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介绍了美国煤矿井下供电系统及设备、装置的组成。并对长壁采煤工作面电气设备的升压(2300V、4160V)过程及如何取得成功的经验作了概括性的介绍。
The composition of power supply system, equipment and devices in underground coal mine in the United States is introduced. And gives a general introduction to the process of how to boost the electrical equipment (2300V, 4160V) in longwall coal mining face and how to make it successful.