标准摘要
[中文适用范围]： ISO 17657的本部分规定了焊接电流测量系统、电流传感器、焊接电流表和带有电流传感器的监控装置的校准系统和校准程序，这些装置用于测量50Hz或60Hz交流电或直流电电阻焊中的焊接电流。 当前的。 该程序适用于 0.5 kA 至 25 kA 之间的电流范围。 [外文原描述]： ISO 17657-4:2005 specifies calibration systems and calibration procedures for welding current measuring systems, current sensors, welding current meters and monitoring devices with current sensor used for measuring welding current in resistance welding with alternating current of 50 Hz or 60 Hz, or with direct current.
英文名称Resistance welding — Welding current measurement for resistance welding — Part 4: Calibration system