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| Research and Application of Mine Underground High Voltage Supply System Electric Leakage Protection Technology |
| ZHANG Hao1, WANG Yan-li2 |
| 1. Chensilou Mine, Yongcheng Coal and Electricity Corporation Ltd., Henan Energy and Chemical Group, Yongcheng 476600，China; 2.Yongcheng Senior Middle School of Henan Province，Yongcheng 476600，China |
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Abstract Based on the current high voltage power supply system of mine electric leakage protection device existing problems, which was analyzed, the characteristics of the electric leakage protection in the mine actual production operation principle was put forward, and the current precision electric leakage protection principle, operation mode and performance were studied and discussed, which provided reference for the modern production of safety and reliability of power supply in mine.
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