ISO 17657-4:2005, Resistance welding - Welding current measurement for resistance welding - Part 4: Calibration system

ISO 17657-4:2004 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.initial_load7.txt