Why motor burns

Save my name, email, and website in this browser for the next time I comment. Common Problems One of the first things you need to do is determine why the motor is broken in the first place. Here are some of the most common reasons why your motor stopped working: A short circuit can occur in the winding. The motor stops turning. Too much current was flowing through the motor, causing it to burn out. There might be too much vibration in the coils.

The insulation may wear out, causing a short. The motor may have an initial poor design. Speak with our professionals about the quality of your motor. You may need to try a new product. Misalignment may cause a motor to burn out. Premature bearing failure causes motor failure. Low resistance caused by corrosion, damage, and overheating leads to short circuits and leaks.

Dirt, debris, and precipitation can cause motors to overheat. Maintenance — A Preventative Approach Our professionals will determine whether your motor needs to be repaired, serviced, cleaned, or replaced outright.

Tags: electric motor , electric motors , motor repair , motor repairing. Nick on April 16, at pm. For instance, a three percent voltage imbalance can cause an 18 percent temperature rise in the motor. For proper motor operation, phase voltage imbalance should be less than one percent. Single phasing , a voltage unbalance that causes a three-phase motor to only run on two phases, can also result in motor failure. Often hard to detect, single phasing can cause a motor to burn out.

According to Purcell, A VFD will protect the life of a motor and help simplify speed control, starting, and stopping.

Consider avoiding these errors when it comes to installing and maintaining your electric motor:. Our Industrial Maintenance Technology IMT group provides a comprehensive list of maintenance and repair services including vibration analysis, lubrication, and laser alignment. If the motor bearing is overheated and lacks oil, if it is found that the temperature rise near the bearing is too high, it should be stopped immediately.

Whether the bearing rolling element and the raceway surface are cracked, scratched or damaged, whether the bearing clearance is excessively shaken, and whether the inner ring rotates on the shaft or the like.

In the case of any of the above phenomena, the bearings must be renewed before they can be reworked. Observe whether the motor has vibration, noise and abnormal odor.

If the motor vibrates, it will cause the load part connected to it to increase in different degrees of heart, and the motor load will increase.

If the motor is overloaded, the motor will be burnt. Therefore, in the operation of the motor, especially the high-power motor, it is necessary to check whether the anchor bolt, the motor end cover, the bearing gland, etc. Noise field sound and odor are precursors to the abnormal operation of the motor and serious faults. It must be discovered at any time to find out the cause and eliminate it.

Guarantee the normal operation of the starting equipment The technical state of the starting equipment of the motor plays a decisive role in the normal starting of the motor. Practice has proved that the vast majority of burned motors are mostly caused by improper starting of the equipment. If the starting device has a phase loss start, the contactor contacts are arced, fired, etc.

The maintenance of the starting equipment is mainly clean and fast.