Welding source device of low impact load

The utility model relates to a welding source device of low impact load, including three -phase rectifier circuit module and welding output unit, welding output unit include welding source output module, soldering set, striking auxiliary device, welding auxiliary device and thyristor I, the three -phase rectifier circuit module be connected with three -phase AC power supply, the utility model discloses a striking auxiliary device makes the soldering set obtain the striking voltage that DC source voltage is higher than the output of three -phase rectifier circuit module, makes soldering set welding condenser when the normal weld to export the impact load of welding current, greatly reduced electric wire netting with welding source output module jointly through welding auxiliary device. 本实用新型涉及种低冲击负荷的焊接电源装置，包括三相整流电路模块和焊接输出单元，所述的焊接输出单元包括焊接电源输出模块、焊具、引弧辅助装置、焊接辅助装置和晶闸管Ⅰ，所述的三相整流电路模块与三相交流电源连接；本实用新型通过引弧辅助装置使得焊具获得比三相整流电路模块输出的直流电源电压更高的引弧电压，通过焊接辅助装置使得焊具在正常焊接时焊接电容器能与焊接电源输出模块共同输出焊接电流，大大降低电网的冲击负荷。