Arc Voltage as a Source of Information About Arc Burning on AMF Contacts

The aim of the work is analysis of current-voltage characteristics (CVCs) of vacuum arc for the high-current pulse. The arc was ignited by the opening of the electrodes and was fed with half-sine current pulse of 10-ms duration. CuCr axial magnetic field (AMF) contacts were used. Investigations for each contact system were performed in the range of arc currents up to the levels of guaranteed failu...