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Features : 1. IGBT Technology, high frequency 2. Wide range for input voltage 3. Digital meter to present and display welding current 4. Adjustable arc force, easy to strike the arc 5. Over current, overheat and under voltage protections are available Technical parameter : 1. Input power 3 Phase 380 V +/- 15%, 50/60 Hz 2. Rated input power 20.4 KVA 3. Output current 20 - 400 Ampere 4. Rated duty cycle at 40°C 400 A @60% 5. Protection grade IP21