Motor network is a kind of transform electrical energy into mechanical energy to electrical equipment. Y2 three-phase asynchronous motor manufacturers give us analyze the cause of the fire cause motor has several? (1) motor overload. Motor overload operation for a long time, being dragged mechanical load is too large and mechanical stuck to make motor stalling over current, stator winding from overheat and burst into flames. (2) motor fault. Motor stator winding alternate with, turn-to-turn short circuit or to ground insulation breakdown, cause burning fire insulation. (3) the power supply voltage is too low or too high. Electric motor, if the power supply voltage is too low, launch torque is small, the motor launch a long time or won't start, cause increase of motor stator current, winding overheating and fire; Operation of the motor, if the supply voltage is too low, smaller motor torque and mechanical load constant, the stator flow, make the heating winding and fire; If supply voltage has fallen sharply, the operation of the motor stalling and burned; If the supply voltage is too high, height of magnetic circuit, excitation current rising sharply, making core severe fever caused by electrical fire. (4) electric motor have launched many time long or short time, the stator winding temperature rise sharply, winding overheating caused a fire. Inhaled fibers, dust and blocked duct (5) motor, heat emissions, or the rotor with static son conflict, winding temperature rise caused by fire. 6. Motor open phase running. Motor operates a bolt or a photograph that fuse fusing, due to lack of phase function (The two phase operation), cause the overload of the stator winding hot fire. All landowners motor bearing lack of lubricating oil or grease dirt, make the damage of bearing stuck rotor, which resulted in increased stator current, the stator winding overheating on fire. End terminal touch too much resistance in high temperature, or loose connection electric spark a fire.
