Copper and aluminium transition binding post

Abstract

The invention discloses a copper and aluminium transition binding post comprising an aluminium part and a copper part, wherein one end of the aluminium part is connected with a conductor at the bottom end of a cable, the other end is provided with an extension section extending outward, and the diameter size of the solid extension section is smaller than that of the aluminium part; and one end of the copper part is provided with a horizontal extension section having the same size with the extension section of the aluminium part, the other end is provided with a U-shaped bottom plate part, the extension section of the aluminium part and the horizontal extension section of the copper part form an integral neck part, and the aluminium part and the copper part are combined at the cross section part of the neck part. The properties of the copper and aluminium transition binding post meet the requirements for industrial A class connecting hardware. Due to the low grade design of the copper and aluminium binding post, the size of the bottom plate part is reduced to a full extent, and meanwhile, the cross section at the combination part of the copper part and the aluminium part is increased. The connection properties of the product are improved under the condition of ensuring current carrying capability, and the connection of a circuit breaker and a bus bar is facilitated.

Description

technical field [0001] The invention relates to a connection terminal for realizing electrical connection, more particularly, to a copper-aluminum transition connection terminal. Background technique [0002] With the development of low-voltage electrical equipment, the requirements for control are becoming more and more strict and precise, thus increasing the performance requirements for terminal blocks. At present, conventional copper-aluminum transition terminals only meet the B-class standard in IEC 61238 or the requirements of B-class connection fittings in GB / T9327-2008, and the performance cannot reach the level of industrial A-class. Please refer to the standard document GB / T9327-2008 , the standard specifically describes the definition of Class A and Class B connecting fittings, that is, Class A connecting fittings are suitable for power distribution or industrial networks that can withstand relatively long-term and relatively high-intensity short-circuit currents, ...

AI Technical Summary

Problems solved by technology

[0005] According to the requirements of GB / T9327-2008, the width of the bottom plate of the copper-aluminum transition terminal is too large, resulting in more consumables and increased costs

In addition, if figure 2 As shown, the cross-sectional area of ​​the copper-aluminum junction of the copper-aluminum transition terminal is small, which increases the current density flowing through the transition section, reduces the conduction transmission efficiency, and affects the electrical performance of the connection of the terminal.

[0006] In addition, conventional copper-aluminum transition terminals generally adopt a bare structure, which is susceptible to corrosion, which reduces the performance of the product

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