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BS EN 60947-5-3-1999
Niederspannungsschaltgeraete. Steuergeraete und Schaltelemente. Anforderungen fuer Naeherungsschalter mit definiertem Verhalten unter Fehlerbedingungen (PDF) Low-voltage switchgear and controlgear. Part 5-3:Control circuit devices and switching elements. Requirements for proximity devices with defined behaviour under fault conditions (PDF) Appareillage a basse tension. Appareils et elements de commutation pour circuits de commande. Prescriptions pour dispositifs de detection de proximite a compo
适用范围:This part of IEC 60947 applies to proximity devices with an enhanced resistance to failure (PDF) It specifies requirements for four different types of PDF.NOTE-Due to their enhance resistance to failure, PDFs apply for instance to:-interlocking devices (see ISO 14119);-the detection of the presence or absence of protective devices (see ISO/TR 12100-1)For a PDF used inapplications where additional characteristics, deal with in other standards, are required, it will be necessary to satisfy the requirements of all relevant standards.
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