GOST 10390-2015 Electrical equipment at voltages of 3 kV and above. Test methods of electric strength of external insulation in conditions of contamination
2015GOST 10390-2015 Electrical equipment at voltages of 3 kV and above. Test methods of electric strength of external insulation in conditions of contamination
1986GOST 10390-1986 Electrical equipment for voltages 3 kV and higher. Test methods of electric strength of external insulation in conditions of contamination