Heating effects of short circuit current impulses on contacts and conductors

2008 
Summary form only given. An analytical description combined with finite element calculations of the current displacement caused by short-circuit current impulses in one- and two dimensional conductor models is presented. It is shown that in many cases the Joule-integral used in the technical practice gives a false representation of the thermal stress in the conductors and contacts. A simplified method is given for determining the degree of current displacement caused by different current impulses, hence the non-uniformity of the losses and the heating within the conductors.
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