Effects of Contact Surface Condition on Contact Resistance and Improving Methods
The electrical contact is an important part in electrical switches. The contact resistance of electrical contacts will not only affect the electrical switches properties, but also play an important role in energy saving of electrical appliance. This paper analyzes the surface foreign materials, surface roughness, surface flatness, as well as the surface film of electrical contacts and their effects on contact resistance. The main technical indicators which affect contact resistance and the improving methods are also put forward.
electrical contactcontact resistancesurface foreign materialsroughnessflatnesssurface film