Interrupting capability of the AMF electrodes in the external transverse field

Author

Poluyanova, Irina N. ; Bugayov, Vladimir A.

Author_Institution

Tavrida Electr. Design Bur., Sevastopol, Ukraine

fYear

2012

fDate

2-7 Sept. 2012

Firstpage

244

Lastpage

247

Abstract

The paper demonstrates the results of experimental study of AMF CuCr electrodes interrupting capability in the presence and absence of an external transverse magnetic field. It is shown that the transverse magnetic field can significantly decrease the interrupting capability in case the long (7-9ms) arcs: under the experimental conditions the reduction of about 20% was observed. The decrease of interrupting capability is explained by the higher energy impact into the electrodes due to the rise of the arc voltage under TMF. Successfully interrupted energy density does not depend on the transverse magnetic field level. In the case of short (2.5-3.5ms) arcs the influence of transverse field on the interrupting capability is not revealed.

Keywords

copper compounds; electrical contacts; electrodes; magnetic fields; vacuum arcs; vacuum circuit breakers; vacuum interrupters; AMF electrodes; CuCr; arcs voltage; external transverse magnetic field; interrupted energy density; time 2.5 ms to 3.5 ms; time 7 ms to 9 ms; vacuum circuit breakers; Anodes; Discharges (electric); Insulation; Interrupters; Magnetic fields; Vacuum arcs;

fLanguage

English

Publisher

ieee

Conference_Titel

Discharges and Electrical Insulation in Vacuum (ISDEIV), 2012 25th International Symposium on

Conference_Location

Tomsk

ISSN

1093-2941

Print_ISBN

978-1-4673-1263-9

Electronic_ISBN

1093-2941

Type

conf

DOI

10.1109/DEIV.2012.6412498

Filename

6412498