Fixed contact of tapping selector of combined on-loading tapping switch

An on-load tap, static contact technology, applied in transformers, inductors, variable inductors, etc., can solve the problems of tripping, easy torsion or even loose static contacts, poor contact, etc.

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

[0004] 1. Since the cylindrical surface where the static contact and the moving contact are clamped and connected is perpendicular to the running track of the moving contact, the moving contact must stop at a certain point during the operation to make reliable contact with the static contact. Therefore, the precision requirements of the entire transmission system are very high. If the position of the static contact is skewed or the moving co

Method used

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  • Fixed contact of tapping selector of combined on-loading tapping switch

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Embodiment Construction

[0010] figure 1 Among them, the terminal 121 is a rectangular parallelepiped plate, which is inserted into the mounting hole on the mounting plate of the static contact. The terminal has a mounting hole 1211, which is used to fasten the tap of the transformer. Close to the inner wall of the mounting plate, the cylindrical arc-shaped contact end 124 is located on the same central plane as the arc-shaped pressure equalizing end 122 and the plate transition connection end 123 .

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Abstract

The disclosed composite-type fixed contact for a tap selector of on-load tap changer comprises: a terminal, a voltage equalizing end, a transitional coupling end, and a contact end with some part inserted in the mounting hole of mounting plate as cuboid and the part contacted with movable contact as column arc shape. This invention is simple and smart to improve action reliability greatly 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 of a tap selector of a combined on-load tap changer. Background technique: [0002] The on-load tap changer is used in power transformers or industrial transformers. It performs tap change when the transformer does not interrupt the load current (that is, on-load condition), changes the turns ratio of the transformer, and adjusts the output voltage of the transformer. [0003] Although the static contact of the existing combined on-load tap-changer tap selector can play the role of connecting the tap of the transformer and being selected by the passive contact, and is widely used, due to structural reasons, There are following disadvantages: [0004] 1. Since the cylindrical surface where the static contact and the moving contact are clamped and connected is perpendicular to the running track of the moving contact, the moving cont...

Claims

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Application Information

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IPC IPC(8): H01F29/04H01H1/56
Inventor 肖日明
Owner SHANGHAI HUAMING POWER EQUIP CO LTD
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