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Simulation and verification of the arc behaviour in quenching chambers with splitter plates

: Rümpler, C.; Reichert, F.; Berger, F.; Stammberger, H.; Terhoeven, P.

Brno University of Technology, Faculty of Electrical Engineering and Communication:
XVIIth Symposium on Physics of Switching Arc 2007 : Brno, Czech Republic, 10-13 September 2007
Brno: Letohrad, 2007
ISBN: 978-80-214-3359-5
Symposium on Physics of Switching Arc <17, 2007, Brno>
Fraunhofer SCAI ()

The first part of the paper deals with the experimental investigation of the arc behaviour in quenching chambers of low-voltage devices with different splitter plate arrangements. Besides the measurement of the electrical quantities current and arc voltage, the pressure was recorded at different positions in the chamber wall. For the characterisation of the arc behaviour optical records were taken with a high speed video camera and with a high resolution digital imaging system simultaneously.
The influence of several parameters such as the shape, number and material of splitter plates on arc movement and arc voltage increase has been investigated.
In the second part of the paper, the numerical modelling of the arcing processes is presented. In the simulations a non-grey P-1 radiation model is applied to a three dimensional configuration. Details of the radiation model are presented in another paper of this conference. The comparison of results obtained with this model and with assumptions for the radiative transfer given in literature shows that in order to obtain good results it is very important to use a model for the radiative transfer close to reality. Additionally some numerical results concerning the arc splitting process are presented.