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交流电焊机是钢铁构件修造业大量使用的设备。很多人已认识到电焊弧光对人体的灼烧伤害,但并不是很多人意识到电焊机次级空载电压对生命的威胁。交流电焊机在焊接过程,由于电焊机次级的回路阻抗很小,焊接电流很大,次级电压一般只有20 V左右,此时不会对人体形成电击威胁;而在停止焊接之后,电焊机次级的电压很快便恢复到50～85 V的额定范围(有的甚至高于85 V),这就是电焊机次级
AC welding machine is a large number of steel components used in the construction industry equipment. Many people have realized that electric arc welding burns the human body, but not many people realize that the secondary voltage of the welder threatens the life. AC welding machine in the welding process, the secondary circuit welding machine resistance is very small, the welding current is large, the secondary voltage is generally only about 20 V, this time will not pose a shock threat to the human body; and after stopping the welding, welding machine The secondary voltage quickly returns to the rated range of 50-85 V (some even higher than 85 V), which is the secondary welding machine