DIN EN ISO 17657-4-2007 电阻焊.电阻焊用焊接电流测量.第4部分:校验系统(ISO 17657-4:2005)
Resistance welding - Welding current measurement for resistance welding - Part 4: Calibration system (ISO 17657-4:2005); English version of DIN EN ISO 17657-4:2007-09
This part of ISO 17657 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.
The procedures are applicable for a current range between 0,5 kA and 25 kA.