The device improves the security of the colliery power distribution system greatly.
2
实际运行证明，该系统提高了煤矿供电的安全性和可靠性。
The practice verifies that the integrated automation system improve the safety and reliability of coal mine power supply.
3
介绍了煤矿供电保护存在的问题，提出了微机化改造方案的特点、效果等。
The problems existed in electric supply protection for coal mine are introduced, and the features and result of the computerisation reform plan are provided.
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