Railway applications - Fixed installations - Electric traction - Specific requirements for composite insulators used for overhead contact line systems ( IEC 62621:2011) (english version)
Insulators for overhead lines - Composite suspension and tension insulators for a.c. systems with a nominal voltage greater than 1 000 V - Definitions, test methods and acceptance criteria— 57 стр.
Insulators for overhead lines - Composite line post insulators for A.C. systems with a nominal voltage greater than 1 000 V - Definitions, test methods and acceptance criteria— 54 стр.
Railway applications - Insulation coordination - Part 1: Basic requirements - Clearances and creepage distances for all electrical and electronic equipment— 107 стр.