Shammas Noel

Monday 7
A. Arcs
Chair: Y. Tanaka - Each talk is 10'+2' duration
› 16:15 - 16:30 (15min)
› Cabannes
Empirical Model for Quasi Direct Current Interruption with a Convoluted Arc
Leonid Shpanin  1@  , Gordon Jones  2@  , Jim Humphries  2@  , Joe Spencer  2@  , Noel Shammas  3@  , Sarath Tennakoon  3@  
1 : University of Warwick
2 : University of Liverpool
3 : Staffordshire University

This contribution considers various aspects of a quasi direct current, convoluted arc produced by a magnetic field (B-field) connected in parallel with an RLC circuit that have not been considered in combination. These aspects are the arc current limitation due to the arc convolution, changes in arc resistance due to the B-field and material ablation, and the relative significance of the RLC circuit in producing an artificial current zero. As a result, it has been possible to produce an empirical equation for predicting the current interruption capability in terms of the B-field magnitude and RLC components.


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