Performance degradation comparisons and failure mechanism of silver metal oxide contact materials in relays application by simulation

Abstract

To evaluate the electrical contact behaviors of silver metal oxide contact materials in relays application more accurately, and to guide the selection of contact materials, the test device and testing method for simulating electrical contact performance in relays application were analyzed in this paper. The electrical contact simulation test system was designed and developed, which can easily simulate contact materials. The contact resistance, static force and rebound energy degradation parameters of AgSnO 2 , AgCdO and AgNi contact materials under the same load conditions were obtained through experimental research, the contact resistance and arcing energy degradation parameters of AgSnO 2 under different opening distances were acquired at the same time. The result indicated that accurate data are received by the electrical contact simulation testing method. Finally, based on the test data, the degradation performance of three selected test materials was tested, and the failure mechanism of AgSnO 2 materials was analyzed.

Storage reliability prediction of electromechanical components based on virtual manufacturing and testing

“…A test system was developed in Ref. [ 8 ] to monitor the electrical contact behavior of EMCs, and the performance degradation laws and failure mechanisms of three widely used contact materials were effectively analyzed based on the system. Based on the accelerated degradation tests, the storage failure mechanism, storage life prediction and storage reliability evaluation of typical EMC (electromagnetic relay) were studied in Refs.…”