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Article
A Method for Calculating of Нeating Closed High-Current Electric Contacts by Pulsed Currents
We propose an original method for numerical calculation of heating of high-current electric contacts in the closed state by pulsed currents with a duration comparable with the period of the industrial-frequenc...
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Article
Applicability Limits of the Holm–Kohlrausch Approximation to Determine Heating of High-Current Symmetrical Electric Contacts
On the basis of numerical simulation of heating of symmetric contacts with flowing current, conclusions were drawn about the accuracy of determining the temperature by the Holm–Kohlrausch method for various me...
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Article
A Way of Increasing Maximum Permissible Short-Circuit Surge Currents in Electrical Contacts
Current passing through electrical contacts causes additional heat release due to the presence of a contact resistance. Heat release in contacts may be considerable. In high-current contacts of high-voltage el...
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Article
Computer simulation and experimental study of transient processes in a single-phase voltage transformer
We perform simulation and experimental investigation of transient processes emerging in a single-phase transformer when it is connected to the network. The transformer model constructed taking into account the...
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Article
Influence of the Thomson effect on the pulse heating of high-current electrical contacts
Pulse heating of high-current contacts is notable for the presence of considerable temperature gradients in the contact area, which cause the Thomson effect—the appearance of thermoelectric currents. The amoun...