... IGBT inverter and precision constant current feedback control technology, soft switch, DC output, 100 kHz of inverter frequency;2. Wide working ... , earth clamp, compressed air regulator, etc. Parameters of DC air plasma cutting tools LG-120: ModelSpec.LG-120 1 ... frequency50~60 HzPower supply capacity15 kVARated input current30 ANo-load voltage240 VOutput current range20-120 AOutput voltage range88-108 ...