Remark: every wire of the three-phase five-wire system is clearly indicated on the front panel.

注：每一块面板清晰显示三相五线制电源的母线、支线。

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The hardware of the system comprises the five sub-systems, i. e. welding power source, arc length controller, welding wire feeder, welding head traveller and detector.

此系统的硬件主要包括五个子系统，即：焊接电源、弧长控制器、送丝机构、焊矩行走机构和检测机构；

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