NF C46-921*NF EN 60870-2-1:1996 Telecontrol equipment and systems - Part 2 : operating conditions. Section 1 : power supply and electromagnetic compatibility.
1996NF C46-921*NF EN 60870-2-1:1996 Telecontrol equipment and systems - Part 2 : operating conditions. Section 1 : power supply and electromagnetic compatibility.