Abstract: In view of the importance of mine safety, mine in the high-yield and efficient mechanized mining face, apply high-power multi-voltage output of new mobile substations, explosion-proof intelligent high vacuum, low pressure switch, soft starter electromagnetic starter, explosion-proof combination of switches, Electric traction shearer, hydraulic supports electro-hydraulic control systems, computer security monitoring and communications systems and other new types of equipment. The application of these new devices to protect the coal mine safety, high-efficient, automated production.