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  1. No Access

    Article

    Verification of the boundaries of the applicability of the holm approximation for the calculation of the resistance of electric contacts

    This paper presents the computation results for the passage of a current through electrodes of various shapes. In particular, cylindrically shaped contacts and rectangular current-carrying buses are considered...

    O. M. Pavleino, V. A. Pavlov, M. A. Pavleino in Surface Engineering and Applied Electroche… (2010)

  2. No Access

    Article

    Effect of the spreading of the contact spot on the pulsed heating of electrodes

    A numerical calculation of the pulsed heating of electrical contacts in a wide temperature range up to the melting point is carried out on the basis of experimental oscillograms of the electrode voltage and cu...

    O. M. Pavleino, V. A. Pavlov, M. A. Pavleino in Surface Engineering and Applied Electroche… (2011)

  3. No Access

    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...

    A. G. Merkushev, M. A. Pavleino, O. M. Pavleino, V. A. Pavlov in Technical Physics (2014)

  4. No Access

    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...

    A. V. Kruzhaev, I. A. Elagin, M. A. Pavleino, V. A. Dmitriev… in Technical Physics (2015)

  5. No Access

    Article

    On Peculiarities of Welding and Destruction of the Surface of High-Current Layered Contacts by Pulsed Currents

    Numerical modeling of the impact of short-duration pulsed currents on closed high-current copper- coated aluminum contacts is carried out. The modes of the current effects are studied which induce a significan...

    A. M. Chalyi, V. A. Dmitriev, M. A. Pavleino… in Surface Engineering and Applied Electroche… (2018)

  6. No Access

    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...

    A. M. Chalyi, V. A. Dmitriev, M. A. Pavleino, O. M. Pavleino… in Technical Physics (2019)

  7. No Access

    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...

    D. I. Begal’, M. A. Pavleino, O. M. Pavleino, M. S. Safonov… in Technical Physics (2019)

  8. No Access

    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...

    M. A. Pavleino, O. M. Pavleino, M. S. Safonov in Technical Physics (2021)