YFBBP3 series dust explosion-proof type frequency control of motor speed three phase asynchronous motor is totally enclosed forced air.cooled type thre-phase asynchronous motor, have a good speed regulating performance, energy conservation and high eficiency, compactstructure, high temperature allowance is big, long life, good performance, little vibration, low noise, explosion-proof advanced structure, goodappearance, high reliability, and is equipped with non-stop oiling device, and can according to user needs. increase the bearina temperaturemeasurement. the stator temperature. space heater, etc, This series motor GB12476.1 conforms to the national standard "combustible dustenvironment with electrical eouimnt pat 1: deneral reouirements and GB12476 5-2013 the combustible dust environment part 5: with electricaequipment enclosure protection type" D ", Explosion-proof marks for the Ex tD A21 IP65 T135 C,the Ex tD A22 IP55 T135 C, use in theenvironment of the sites with explosive dust mixture to do power drag.