates to a component in a power transmission and transformation system, in particular to a static contact mounting plate of a combined on-load tap switch tap selector. Background technique: [0002] The on-load tap changer is used in power transformers or industrial transformers. The tap change is performed under the condition that the transformer does not interrupt the load current (that is, under load), and the turns ratio of the transformer is changed to adjust the output voltage of the transformer. [0003] The static contact mounting plate of the existing combined on-load tap changer tap selector has two forms: a cage structure composed of multiple slats and an integral insulating cylinder structure, although both can be used to install static contacts , The role of connecting the upper and lower flanges of the tap selector and supporting the switch is widely used, but due to structural reasons, there are the following shortcomings: ...

Claims

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Application Information

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Patent Type & AuthorityApplications(China)
IPC IPC(8): H01F29/04
Inventor肖日明
OwnerSHANGHAI HUAMING POWER EQUIP CO LTD