Environmentally-Friendly Switches: Arcing Phenomena in Vacuum and SF6 Substitutes

Shenli JIA  Xingwen LI  Zongqian SHI  Lijun WANG  

IEICE TRANSACTIONS on Electronics   Vol.E95-C   No.9   pp.1452-1458
Publication Date: 2012/09/01
Online ISSN: 1745-1353
DOI: 10.1587/transele.E95.C.1452
Print ISSN: 0916-8516
Type of Manuscript: Special Section PAPER (Special Section on Recent Development of Electro-Mechanical Devices - Papers selected from International Session on Electro-Mechanical Devices 2011 (IS-EMD2011) and other recent research results -)
vacuum arc,  axial magnetic field,  cathode spots,  anode acticity,  SF6 substitutes,  

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This paper focuses on the latest research of switching arc both in vacuum and SF6 substitutes in our group. The crucial characteristics of vacuum arc are illustrated, including the motion and distribution of single cathode spot and multiple cathode spots, the influence of axial magnetic field on arc plasma characteristics, the influence of composite magnetic field on cathode jets, and the study of anode activities. Meanwhile, the arc characteristics in SF6 and its substitutes (Ar, CO2 and N2) at different pressures and gap distances are investigated by experiments and simulation.