Arc behaviour in axial magnetic field vacuum interrupters equipped with an external coil
- 27 November 2002
- conference paper
- Published by Institute of Electrical and Electronics Engineers (IEEE)
- Vol. 2, 514-517 vol.2
- https://doi.org/10.1109/deiv.1998.738704
Abstract
The simplicity of vacuum interrupters equipped with an external magnetic field coil makes them a privileged object of study. Commercial application has however been hindered by the ohmic losses in the coil. The latest developments allow a reduction of these losses. Their reduction also leads to a much lower applied axial magnetic field, close to the so called "minimum required axial magnetic field" strongly affecting both current distribution and contact erosion. A model is presented which allows estimation of current distribution, contact temperature and contact erosion. The model results are presented and compared with experimental results.Keywords
This publication has 2 references indexed in Scilit:
- Evaluation of AC axial magnetic fields needed to prevent anode spots in vacuum arcs between opening contactsPublished by Institute of Electrical and Electronics Engineers (IEEE) ,2002
- Use of Axial Magnetic Fields to Improve High-Current Vacuum InterruptersIEEE Transactions on Plasma Science, 1987