60947-5-2-2007 Appareillage à basse tension – Partie 5-2: Appareils et éléments de commutation pour circuits de commande – Détecteurs de proximité (Edition 3.0)
Low-voltage switchgear and controlgear – Part 5-2: Control circuit devices and switching elements – Proximity switches (Edition 3.0)
Appareillage à basse tension – Partie 5-2: Appareils et éléments de commutation pour circuits de commande – Détecteurs de proximité (Edition 3.0) 是非强制性国家标准，您可以免费下载前三页
Scope and objectThis part of IEC 60947 applies to inductive and capacitive proximity switches that sense the presence of metallic and/or non-metallic objects@ ultrasonic proximity switches that sense the presence of sound reflecting objects@ photoelectric proximity switches that sense the presence of objects and non-mechanical magnetic proximity switches that sense the presence of objects with a magnetic field.These proximity switches are self-contained@ have semiconductor switching elements(s) and are intended to be connected to circuits@ the rated voltage of which does not exceed 250 V 50 Hz/60 Hz a.c. or 300 V d.c. This Standard is not intended to cover proximity switches with analogue outputs.The object of this standard is to state for proximity switches:?C definitions;?C classification;?C characteristics;?C product information;?C normal service@ mounting and transport conditions;?C constructional and performance requirements;?C tests to verify rated characteristics.