Effect of lubricant oil on Electrical Sliding Contact with Au Brush-Slip ring System

摘要

The slip ring and Au brush is widely used in measurement equipment and power supplies for static object to moving objects. Previous study have been tested the silver and gold materials as the brush and slip-ring. Then, we used various lubricants on the slip ring surface. In this paper, two types of lubricant are used for electrical sliding contact. As the result, depending on the type of lubricant, it has found that the contact voltage drop is greatly changed. In particular, the contact voltage drop is changed by the viscosity and conductivity of the lubricant. In this study, the slip rings and brushes are sliding at all times, it seems to be the lubricant coming gradually decreases. Lubricants are essential in order to reduce the frictional coefficient of an contact materials. However, the electrical characteristics tend to worse. In this paper, the contact voltage drop characteristics are reported in detail because Experiments were performed in the case of using an electrically conductive lubricant.