IEC 60870-1-2:1989Telecontrol equipment and systems. Part 1: General considerations. Section Two: Guide for specifications
115.00 €
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IEC 60870-3:1989Telecontrol equipment and systems. Part 3: Interfaces (electrical characteristics)
235.00 €
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IEC TR 60870-1-1:1988Telecontrol equipment and systems. Part 1: General considerations. Section One: General principles
40.00 €
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