... welder machine 2.Three PCB structure, 3.single-phase/three phase, 4.fan-cooled,themostatic protection [Performance characteristics] ... be adjusted5.with a variety of security features6.temperature protection, overcurrent protection, short circuit protection, phase loss ... for mobile operation[Technical parameters] Type IGBT-250ARatedinput voltage / frequencyAC 220V/380V+15%Ratedinput capacity(KVA)7 ...