2024-03-28T20:00:41Z
https://nagoya.repo.nii.ac.jp/oai
oai:nagoya.repo.nii.ac.jp:00010313
2023-01-16T03:56:19Z
320:502:503
Electrode Conditioning Mechanism Based on Pre-breakdown Current under Non-uniform Electric Field in Vacuum
Okubo, Hitoshi
Yasuoka, Takanori
Kato, Tomohiro
Kato, Katsumi
open access
Copyright © 2008 IEEE. Reprinted from 23rd International Symposium on Discharges and Electrical Insulation in Vacuum, 2008. ISDEIV 2008. v.1, p.13-16. This material is posted here with permission of the IEEE. Such permission of the IEEE does not in any way imply IEEE endorsement of any of Nagoya University’s products or services. Internal or personal use of this material is permitted. However, permission to reprint/republish this material for advertising or promotional purposes or for creating new collective works for resale or redistribution must be obtained from the IEEE by writing to pubs-permissions@ieee.org.
Electrode conditioning in vacuum is very important technique for improvement of the insulation performance of vacuum circuit breakers (VCBs). This paper discusses the spark conditioning mechanism through the measurement and analysis of the pre-breakdown current under non-uniform field. From F-N plots, we made sure that the pre-breakdown current was based on field emission mechanism. We quantitatively evaluated the variation of pre-breakdown current in the conditioning process. As a result, field enhancement factor β decreased as the conditioning proceeded and reached the final value. In addition, in case of non-uniform field, we found that βon rod electrode surface after conditioning was distributed according to the electric field distribution on the surface.
IEEE
2008-09
eng
journal article
VoR
http://hdl.handle.net/2237/12133
https://nagoya.repo.nii.ac.jp/records/10313
https://doi.org/10.1109/DEIV.2008.4676705
1093-2941
23rd International Symposium on Discharges and Electrical Insulation in Vacuum, 2008. ISDEIV 2008
1
13
16
https://nagoya.repo.nii.ac.jp/record/10313/files/ISDEIV-1.pdf
application/pdf
1.1 MB
2018-02-20