2001IEC 60168:2001 Tests on indoor and outdoor post insulators of ceramic material or glass for systems with nominal voltages greater than 1000 V
2001IEC 60168:1994/AMD2:2000 Tests on indoor and outdoor post insulators of ceramic material or glass for systems with nominal voltages greater than 1000 V
1997IEC 60168:1994/AMD1:1997 Tests on indoor and outdoor post insulators of ceramic material or glass for systems with nominal voltages greater than 1000 V; Amendment 1
1994IEC 60168:1994 Tests on indoor and outdoor post insulators of ceramic material or glass for systems with nominal voltages greater than 1000 V
1988IEC 60168:1988 Tests on indoor and outdoor post insulators of ceramic material or glass for systems with nominal voltages greater than 1000 V