DS DS/EN 60424-4
DS DSEN 60424-4 2001-AUG-20 Ferrte cores - Gude on the lmts of surface rregulartes - Part 4 Rng-cores
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This part of IEC 60424 gives guidance on allowable limits of surface irregularities applicable to ring-cores in accordance with the relevant generic specification defined in IEC 60424-1. This standard is considered as a sectional specification useful in the negotiation between ferrite core manufacturers and customers about surface irregularities.