TY - GEN
T1 - High-current vacuum arc
T2 - 24th International Symposium on Discharges and Electrical Insulation in Vacuum, ISDEIV 2010
AU - Kong, Guowei
AU - Liu, Zhiyuan
AU - Wang, Dong
AU - Rong, Mingzhe
PY - 2010
Y1 - 2010
N2 - In order to understand the influence of the average opening velocity on the high-current vacuum arc anode phenomena, a high-speed photography was used to observe anode phenomena of vacuum arc discharge in vacuum interrupters. The contact diameters used in the vacuum interrupters were 12 mm and 25 mm, respectively. The contact materials included Cu, CuCr25, and CuCr50. The arc current frequency was 50 Hz and the arcing time was controlled at about 9 ms. A permanent magnet mechanism with a contact spring was used to adjust the average opening velocity from 1.3 m/s to 1.8 m/s. The experimental results showed that with the arc current increasing, there was a threshold current I1st (peak value) with which a high-current anode mode first appeared. And the first high-current anode mode was a footpoint at the velocity of 1.8 m/s. While at the velocity of 1.3 m/s, it was most probably an anode spot and sometimes it was a footpoint. The result showed that at the velocity of 1.8 m/s, the threshold current I1st was lower than that of the 1.3 m/s. And the threshold current I1st followed the order of Cu > CuCr25 > CuCr50 at both the velocities of 1.3 m/s and 1.8 m/s. Meanwhile, at the higher average opening velocity of 1.8 m/s, the arc energy and arc voltage were higher than or close to that with 1.3 m/s.
AB - In order to understand the influence of the average opening velocity on the high-current vacuum arc anode phenomena, a high-speed photography was used to observe anode phenomena of vacuum arc discharge in vacuum interrupters. The contact diameters used in the vacuum interrupters were 12 mm and 25 mm, respectively. The contact materials included Cu, CuCr25, and CuCr50. The arc current frequency was 50 Hz and the arcing time was controlled at about 9 ms. A permanent magnet mechanism with a contact spring was used to adjust the average opening velocity from 1.3 m/s to 1.8 m/s. The experimental results showed that with the arc current increasing, there was a threshold current I1st (peak value) with which a high-current anode mode first appeared. And the first high-current anode mode was a footpoint at the velocity of 1.8 m/s. While at the velocity of 1.3 m/s, it was most probably an anode spot and sometimes it was a footpoint. The result showed that at the velocity of 1.8 m/s, the threshold current I1st was lower than that of the 1.3 m/s. And the threshold current I1st followed the order of Cu > CuCr25 > CuCr50 at both the velocities of 1.3 m/s and 1.8 m/s. Meanwhile, at the higher average opening velocity of 1.8 m/s, the arc energy and arc voltage were higher than or close to that with 1.3 m/s.
UR - https://www.scopus.com/pages/publications/78650446148
U2 - 10.1109/DEIV.2010.5625830
DO - 10.1109/DEIV.2010.5625830
M3 - 会议稿件
AN - SCOPUS:78650446148
SN - 9781424483655
T3 - Proceedings - International Symposium on Discharges and Electrical Insulation in Vacuum, ISDEIV
SP - 202
EP - 205
BT - ISDEIV 2010 - 24th International Symposium on Discharges and Electrical Insulation in Vacuum, Proceedings
Y2 - 30 August 2010 through 3 September 2010
ER -