A copper-aluminum interface alloy composite bus bar used in power transmission and distribution equipment

Abstract

The invention provides a copper-aluminum interface alloy composite bus bar used in power transmission and distribution equipment and belongs to the technical field of composite bus bars. The copper-aluminum interface alloy composite bus bar comprises a copper-aluminum composite bus bar body; the outer layer of the copper-aluminum composite bus bar body is copper and the inner layer is aluminum, the copper layer covering the aluminum layer; the copper-aluminum composite bus bar body is in the shape of an oblate ellipsoid. The outer surface of the aluminum layer is provided with a plurality of protruding ribs in the length direction and the inner surface of the copper layer is provided with grooves A matching the protruding ribs; the upper surface of an end of the copper-aluminum composite bus bar body is provided with a groove B and the lower surface is provided with a protruding block matching the groove B. Two opposite sides of the end of the copper-aluminum composite bus bar body are also provided with a plurality of protrusions, and the protrusions on the two sides are arranged to be mutually staggered. The problems of low manufacture cost, relatively poor conduction performance and relatively high fault rate of conventional power transmission and distribution equipment are solved.

Description

technical field [0001] The invention relates to the technical field of composite busbars, in particular to a copper-aluminum interface alloy composite busbar used in power transmission and distribution equipment. Background technique [0002] At present, the current-carrying conductors of power transmission and distribution equipment in the known technology usually use copper busbars, and some aluminum busbars are used as current-carrying conductors. Copper has the advantages of stable electrochemical performance, high conductivity, and low resistivity. The conductivity of pure aluminum conductors Poor, low mechanical strength, poor flexibility, poor welding performance, high contact resistance, and the surface of pure aluminum is easily oxidized in the air, forming an aluminum oxide film with insulating properties, resulting in increased AC resistance and reduced current carrying capacity. The connection is prone to failure, so the amount used has been small for a long time...

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Problems solved by technology

[0003] The purpose of the present invention is to provide a copper-aluminum interface alloy composite busbar used in power transmission and distribution equipment to achieve the purpose of enhancing the conductivity of power transmission and distribution equipment, saving costs and prolonging the service life, and solving the problems of existing power transmission and distribution equipment. Problems of low manufacturing cost, poor electrical conductivity and high failure rate

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