
Railway Applications - Fixed Installations - Electric Traction - Specific Requirements For Composite Insulators Used For Overhead Contact Line Systems (Iec 62621:2011)
出版:British Standards Institution

專(zhuān)家解讀視頻
2016 + A1 2016 [31/12/2016]2016 [31/03/2016]
Supersedes BS EN 50151. (03/2016) 2016 Edition Re-issued in December 2016 & incorporates AMD 1 2016. (01/2017)
EN 62621:2016 - Identical