insulation resistance сопротивление изоляции 4 опір ізоляції 3 621.317 2 621.319 2 621.314 1 AC/DC IT networks 1 absorption characteristics 1 capacity 1 cumulative sum control chart 1 diode rectifier 1 double-pulsed bridge noncontrolled rectifier 1 earth fault location 1 efficiency 1 electrical insulation systems 1 equivalent circuit 1 insulation resistance decline alarming 1 low voltage AC IT networks 1 low voltage DC 1 manufacturing process stability 1 methods of two and three voltmeter readouts 1 phase and zone paper-impregnated insulation 1 polarization index 1 stability of the solution 1 the system of linear algebraic equations 1 threshold voltage 1 traction electrical machines 1 абсорбционные характеристики 1 абсорбційні характеристики 1 диодный выпрямитель 1