A Study of Transient Processes in a High-Current Vacuum-Arc Anode Spot Using High-Speed Spectroscopy and Videorecording

2021 ◽  
Author(s):  
A. V. Schneider ◽  
S. A. Popov ◽  
E. L. Dubrovskaya ◽  
A. Yu. Yushkov ◽  
A. V. Batrakov
Keyword(s):  
High Speed ◽  
Transient Processes ◽  
Vacuum Arc ◽  
High Current ◽  
Anode Spot

Study of anode spot transient processes of a high-current vacuum arc with high-speed spectroscopy and videorecording

2021 ◽  
Vol 64 (1) ◽  
pp. 112-117
Author(s):  
A.V. Schneider ◽  
◽  
S.A. Popov ◽  
E.L. Dubrovskaya ◽  
A.Y. Yushkov ◽  
...  
Keyword(s):  
High Speed ◽  
Arc Discharge ◽  
Circuit Breaker ◽  
Vacuum Arc ◽  
Charge Composition ◽  
High Current ◽  
Anode Region ◽  
Anode Spot ◽  
Vacuum Circuit Breaker ◽  
Switching Characteristics

The processes of plasma formation in the anode region of a high-current vacuum arc discharge are of high actuality in terms of improving the switching characteristics of vacuum circuit breaker. In present paper the dynamics of the radiation spectrum of anode region was recorded with the system that allows time scanning of a spectrum. In parallel, there was high-speed videorecording. The obtained data clearly show changes in the charge composition of the anode spot plasma in the process of changing discharge forms.

Critical flow of high-speed ions in a high-current vacuum-arc discharge

2007 ◽  
Vol 45 (4) ◽  
pp. 446-455 ◽  
Author(s):  
Ya. I. Londer ◽  
K. N. Ul’yanov
Keyword(s):  
High Speed ◽  
Arc Discharge ◽  
Vacuum Arc ◽  
Critical Flow ◽  
High Current

Observation of an anode spot shell at the high-current vacuum arc

2010 ◽  
Author(s):  
A. Batrako ◽  
A. Schneider ◽  
S. Rowe ◽  
G. Sandolache ◽  
A. Markov ◽  
...  
Keyword(s):  
Vacuum Arc ◽  
High Current ◽  
Anode Spot

scholarly journals Determination of Cr Density in the Active Phase of a High-current Vacuum Arcs

2017 ◽  
Vol 4 (2) ◽  
pp. 190-193 ◽  
Author(s):  
S. Gortschakow ◽  
A. Khakpour ◽  
S. Popov ◽  
St. Franke ◽  
R. Methling ◽  
...  
Keyword(s):  
High Speed ◽  
Active Phase ◽  
State Density ◽  
Vacuum Arc ◽  
Anode Surface ◽  
High Current ◽  
Electrode Gap ◽  
Broadband Absorption ◽  
Vapour Density

Melting and evaporation of the anode surface strongly influence the interruption capability of vacuum circuit breakers, because they lead to injection of atomic vapour into the inter-electrode gap. Determination of the vapour density and its dynamics with respect to different anode phenomena is therefore of great importance. Results of Cr density measurements in a high-current vacuum arc by using broadband absorption spectroscopy are presented. The vapour density of atomic Cr is determined after the formation of anode spots as well as close to the current zero. Cr I resonance lines at 425.43 nm have been used for the analysis. An AC current pulse with maximum value of 7 kA and a frequency of 100 Hz is applied to a vacuum arc between two cylindrical butt electrodes made of CuCr7525 with a diameter of 10 mm. The high-current anode modes are observed by means of high-speed camera imaging. The temporal evolution of the Cr ground state density is presented and discussed.

Selfconsistent Simulation of Development of Anode Spot in High Current Vacuum Arc

2020 ◽  
Author(s):  
Dmitry L. Shmelev ◽  
Mikhail M. Tsventoukh ◽  
Igor V. Uimanov ◽  
Lijun Wang ◽  
Sergey A. Barengolts
Keyword(s):  
Vacuum Arc ◽  
High Current ◽  
Anode Spot
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