Improvement reliability of electrical contact connections as important part of energetic security

Abstract

Reliability of electrical contact connections considerably determines working capacity and fire-safety of electrical installations. The mathematical model of the degradation process in electrical contact is used for the analytic description of the time dependences of electrical contact resistance. The procedure of the life forecasting for separable and nonseparable electrical contacts has been developed on the base of the above dependences. Basing on consideration of physico-mechanical properties and microgeometry of contact-details surfaces main trends of contact connections improvement, first and foremost, aluminum conductors, are specified: application of electroconductive lubricant. Full text download