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建筑工地的电焊机应用最多的是交流弧焊机。这种电焊机其结构原理属于漏磁式变压器,焊机电源一般为380V,但有的小型交流电焊机使用220V电源。交流电焊机供电电源接线时,要注意焊机铭牌上所标出的一次电压数值。380V的焊机电源须接至两相间;220V的焊机电源须接于单相上。众所周知,三相用电负荷的平衡是三相交流电路节省电能、保证电压品质的重要途径之一。为了保持工地供电线路的三相负荷尽可能趋近平衡,在同一地点同时使用多台电焊机时,其电源接线应分别接自三相网
Construction site welding machine is the most widely used AC arc welding machine. The structure of this welding principle belongs to the magnetic flux leakage transformer, welding power supply is generally 380V, but some small AC welder 220V power supply. AC welding power supply wiring, pay attention to the welding machine nameplate marked on a voltage value. 380V welder power supply must be connected to the two phases; 220V welder power supply must be connected to a single phase. As we all know, three-phase power load balance is three-phase AC circuit to save energy, voltage quality is one of the important ways. In order to maintain the three-phase load on the power supply line of the site as close to equilibrium as possible, when multiple welding machines are used simultaneously in the same place, their power wiring should be respectively taken from the three-phase network