Title :
Electrode temperature dependency on arc and erosion in electric contacts
Author :
Sone, Hideaki ; Ishida, Hiroyuki ; Takagi, Tasuku
Author_Institution :
Tohoku Univ., Sendai, Japan
Abstract :
Recent findings on the relationship between arc and erosion or transfer in a switching contact are summarized with special attention to the role of electrode temperature. In order to apply those findings to design of electric contacts, experimental comparisons of axisymmetric bar contacts and cross bar contacts are carried out for Ag, Pd, and their alloy contacts. Test results of erosion and related matters are shown for different voltages and currents. From a viewpoint of thermal flow, the cross bar type configuration is better. The purpose of the tests is to find the difference in arc erosion between the two types of contact configuration
Keywords :
circuit-breaking arcs; electrical contacts; electrodes; palladium; palladium alloys; silver; silver alloys; wear; Ag; AgPd; Pd; arc; arc erosion; axisymmetric bar contacts; cross bar contacts; electric contacts; electrode temperature dependence; erosion; switching contact; thermal flow; Bridge circuits; Cathodes; Contacts; Electrodes; Inorganic materials; Partial discharges; Switches; Temperature dependence; Testing; Voltage;
Conference_Titel :
Electrical Contacts, 1990. Proceedings of the Thirty-Sixth IEEE Holm Conference on ... and the Fifteenth International Conference on Electrical Contacts
Conference_Location :
Montreal, Que.
DOI :
10.1109/HOLM.1990.112991
