The paper introduced a new method to measure one phase current of mine electric power network which is a safe and practical method. The method is to have a resistance and a current meter in between one phase of the power network and ground. Then in between the neutral point and ground, there will be a displaced current and 0 voltage. With a phase voltage or a line voltage measured from the power network and 0 voltage or a current measured from the current meter, a current at a single phase directly grounded...
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