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DC Vacuum Arc Extinction in a Transverse Axisymmetric Magnetic Field

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3 Author(s)
Alferov, D.F. ; All-Russian Electrotech. Inst., Moscow, Russia ; Belkin, G.S. ; Yevsin, D.V.

A statistical study of dc vacuum arc extinction in a vacuum interrupter (VI) with transverse axisymmetric magnetic field has been carried out at various external circuit parameters. The relationship between the maximum current that a VI can switch off and the magnetic field, the circuit inductance, and the VI shunt capacitance has been found. A statistical study has allowed us to define this maximum switched-off current with specified probability of failure. The possible causes of a VI failure are discussed.

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Plasma Science, IEEE Transactions on  (Volume:37 ,  Issue: 8 )