This part of IEC 60974 is applicable to power sources for arc welding and allied processes
designed for industrial and professional use, and supplied by a voltage not exceeding 1 000 V,
or driven by mechanical means.

This part of IEC 60974 specifies safety and performance requirements of welding power
sources and plasma cutting systems.

This part of IEC 60974 is not applicable to welding power sources for manual metal arc welding
with limited duty operation which are designed mainly for use by laymen and designed in
accordance with IEC 60974-6.

This part of IEC 60974 is not applicable to testing of power sources during periodic
maintenance or after repai