Observation of Break Arc Rotated by Radial Magnetic Field in a 48VDC Resistive Circuit Using Two High-Speed Cameras

Jun MATSUOKA; Junya SEKIKAWA

doi:10.1587/transele.E99.C.1027

Observation of Break Arc Rotated by Radial Magnetic Field in a 48VDC Resistive Circuit Using Two High-Speed Cameras

Jun MATSUOKA, Junya SEKIKAWA

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Break arcs are rotated with the radial magnetic field formed by a magnet embedded in a fixed cathode contact. The break arcs are generated in a 48VDC resistive circuit. The circuit current when the contacts are closed is 10A. The depth of the magnet varies from 1mm to 4mm to change the strength of the radial magnetic field for rotating break arcs. Images of break arcs are taken by two high-speed cameras from two directions and the rotational motion of the break arcs is observed. The rotational period of rotational motion of the break arcs is investigated. The following results are obtained. The break arcs rotate clockwise on the cathode surface seen from anode side. This rotation direction conforms to the direction of the Lorentz force that affects to the break arcs with the radial magnetic field. The rotational period gradually decreases during break operation. When the depth of magnet is larger, the rotational period becomes longer.

Publication: IEICE TRANSACTIONS on Electronics Vol.E99-C No.9 pp.1027-1030

Publication Date: 2016/09/01

Publicized

Online ISSN: 1745-1353

DOI: 10.1587/transele.E99.C.1027

Type of Manuscript: BRIEF PAPER

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Authors

Jun MATSUOKA
Shizuoka University
Junya SEKIKAWA
Shizuoka University

Keyword

arc discharge, contact erosion, high-speed camera

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Jun MATSUOKA, Junya SEKIKAWA, "Observation of Break Arc Rotated by Radial Magnetic Field in a 48VDC Resistive Circuit Using Two High-Speed Cameras" in IEICE TRANSACTIONS on Electronics, vol. E99-C, no. 9, pp. 1027-1030, September 2016, doi: 10.1587/transele.E99.C.1027.
Abstract: Break arcs are rotated with the radial magnetic field formed by a magnet embedded in a fixed cathode contact. The break arcs are generated in a 48VDC resistive circuit. The circuit current when the contacts are closed is 10A. The depth of the magnet varies from 1mm to 4mm to change the strength of the radial magnetic field for rotating break arcs. Images of break arcs are taken by two high-speed cameras from two directions and the rotational motion of the break arcs is observed. The rotational period of rotational motion of the break arcs is investigated. The following results are obtained. The break arcs rotate clockwise on the cathode surface seen from anode side. This rotation direction conforms to the direction of the Lorentz force that affects to the break arcs with the radial magnetic field. The rotational period gradually decreases during break operation. When the depth of magnet is larger, the rotational period becomes longer.
URL: https://globals.ieice.org/en_transactions/electronics/10.1587/transele.E99.C.1027/_p

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@ARTICLE{e99-c_9_1027,
author={Jun MATSUOKA, Junya SEKIKAWA, },
journal={IEICE TRANSACTIONS on Electronics},
title={Observation of Break Arc Rotated by Radial Magnetic Field in a 48VDC Resistive Circuit Using Two High-Speed Cameras},
year={2016},
volume={E99-C},
number={9},
pages={1027-1030},
abstract={Break arcs are rotated with the radial magnetic field formed by a magnet embedded in a fixed cathode contact. The break arcs are generated in a 48VDC resistive circuit. The circuit current when the contacts are closed is 10A. The depth of the magnet varies from 1mm to 4mm to change the strength of the radial magnetic field for rotating break arcs. Images of break arcs are taken by two high-speed cameras from two directions and the rotational motion of the break arcs is observed. The rotational period of rotational motion of the break arcs is investigated. The following results are obtained. The break arcs rotate clockwise on the cathode surface seen from anode side. This rotation direction conforms to the direction of the Lorentz force that affects to the break arcs with the radial magnetic field. The rotational period gradually decreases during break operation. When the depth of magnet is larger, the rotational period becomes longer.},
keywords={},
doi={10.1587/transele.E99.C.1027},
ISSN={1745-1353},
month={September},}

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TY - JOUR
TI - Observation of Break Arc Rotated by Radial Magnetic Field in a 48VDC Resistive Circuit Using Two High-Speed Cameras
T2 - IEICE TRANSACTIONS on Electronics
SP - 1027
EP - 1030
AU - Jun MATSUOKA
AU - Junya SEKIKAWA
PY - 2016
DO - 10.1587/transele.E99.C.1027
JO - IEICE TRANSACTIONS on Electronics
SN - 1745-1353
VL - E99-C
IS - 9
JA - IEICE TRANSACTIONS on Electronics
Y1 - September 2016
AB - Break arcs are rotated with the radial magnetic field formed by a magnet embedded in a fixed cathode contact. The break arcs are generated in a 48VDC resistive circuit. The circuit current when the contacts are closed is 10A. The depth of the magnet varies from 1mm to 4mm to change the strength of the radial magnetic field for rotating break arcs. Images of break arcs are taken by two high-speed cameras from two directions and the rotational motion of the break arcs is observed. The rotational period of rotational motion of the break arcs is investigated. The following results are obtained. The break arcs rotate clockwise on the cathode surface seen from anode side. This rotation direction conforms to the direction of the Lorentz force that affects to the break arcs with the radial magnetic field. The rotational period gradually decreases during break operation. When the depth of magnet is larger, the rotational period becomes longer.
ER -