DC vacuum arc extinction in a transverse axisymmetric magnetic field

Author

Alferov, D. ; Belkin, G. ; Yevsin, D.

Author_Institution

Russian Electrotech. Inst., Moscow

Volume

2

fYear

2008

fDate

15-19 Sept. 2008

Firstpage

402

Lastpage

405

Abstract

A statistic study of the DC vacuum arc extinction by a vacuum interrupter (VI) with a transverse axisymmetric magnetic field has been carried out at various external circuit parameters. The dependences of the breaking current on the magnetic field and the VI shunting capacity have been found. The executed statistic study has allowed defining the breaking current with the specified probability of failure. The model of evolution of a non-stationary layer of a negative volumetric charge near the anode is proposed. This model satisfactorily describes the experimental forms of current and voltage in the final high-voltage stage of the vacuum arc extinction. The developed model made it possible to estimate the temperature of anode surface heating in the arc extinction phase.

Keywords

probability; statistical analysis; vacuum arcs; vacuum circuit breakers; vacuum interrupters; DC vacuum arc extinction; anode surface heating temperature; breaking current; external circuit parameters; failure probability; negative volumetric charge; nonstationary layer; shunting capacity; statistic analysis; transverse axisymmetric magnetic field; vacuum interrupter; Anodes; Interrupters; Magnetic circuits; Magnetic fields; Phase estimation; Probability; Statistics; Temperature; Vacuum arcs; Voltage;

fLanguage

English

Publisher

ieee

Conference_Titel

Discharges and Electrical Insulation in Vacuum, 2008. ISDEIV 2008. 23rd International Symposium on

Conference_Location

Bucharest

ISSN

1093-2941

Print_ISBN

978-973-755-382-9

Electronic_ISBN

1093-2941

Type

conf

DOI

10.1109/DEIV.2008.4676813

Filename

4676813