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BS EN IEC 60974-5:2019 pdf free.Arc welding equipment. The WIRE FEEDER motor shall be loaded to provide a current corresponding to the MAXIMUM LOAD in accordance with 11.7 for all tests. WIRE FEEDERS designed for use with manual torches shall be capable of operating at rated welding current at 60 % duty cycle (6 min "on" and 4 min "off")...

BS EN IEC 60974-2:2019 pdf free.Arc welding equipment. As specified in 5.1 of IEC 60974-1:2017. Stand-alone cooling systems may be tested without a welding power source. Built-in cooling systems shall be tested with the welding power source. Measuring instruments. The accuracy of measuring instruments shall be:  a) electrical measuring instruments: class 1 (土1 % of full-scale reading)， except for the...