Influce of Initial Opening Speed on Characteristics of a Drawn Vacuum Arc

XIU Shixin (修士新); YE Zhaoping (叶兆平); LI Quan (李泉)

Plasma Science and Technology > 2011 > 13(3): 376-380.

XIU Shixin (修士新), YE Zhaoping (叶兆平), LI Quan (李泉). Influce of Initial Opening Speed on Characteristics of a Drawn Vacuum Arc[J]. Plasma Science and Technology, 2011, 13(3): 376-380.

Citation:

XIU Shixin (修士新), YE Zhaoping (叶兆平), LI Quan (李泉). Influce of Initial Opening Speed on Characteristics of a Drawn Vacuum Arc[J]. Plasma Science and Technology, 2011, 13(3): 376-380.

Citation:

XIU Shixin (修士新), YE Zhaoping (叶兆平), LI Quan (李泉). Influce of Initial Opening Speed on Characteristics of a Drawn Vacuum Arc[J]. Plasma Science and Technology, 2011, 13(3): 376-380.

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Influce of Initial Opening Speed on Characteristics of a Drawn Vacuum Arc

State Key Lab of Electrical Insulation and Power Equipment, Xi'an Jiaotong University, Xi'an 710049, China

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Received Date: September 14, 2010

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Abstract

Abstract

Influence of the initial opening speed on the characteristics of drawn vacuum arcs for axial magnetic field (MF) vacuum interrupters (VIs) is studied using a high-speed charge- coupled device (CCD) camera. Two values of initial opening speed, 0.5 m/s and 1.5 m/s, were set to make a comparative study. The cup-type electrode was made of Cu-Cr (50%-50% in weight) with a diameter of 30 mm and a gap distance between electrodes of 10 mm. The results show that the transition time decreases by 0.5 ms when the initial opening speed increases from 0.5 m/s to 1.5 m/s at a peak current of 2.5 kA, while the transition time decreases by 1.0 ms when the initial opening speed increases from 0.5 m/s to 1.5 m/s at a peak current of 5.0 kA. The reason why the duration of the transition arc mode decreases is that the e®ect of electromagnetic force and Coulomb force among arcs is increased when the initial opening speed increases.
- opening velocity,
- vacuum arc,
- AMF

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