Talking about the Application of the New Technology of No-stop Voltage Instantaneous Flicker for Coal Mine's GAF-type Main Ventilator
Liu Chon · Sci-Tech Information Development & Economy · 2011
In order to solve the phenomenon of the machine halt of coal mine's GAF-type main ventilators in thunderstorm season because of the frequent voltage instantaneous flicker,the coal mine adopted some measures such as inserting the power-off timing relay in the trip circuit of excitation cubicle and the low oil-pressure relay circuit of thin oil station,and using UPS in thin oil station's normal oil pressure relay KA5 and low oil-pressure relay KA10 and motor's closing coil.