---------- Original message from Rains,Mike ---------- > I have an application that requires SELV separation of relay coil-contact > circuits to IEC 950 requirements. One vendor has a relay that is BABT > certified to Clauses 4.2.1, 4.2.3(a), 4.4.2 and 4.5.1 of BS EN 41003:1991. I > don't have EN 41003. Are the requirements stated in the referenced clauses > of BS EN 41003:1991 equivalent to the IEC 950 requirements for > reinforced/double insulation for separation of SELV circuits from 240 Vac > mains? Thanks. > > Regards, > > Mike Rains > Foxboro Co.
Mike EN41003: 1991 (which has since been replaced by EN41003: 1993 and EN41003: 1997) contains virtually the same requirements as clause 6 of EN60950: 1992. In fact EN41003: 1993 refers to EN60950 clauses all the way through. The corresponding clauses are: EN41003 clause 4.2.1 -- EN60950 clause 6.2.1.2 EN41003 clause 4.2.3(a) -- EN60950 clause 6.2.1.4(a) EN41003 clause 4.4.2 -- EN60950 clause 6.3.3 EN41002 clause 4.5.1 -- EN60950 clauses 6.4.1 and 6.4.2 Clause 4.2.3(a) should cover double/reinforced insulation requirements between SELV and 240VAC mains. Regards ------------------------------ Ben Wrigley Approvals Specialist KTL Newlands Science Park Inglemire Lane Hull HU6 7TQ UK Phone: +44 (0)1482 801801 Fax: +44 (0)1482 801806 Web: http://www.ktl.co.uk Email: [email protected]
