
Overhead Electrical Lines Exceeding Ac 45 Kv - Part 2-20: National Normative Aspects (Nna) For Estonia (Based On En 50341-1:2012)
出版:British Standards Institution

专家解读视频
Pertains all new overhead electric lines with nominal system voltages exceeding AC 1 kV and with rated frequencies below 100 Hz.
Supersedes BS EN 50423-3 and BS EN 50341-3 which remains current. (05/2015)
EN 50341-2-20:2015 - Identical
EN 50341-2-20 : 2015 - Identical
EN 50341-2-20 : 2015 - Identical