Coal mine power supply anti-tripping system
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Coal mine power supply anti-tripping system
At present, in the underground high-voltage power supply system of coal mine, the distance of the power supply line is short, and the short-circuit protection time of the off-line switch of the ground substation is small. If a short-circuit fault occurs, the multi-stage switch is often tripped at the same time, which leads to a large area of underground power outage and seriously affects the safety production of the mine.
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