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IEICE TRANSACTIONS on Electronics

Analysis of Rotational Motion of Break Arcs Rotated by Radial Magnetic Field in a 48VDC Resistive Circuit

Jun MATSUOKA, Junya SEKIKAWA

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Summary :

Break arcs are rotated with a radial magnetic field formed by a permanent magnet embedded in a fixed contact. The break arcs are generated in a 48VDC resistive circuit. The circuit current is 10A when the contacts are closed. The polarity of the fixed contact in which the magnet is embedded is changed. The rotational radius and the difference of position between the cathode and anode spots are investigated. The following results are obtained. The cathode spot is moved more easily than the anode spot by the radial magnetic field. The rotational radius of the break arcs is affected by the Lorentz force that is caused by the circumferential component of the arc current and the axial component of the magnetic field. The circumferential component of the arc current is caused by the difference of the positions of the rotating cathode and anode spots.

Publication
IEICE TRANSACTIONS on Electronics Vol.E100-C No.9 pp.732-735
Publication Date
2017/09/01
Publicized
Online ISSN
1745-1353
DOI
10.1587/transele.E100.C.732
Type of Manuscript
BRIEF PAPER
Category

Authors

Jun MATSUOKA
  Shizuoka University
Junya SEKIKAWA
  Shizuoka University

Keyword