With the improvement of the level of automation of mine, manual valve is difficult to adapt to the needs of modern development in the transformation of the old mine shaft or new designs are widely used in electric valves. The company's coal mine explosion-proof electric valve actuators (the electrical device), is designed to improve mine valve automation systems developed, and KXBC flameproof electric valve actuators control box for electrical devices supporting the product. The product complies with the company's corporate standard Q / 3204CN002-2011 "flameproof electric valve actuators control box technical conditions" requirement; meet GB3836.1-2010 "explosive atmospheres - Part 1: General requirements for equipment"; GB3836. 2-2010 "Explosive atmospheres - Part 2: by flameproof" d "protection equipment" and GB3836.3-2010 "Part 3: by increased safety" e "to protect equipment." The product has a link with the DCS system interface functions in the electrical performance design, so that the control box used in the automation system is more comprehensive, reliable, on the basis of the control box with a short-circuit protection, overload protection, undervoltage protection, leakage protection, over-torque protection, phase protection and phase sequence automatically correct identification of other functions, and setting the travel control, remote / local control switching function, making it practical function even better. The control box in addition to ensuring proof exterior design performance, but also has to prevent misuse of the mechanical and electrical interlock function, so that the device is safe and reliable to use. On this basis, to monitor equipment operation, this product also set up to monitor a variety of operating instructions, such as power indicator, open valve instructions, close the valve instructions, over torque indication, fault indication and valve opening is displayed. 

keywords: Control box, coal safety certificate, performance,