Title :
Studies on influence of magnetic field application to a small direct current vacuum arc
Author :
Miyamoto, Sadaaki ; Hanashiro, Syun ; Nikadori, Yuji ; Kaneko, Eiji
Author_Institution :
Grad. Sch. of Eng. & Sci., Univ. of the Ryukyus, Nishiharacho, Japan
fDate :
Sept. 28 2014-Oct. 3 2014
Abstract :
This paper presents current interruption of direct current in a vacuum. Arc voltage of the vacuum circuit breaker is several 10 V, therefore current limiting effect by the arc voltage is not expected. In addition, the arc continues to ignite in a stable state for a long arcing time such as several 100ms. It is well known that the application of transverse magnetic field to the arc reduces the arcing life time. Authors would like to clarify the relation between the arcing life time and the magnetic field by basic viewpoints. The magnetic field application from the transverse direction to the arc can induce instability phenomenon. In this paper, authors show some experimental result that applying the magnetic field to the arc.
Keywords :
ignition; plasma instability; vacuum arcs; vacuum circuit breakers; arc voltage; arcing life time; current limiting effect; direct current vacuum arc; instability phenomenon; magnetic field influence; time 100 ms; vacuum circuit breaker; voltage 10 V; Electrodes; Interrupters; Magnetic flux density; Magnetic separation; Transient analysis; Vacuum arcs;
Conference_Titel :
Discharges and Electrical Insulation in Vacuum (ISDEIV), 2014 International Symposium on
Conference_Location :
Mumbai
Print_ISBN :
978-1-4799-6750-6
DOI :
10.1109/DEIV.2014.6961648
