Welding current regulation by modern moving core magnetic shunt design,Stepless, smooth and infinitely variable current regulation,Adjustment of welding current possible even while welding is in progress; this enables fine current control,Compact in size and light in weight,‘Open-delta’ connected design enables transformation of 3-phase input into single phase output,Adequate open circuit voltage for all general purpose AC and ACDC electrodes,Convenient and easily manoeuvrable from job to job