标准摘要
[中文适用范围]： ISO 17657的这一部分规定了环形线圈类型的电流传感线圈作为焊接电流表的电流传感器或用于监测电阻焊中焊接电流的焊接电流测量系统，并且适用于两种电流类型，即交流电50 Hz 或 60 Hz 直流电。 [外文原描述]： ISO 17657-3:2005 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.
英文名称Resistance welding — Welding current measurement for resistance welding — Part 3: Current sensing coil