1990IEC 60273:1990 Charactéristics of indoor and outdoor post insulators for systems with nominal voltages greather than 1000 V
1970IEC 60273:1979/COR1:1979 corrigendum 1 - Dimensions of indoor and outdoor post insulators and post insulator units for systems with nominal voltages greater than 1 000 V
1970IEC 60273:1979 Dimensions of indoor and outdoor post insulators and post insulator units for systems with nominal voltages greater than 1 000 V
1970IEC 60273:1968/AMD1:1972 Amendment 1 - Dimensions of indoor and outdoor post insulators and post insulator unit for systems with nominal voltages greater than 1 000 V
1970IEC 60273:1968 Dimensions of indoor and outdoor post insulators and post insulator unit for systems with nominal voltages greater than 1 000 V