收缩电阻

研究发现，忽略粗糙表面和尺度效应的影响将会严重低估收缩电阻。

It is found that the constriction resistance will be significantly underestimated if the rough surface and the scale effect are neglected . 3 .

低压电器触点间收缩电阻检测技术的研究

Study on Measuring Technology of Contraction Resistance Between Contacts

电器触点间的接触电阻包括收缩电阻和薄膜电阻。

The contact resistance between contacts is composed of contraction resistance and velamen resistance .

双电桥测收缩电阻

Measuring contract resistance with double electric bridge method

传统的检测方法是让触点接通一个较大的电流，以消除薄膜电阻，此时触点的接触电阻即为收缩电阻。

The traditional measuring method is that passing a large current through contacts so that velamen resistance is eliminated , then contact resistance is nothing but contraction resistance .

随着电流密度增加，发热量增大，粘着磨损加剧，接触表面的接触方式发生改变，导致收缩电阻和过渡电阻减小，接触电压降略有上升；

With the increase of the electrical current , the temperature of interface rose and the probability of adhesion wear increased . Due to the altering of contact manner , the contact resistance decreased and contact voltage drop increased little .

在此基础上提出收缩电阻概念，从理论上推导出收缩电阻的测量方法，从而探讨采用测量收缩电阻值来确定电寿命性能指标的方法。

On the basis , the concept of contracting resistance is put forward , and the method to measure the resistance is raised , therefore the method to determine the electrical durability index by measuring the contracting resistance is discussed .

固化时体积收缩固然对电阻降低有一定贡献，但是和导电团簇形成相比它的重要性是第二位的。

Shrinkage of resin curing does make a primary contribution to the reduction of resistance ; however , this contribution is of secondary importance in comparing with that of the cluster formation .