Title :
Switching vacuum arc in a pulsed transverse magnetic field
Author_Institution :
Inst. of Electr. Power Eng., Wroclaw Univ. of Technol., Poland
Abstract :
An experimental analysis of the vacuum arc behaviour in a pulsed transverse magnetic field with amplitudes up to 120 mT and frequency of 900 Hz is presented in the paper. The arc was produced between Cu contacts during the switching-off of a current half-wave of amplitude 500 A and frequency of 30 Hz. Arc photographs at the speed of 2000 frames/s and plasma parameter measurement using a Langmuir probe show that the Lorentz force acting on ions dominates in the arc displacement under the magnetic field in the tested conditions
Keywords :
circuit-breaking arcs; magnetic fields; switchgear testing; vacuum arcs; vacuum breakdown; vacuum interrupters; 120 mT; 30 Hz; 500 A; 900 Hz; Langmuir probe; Lorentz force; arc displacement; arc photographs; current half-wave switching; plasma parameter measurement; pulsed transverse magnetic field; switching vacuum arc; vacuum arc behaviour; vacuum interruption; Current measurement; Displacement measurement; Force measurement; Frequency measurement; Magnetic analysis; Magnetic field measurement; Magnetic fields; Magnetic switching; Plasma measurements; Vacuum arcs;
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.1998.738699
