| 摘要 |
PURPOSE: A welding machine is provided to simplify control lines into two lines because a two-line power line communication cable can perform power line communication with a main body, a wire feeder, and a torch unit. CONSTITUTION: A welding machine comprises a main body(110) providing power, a cable which is connected to the main body, a torch unit which is provided on the end of the cable and provided with power from the main body through the cable, a wire feeder(140) which is provided on the cable adjacent to the torch unit and feeds a wire to be welded, and a sub power connector(160) which is located in the wire feeder and provided with power from the main body.
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