DS DS/EN ISO 17657-3
DS DSEN SO 17657-3 2007-JUL-05 Resstance weldng - Weldng current measurement for resstance weldng - Part 3 Current sensng col
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This part of ISO 17657 specifies current sensing coils of the toroidal-coil type as a current sensor for welding current meters or a welding current measuring system used to monitor the welding current in resistance welding, and is applicable for both current types, i.e. alternating current of 50 Hz or 60 Hz and direct current.