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IEC 60870-2-2 Ed. 1.0 b:1996
Telecontrol equipment and systems - Part 2: Operating conditions - Section 2: Environmental conditions (climatic, mechanical and other non electrical influences)
Applies to telecontrol equipment and systems with coded bit serial data transmission for monitoring and control of geographically wides pread processes. Specifies classes for environmental conditions under which the various components of the systems have to operate.
International Electrotechnical Commission [iec]