在手工电弧焊中,由于更換焊条或接触工件与工作台时,常常会发生麻电現象。这种情况,对于低窪潮湿及高温充滿酸气的場所,或在金属構架上和容器內工作时,均有很大的危險。我校焊工邦清与技术員李天佑兩同志,参考国外电焊机上的安全断电裝置原理,自行設計了一种安全断电器,綫路如图所示。这种断电器的構造簡單,裝置費用低廉;全部裝置包括鉄芯、起动线 In manual arc welding, due to the replacement of welding rod or contact with the workpiece and workbench, hemp often occurs. This situation is very dangerous for low-lying wet and hot places filled with sour gas, or working on metal frames and containers. Our school welder Bang Qing and technician Li Tianyou two comrades, with reference to the principle of safe power off device on the foreign welding machine, designed a kind of safety breaker, the line is shown as follows. This breaker has the advantages of simple structure and low installation cost. All the devices include a core, a starting wire