Title :
Vacuum arc in relative short gap length
Author :
Wang, Y. ; Tuurspeik, A. ; Luo, L.Q. ; Li, Y.L.
Author_Institution :
Dept. of Electromagn. Eng., Dalian Univ. of Technol., China
Abstract :
The characteristics of vacuum arcs are greatly related to the gap length. In short gaps, the critical current of anode spot formation is lower than that in long gaps. The higher arc voltage is also accompanied by the constriction of the arc column near the cathode. It is suggested that the fast accumulation of the electron and thermal effects in the local area of the anode surface contribute to anode spot formation and the instability of the arc voltage
Keywords :
anodes; critical currents; vacuum arcs; anode spot formation; anode surface; arc column constriction; arc voltage; critical current; electron effects; gap length; long gaps; short gaps; thermal effects; vacuum arc characteristics; Anodes; Cathodes; Circuit breakers; Electrodes; Electrons; Low voltage; Magnetic fields; Magnetic materials; Vacuum arcs; Vacuum technology;
Conference_Titel :
Discharges and Electrical Insulation in Vacuum, 1998. Proceedings ISDEIV. XVIIIth International Symposium on
Conference_Location :
Eindhoven
Print_ISBN :
0-7803-3953-3
DOI :
10.1109/DEIV.1998.740642
