This part of IEC 60974 specifies
a) applicable standard and test methods for radio-frequency (r. f.) emissions;
b) applicable standard and test methods for harmonic current emission, voltage fluctuations and flicker;
c) immunity requirements and test methods for continuous and transient, conducted and radiated disturbances including electrostatic discharges.
This standard is applicable to equipment for arc welding and allied processes, including power sources and ancillary equipment, for example wire feeders, liquid cooling systems and arc striking and stabilizing devices.