LG多直流负，有的隔离接二次参考点。FG多先回中性点后中性点接大地；特殊系统偶有直接大地。fgh
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aAttached BOM and LG format for your use 为你的使用附加 BOM 和 LG 格式[translate] ai find i am so excited,i can barely sit still or hold a thought in my head,i think it the excitement only a free man can feel,a free man at the start of a long journey whose conclusion is uncert...