An experimental study of the influence of a uniform external magnetic field on electric arcs in low voltage DC switching
An experimental study of the influence of a uniform external magnetic field on electric arcs in low voltage DC switching
The effect of magnetic field on low voltage electric arcs is investigated experimentally in a dc switch apparatus with a controlled contact opening velocity (10–500 mm/sec). The switch comprises AgSnO2 contacts and parallel copper runners. The applied voltage is up to 55 V, and the applied current up to 45 A. A uniform magnetic field (0 mT-40 mT) is applied. In addition, an oscilloscope was employed to measure the arc voltage and current, and a high-speed camera was used to record the arcing event at a rate of 10,000 frames per second. The images were analyzed to measure the arc's length and diameter and estimate its column conductivity. The results show that arc conductance and conductivity reduce significantly when a magnetic field is applied.
Arc interruption, Magnetic field, DC switch, Low voltage, Arc conductance, Arc conductivity
Yan, Mingli
b1ec4d29-c6d2-4fe0-b881-2fb022fd7785
Sharkh, Suleiman M.
c8445516-dafe-41c2-b7e8-c21e295e56b9
McBride, John W.
d9429c29-9361-4747-9ba3-376297cb8770
3 December 2024
Yan, Mingli
b1ec4d29-c6d2-4fe0-b881-2fb022fd7785
Sharkh, Suleiman M.
c8445516-dafe-41c2-b7e8-c21e295e56b9
McBride, John W.
d9429c29-9361-4747-9ba3-376297cb8770
Yan, Mingli, Sharkh, Suleiman M. and McBride, John W.
(2024)
An experimental study of the influence of a uniform external magnetic field on electric arcs in low voltage DC switching.
In 2024 IEEE 69th Holm Conference on Electrical Contacts (HOLM).
IEEE.
8 pp
.
(doi:10.1109/HOLM56222.2024.10768600).
Record type:
Conference or Workshop Item
(Paper)
Abstract
The effect of magnetic field on low voltage electric arcs is investigated experimentally in a dc switch apparatus with a controlled contact opening velocity (10–500 mm/sec). The switch comprises AgSnO2 contacts and parallel copper runners. The applied voltage is up to 55 V, and the applied current up to 45 A. A uniform magnetic field (0 mT-40 mT) is applied. In addition, an oscilloscope was employed to measure the arc voltage and current, and a high-speed camera was used to record the arcing event at a rate of 10,000 frames per second. The images were analyzed to measure the arc's length and diameter and estimate its column conductivity. The results show that arc conductance and conductivity reduce significantly when a magnetic field is applied.
Text
44-R2-An Experimental Study of the Influence of a Uniform External Magnetic Field on Electric Arcs in Low Voltage dc Switching-
- Accepted Manuscript
Restricted to Repository staff only
Request a copy
Text
An_Experimental_Study_of_the_Influence_of_a_Uniform_External_Magnetic_Field_on_Electric_Arcs_in_Low_Voltage_DC_Switching
- Version of Record
Restricted to Repository staff only
Request a copy
More information
Published date: 3 December 2024
Keywords:
Arc interruption, Magnetic field, DC switch, Low voltage, Arc conductance, Arc conductivity
Identifiers
Local EPrints ID: 497324
URI: http://eprints.soton.ac.uk/id/eprint/497324
PURE UUID: fb2cfa37-b388-481f-a652-2ba38d23bec2
Catalogue record
Date deposited: 20 Jan 2025 17:33
Last modified: 22 Aug 2025 01:39
Export record
Altmetrics
Contributors
Author:
Mingli Yan
Download statistics
Downloads from ePrints over the past year. Other digital versions may also be available to download e.g. from the publisher's website.
View more statistics
