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第3章 三相交流电路...第3章 三相交流电路 99 不相关的单相供电系统。这样就要有六条输电线。为经济起见,通常把三个电压 源接成星形,如图3.3所示。交流电压源的负极性端(X、Y、Z端)连接在一起,构成一个节点,称为三相电源的中性点...或
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