The Relationship between Voltage and Duration of Short-Time Arc Generated by Slowly Breaking Silver Contact

Yoshiki KAYANO  Hikaru MIURA  Kazuaki MIYANAGA  Hiroshi INOUE  

IEICE TRANSACTIONS on Electronics   Vol.E91-C   No.8   pp.1230-1232
Publication Date: 2008/08/01
Online ISSN: 1745-1353
DOI: 10.1093/ietele/e91-c.8.1230
Print ISSN: 0916-8516
Type of Manuscript: Special Section LETTER (Special Section on Recent Development of Electromechanical Devices(Selected Papers from IS-EMD2007))
Category: Arc Discharge & Related Phenomena
bridge,  arc discharge,  short-time arc,  short-arc sustainable voltage (SASV),  slow break,  

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Arc discharge generated by breaking electrical contact is considered as a main source of an undesired electromagnetic (EM) noise. To clarify mechanism of generation of the EM noise, feature extraction of bridge and short-time arc waveforms generated by slowly breaking Ag contact was discussed experimentally. The short-duration time arc before the ignition of the continuous metallic arc discharge was observed. The highest probability density voltage is defined as short-arc sustainable voltage (SASV). The relationship between SASV and duration of short-time arc was quantified experimentally. It is revealed that as the arc voltage of the short-time arc is higher, its duration becomes longer.