Reference Date Title Language EN 60168:1994/A1:1997 1997-07-09 Tests on indoor and outdoor post insulators of ceramic material or glass for systems with nominal voltages greater than 1 kV     EN 61462:2007 2007-10-19 Composite hollow insulators - Pressurized and unpressurized insulators for use in electrical equipment with rated voltage greater than 1 000 V - Definitions, test methods, acceptance criteria and design recommendations     EN 60168:1994/A2:2000 2000-12-15 Tests on indoor and outdoor post insulators of ceramic material or glass for systems with nominal voltages greater than 1 kV     EN 62155:2003 2003-08-13 Hollow pressurized and unpressurized ceramic and glass insulators for use in electrical equipment with rated voltages greater than 1 000 V     EN 60660:1999 1999-12-09 Insulators - Tests on indoor post insulators of organic material for systems with nominal voltages greater than 1 kV up to but not including 300 kV     EN 60168:1994 1994-12-21 Tests on indoor and outdoor post insulators of ceramic material or glass for systems with nominal voltages greater than 1 kV     HD 578 S1:1992 1992-07-17 Characteristics of indoor and outdoor post insulators for systems with nominal voltages greater than 1 kV     EN 62231:2006 2006-12-22 Composite station post insulators for substations with a.c. voltages greater than 1 000 V up to 245 kV - Definitions, test methods and acceptance criteria