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IEC 60947-5-6:1999 ed1.0

Действует
Low-voltage switchgear and controlgear - Part 5-6: Control circuit devices and switching elements - DC interface for proximity sensors and switching amplifiers (NAMUR) — 27 стр.
Applies to proximity sensors connected for operation by a two-wire connecting cable to the control input of a switching amplifier. The switching amplifier contains a d.c. source to supply the control circuit and is controlled by the variable internal resistance of the proximity sensor. These devices can be used in an explosive atmosphere if they also comply with IEC 60079-11.
ICS
29.130.20 Low. Including switchgear and controlgear assemblies / Низковольтная коммутационная аппаратура и аппаратура управления. Включая коммутационную аппаратуру и аппаратуру управления в сборе