Daze Power 350A Diesel Generator Welding Machine TO350A

AC welding machine is a special type of step-down transformer. According to the characteristics and requirements of arc welding technology, there is a relatively high arc initiation voltage when unloaded55-80 VDuring normal welding, the arc voltage drop is30-40 VThe range of secondary current variation is large, generally100-500 AAnd it can adjust the size of the welding current. The schematic diagram of the AC welding machine is shown below:

Transformer secondary windingN2Compared to the iron core windingN3(reactor)In series, one section of the iron core is movable, and its position can be adjusted by shaking the handle to change the size of the air gap in the magnetic circuit. inI2When the size remains unchanged, the windingN3The magnitude of the pressure drop will also change, and the smaller the air gap, the greater the pressure drop. Therefore, adjusting the position of the movable iron core by shaking the handle also adjusts itU2followI2The degree of increase and decrease. When the adjustment handle is turned clockwise, the welding current increases;When rotating counterclockwise, the welding current decreases. In addition, the primary winding of the welding transformer has a middle tap, and people are added to different tapsU1,U2It is also different, which results in different open circuit voltages.