GOST 14868-1972 Electric motor convertors with rated power from 8 to 200 kW and frequency from 1000 hz and above Frincipal quantities. Basic parameters
1997GOST 14868-1997 Electric motor frequency convertors with rated power up to 200 kW and frequency to 20000 Hz. Basic parameters
1972GOST 14868-1972 Electric motor convertors with rated power from 8 to 200 kW and frequency from 1000 hz and above Frincipal quantities. Basic parameters