EN 50060:1989

This standard is applicable to welding power sources for manual metal arc welding with limited duty with covered stick electrodes. These welding power sources a) are limited to a rated maximum welding current of 160 A; b) are fitted with a thermal cut-out device; c) have performance based on the number of reference electrodes, capable of being melted with the welding power source in the cold and hot state and d) carry on their rating plate a declaration of the fuse size necessary for the maximum output. This standard is not applicable to rotating welding power sources or welding power sources with remote control or welding power sources incorporating frequency conversion. Note.- Inverter type welding power sources are excluded from this standard on the grounds that a) there are not yet available methods to test the safety of them b) they cause considerable harmonic distortions to the supply.