TY JOUR TI CLASSIFICATION OF FACTORS INFLUENCING THE COILED FAULTS IN TRANSFORMERS WITH 6-10/0, 4 KV VOLTAGE KW power supply KW power transformers KW winding isolation KW isolation wear-out KW inter-winding fault JO Bulletin of KSAU AU Sheryazov, S.K. AU Pyatkov, A.V. PY 2014 IS PB Krasnoyarsk State Agrarian University