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Experimental investigation of vacuum arc characteristics subject to axial magnetic field contacts with different ratios of diameter to gap distance.
- Source :
-
Physics of Plasmas . 11/1/2022, Vol. 29 Issue 11, p1-13. 13p. - Publication Year :
- 2022
-
Abstract
- In this study, to investigate vacuum arc characteristics under different diameter-to-gap distance ratios (D/g), experiments are conducted on axial magnetic field (AMF) contacts with varying D/g. The peak current value ranges from 15 to 35 kA. The experimental results show that the ability of AMF contacts to control the arc decreases with D/g. Furthermore, the 2/3 coil contact can control the arc under long gap distances, whereas the cup-shaped contact cannot effectively control the arc under long gap distances. The arc energy and noisy period duration decrease with increasing D/g. The arc voltage of the 2/3 coil contact at the peak moment is always the lowest compared to the cup-shaped contact and the 1/2 coil contact, and the arc voltage of the 2/3 coil contact at the peak moment has an approximate power function relation with D/g. The simulation results show that the AMF distribution changes from saddle shape to bell shape with decreasing D/g. The 2/3 coil contact is more suitable for high-voltage vacuum interrupters (VIs), while the cup-shaped contact is more suitable for medium-voltage VIs. [ABSTRACT FROM AUTHOR]
- Subjects :
- *VACUUM arcs
*MAGNETIC fields
*VACUUM circuit breakers
*DIAMETER
*VOLTAGE
Subjects
Details
- Language :
- English
- ISSN :
- 1070664X
- Volume :
- 29
- Issue :
- 11
- Database :
- Academic Search Index
- Journal :
- Physics of Plasmas
- Publication Type :
- Academic Journal
- Accession number :
- 160543258
- Full Text :
- https://doi.org/10.1063/5.0108725