... feedback control technology, high efficiency for Plasma Cutter LG120 Features of Plasma Cutter LG1201. IGBT inverter technology and ... voltage protection,over-current protection, under-voltage protection;4. Secondary boost for arc striking, ensure no ... Completeaccessories: air cooling cutting torch, earth clamp, compressed air regulator,etc.Parameter of Plasma Cutter LG120 ModelSpec.LG120Power supply ...