A general method for the electro-thermal design optimisation of nontransitioning solid armatures with resistive contact regions is presented which predicts the maximum velocity at which transition to an arcing contact occurs. Comparison with a wide range of published experimental results supports the validity of the velocity skin-effect (VSE) model used. It is shown that the optimum combination of armature design parameters with copper rails requires a contact region resistivity within the range of molybdenum to titanium and that transition velocities, as limited by the VSE, of >2.5 km/s should be achieved with 90 mm bore armatures and these optimum parameters


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    Title :

    Resistive contact region solid armatures: electro-thermal design optimisation


    Additional title:

    Festkörperarmaturen mit elektrisch leitendem Kontaktbereich: elektrothermische Entwurfsoptimierung


    Contributors:
    James, T.E. (author) / James, D.C. (author)


    Publication date :

    1995


    Size :

    6 Seiten, 22 Quellen




    Type of media :

    Conference paper


    Type of material :

    Print


    Language :

    English




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