Volumetric erosion measurements of contacts tested in DC automotive relays

Proceedings of the Forth-Seventh IEEE Holm Conference on Electrical Contacts (IEEE Cat. No.01CH37192) Pub Date : 2001-09-10 DOI:10.1109/HOLM.2001.953191

J. McBride, G. Witter, Z. Chen

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引用次数: 8

Abstract

A new tool for measurement of contact arc erosion offers better means for improvement in relay and switch design. This paper presents an experimental study on the erosion of relay contacts tested in commercial devices under representative load conditions. The erosion measurement of relay contacts has been shown to be difficult since the standard method based on a mass change cannot be easily used in this type of device. The reason for this is that the contacts cannot be separated from the contact support. In the past, SEM studies have been used for rough estimates of erosion. More recently, noncontact laser measurement systems have been developed and used in this application for measurement of the volumetric erosion. In this study, using the method of "design of experiments," a number of variables have been investigated, which include electrical current levels, material composition, and contact switching life. The objective of the study is to determine the volumetric erosion of contacts in actual automotive relays tested under a range of conditions. The study shows this technique offers a useful method for studying and improving both material and device design.

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直流汽车继电器中测试触点的体积腐蚀测量

一种新的触点弧蚀测量工具为继电器和开关的设计改进提供了更好的手段。本文介绍了在具有代表性的负载条件下，在商用设备上测试的继电器触点腐蚀的实验研究。继电器触点的腐蚀测量已被证明是困难的，因为基于质量变化的标准方法不容易用于这种类型的设备。这样做的原因是无法将联系人与联系人支持分开。在过去，扫描电镜研究已被用于粗略估计侵蚀。近年来，非接触式激光测量系统已被开发并用于体积侵蚀的测量。在这项研究中，使用“实验设计”的方法，研究了许多变量，包括电流水平，材料成分和触点开关寿命。本研究的目的是确定在一系列条件下测试的实际汽车继电器触点的体积侵蚀。研究表明，该技术为研究和改进材料和器件设计提供了有用的方法。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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Proceedings of the Forth-Seventh IEEE Holm Conference on Electrical Contacts (IEEE Cat. No.01CH37192)

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