Position and Shape of Break Arcs Driven by Transverse Magnetic Field

Tomoaki SASAKI  Junya SEKIKAWA  Takayoshi KUBONO  

Publication
IEICE TRANSACTIONS on Electronics   Vol.E95-C   No.9   pp.1527-1530
Publication Date: 2012/09/01
Online ISSN: 1745-1353
DOI: 10.1587/transele.E95.C.1527
Print ISSN: 0916-8516
Type of Manuscript: BRIEF PAPER
Category: 
Keyword: 
break arc,  magnet,  external magnetic field,  48 V,  electrical contact,  

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Summary: 
Break arcs are generated in a DC48 V and 10 A resistive circuit. The external transverse magnetic field of a permanent magnet is applied to the break arcs. The position and shape of the break arc are investigated. As a result, it is confirmed that the cathode spot region was shifted upward earlier than the anode spot region. This result shows that the cathode spot region is easily driven by the transverse magnetic field than the anode spot region.