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Induction motor is widely used, but by long-running, all kinds of faults occur, promptly determine cause of the malfunction, be treated accordingly to prevent the failure to expand, to ensure normal operation of an important job. 1, is powered electric motor can not rotate, but no abnormal sound, nor smell and smoke. 1. Fault Power supply Did not pass (at least two phases did not pass); fuse fuse (at least two-phase fuse); After over-current Electrical Stressed too small; control equipment wiring error. 2. Troubleshooting Check the power circuit switch, fuse, terminal box office whether there is a breakpoint, repair; check the fuse model, fuse reason, renewal fuse; regulator and motor relay with the setting value; correct wiring. Second, after the motor power is not transferred, and then fuse burns out 1. Fault lack of a phase power, or will take the opposite route of a circle; stator winding short circuit; stator winding ground; stator winding connection errors; fuse section is too small; power line short circuit or grounding. 2. Check Troubleshooting Knife Gate whether there is a phase not Gehao can break the power circuit has a phase; eliminate reverse fault; identified short circuit point, be restored; eliminate ground; mistakenly identified then be corrected; replacement fuse; Elimination take place. Third, power is not transferred there after the motor hum L. Fault stator and rotor windings are open circuit (a phase wire) or a relative loss of electrical power; Lead circumstances leading to termination winding winding internal fault or reversed; loose the power circuit contacts, contact Resistance Large; Motor load is too large or rotor stuck; supply voltage is too low; too tight or small motor assembly Bearing Within the oil perfect; bearing stuck. 2. Troubleshooting identify the breakpoint be restored; Check winding polarity; determine the end winding is correct; fastening screw loose connection with Multimeter Determine whether the false accept the joint, to repair; load shedding or identify and eliminate mechanical failure, surface under examination is connected in Hai Ba erroneous connection to Y; it because the power supply wire and carefully so that the pressure drop is too large to be corrected, re-assembly to make it flexible; replacement of qualified oil; repair bearings. 4, motor starting problems, rated load, the motor speed below the rated speed of more 1. Fault supply voltage is too low; Surface Connection Motor Wrong then the Y; cage rotor welding or broken open; local rotor coil wrongly, then anti-; repair motor windings when the excessive increase in the number of turns; motor overload. 2. Troubleshooting measure the supply voltage, to improve; correct access method; check and break open and repair welding; access Department detected errors be corrected; to restore the correct number of turns; Load Shedding. 5, the motor load current imbalance, phase difference between the large 1. Fault Rewind, stator winding turns are not equal; wrong winding termination end to end; supply voltage imbalance; windings turn to turn short circuit, reverse, etc. coil failure. 2. Troubleshooting re-development of children around the winding; check and correct; measure the supply voltage, to eliminate imbalances; In addition to steep winding fault. The e-commerce company in China offers quality products such as China Chest & Cabinet , China Work Bench, and more. For more , please visit Chest & Cabinet today!
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