ELECTROMECHANICAL TRANSIENT PROCESSES DURING SUPPLY VOLTAGE CHANGING IN THE SYSTEM OF POLYMER INSULATION COVERING OF THE CURRENT-CARRYING CORE OF ULTRA HIGH VOLTAGE CABLES Journal title: Електротехніка і Електромеханіка Authors: V.M. Zolotaryov, M.A. Shcherba, R.V. Belyanin, R.P. Mygushchenko, I.M. Korzhov Subject(s):