固定式开关插座螺纹型接线端子的失效分析

接线端子是固定式开关插座中最重要的部件之一,直接影响产品接线的方便性和使用的可靠性,因此是客户尤其是电工选购的重点。本文从产品失效现象着手,对市场上常用的几种螺纹型接线端子进行了分析比较和理论计算,简要阐述了压板式接线端子连接导线时的不稳定性,从而导致温升和银点粘连的机理,为行业内接线端子的设计选型提供参考意见。

Fail Analysis of Screw Terminal of Fixed Switch and Socket

Terminal is an important part in the fixed switch and socket, and it is closely related to the convenience to connect cable and the reliability to apply, so it is the key point that the customer, especially the electrician, to choose the product. According to failure phenomenon, this paper analyzes and calculates a few universal screw terminal in the market, and simply states that the reason of temperature rising and contact point melting is related to connecting instability of panel terminal. It can be a reference to choose the terminal in the design of the industry.