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我国煤矿井下普遍采用高压隔爆真空馈电装置进行高压供配电。由于煤矿许多场合的供电必须保证双回路,所以经常需要反送电,即由负荷侧向电源侧供电。例如两个回路定相时,一个回路有故障需倒用另一个回路时等。但是原有装置不能够进行反送电,电工在实际操作中是将失压保护甩掉,然后进行反送电。这种操作方法是非常不安全的,因此需
China’s coal mines commonly used high-pressure explosion-proof vacuum feeder for high-voltage power distribution. Since the power supply in many occasions in coal mines must ensure double circuits, it is often necessary to reverse power transmission, that is, power is supplied from the load side to the power supply side. For example, when the two loops are phased, one loop is faulty and the other loop is reversed. However, the original device can not carry out reverse power transmission. In actual operation, the electrician removes the voltage loss protection and then carries out reverse power transmission. This method of operation is very unsafe, so need