Heating Effects of Short-Circuit Current Impulses on Contacts and Conductors—Part II
2008
An analytical description combined with the finite-element calculations of the current displacement caused by short-circuit current impulses in 1-D and 2-D 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 nonuniformity of the losses and the heating within the conductors.
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