General Introduction; Electrical Diagrams - Yeswelder MIG PRO-200 User Manual

2. General introduction

MIG PRO-200,MIG-250 PRO-250 CO2/MIG/GASLESS MIG/MMA/LIFT TIG Welding Machines are
manufactured based on the internationally advanced inverter technology.The working principle is to invert
50/60Hz alternative current into direct current first. Then the direct current is inverted into high frequency
alternative current (20KHz) by IGBT components before it is rectified. Machines in this series have features
as follow:
★ IGBT Inverter technology, current mode control. Reliable quality and stable performance.
★ Closed circuit feedback with constant voltage output. Good resistance to voltage fluctuation. (
15%)
±
★ Electric reactor control, stable welding process with little splash, deep welding pool and beautiful welding
seam.
★ Slow wire-feeding for arc start and tip ball removing after welding ensure high success rate of arc start.
★ Suitable for welding thin and medium metal sheet of above 8mm thickness.
★ Small measurement, light weight, easy operation, practical and economical.
★ The efficiency of this machine is above 85%. It saves above 30% energy compared with the conventional
welding machines.

3. Electrical diagrams