NF C46-922*NF EN 60870-2-2:1997 Telecontrol equipment and systems. Part 2 : operating conditions. Section 2 : environmental conditions (climatic, mechanical and other non-electrical influences).
1997NF C46-922*NF EN 60870-2-2:1997 Telecontrol equipment and systems. Part 2 : operating conditions. Section 2 : environmental conditions (climatic, mechanical and other non-electrical influences).