You must have met a lot of motor burn down, have a plenty of because of mechanical problems, have a plenty of the problem because of the heat, also have a plenty of because of lack of phase and burned, so how to avoid the burned motor? Keep the machine clean motor in the process of running, within 3 meters of inlets, can not have dust, water be soiled and sundry, otherwise once inhaled brushless motor, can form a short-circuit medium, or damage to the wire insulation layer, causing short circuit between the cartridge burning motor. So, to guarantee the safe operation of electric motor, be sure to keep the motor and the surrounding environment clean, so motor can maintain the safe and stable in the long run working condition. Ensure the motor working in the rated power flow often
motor overload operation, the main reason is that drag load is too large, low voltage, or driven by mechanical binding, etc. If the overload time is too long, the motor will absorb a large number of active power from the grid, current will increase rapidly, temperature rise, it is easy to make the motor burned. Often, therefore, to ensure that the motor working in the rated power flow, and will pay attention to check the gear operation, even the concentricity of shaft and gear transmission, etc. Pay attention to check the motor temperature staff to check the bearing of the motor, stator, shell and other parts of the temperature, especially for voltage, current and frequency monitoring and no motor overload protection, more should pay more attention to monitor the temperature rise, if found, high temperature should immediately stop check. In addition, the rolling element bearing, raceway surface, bearing clearance, and so on all need regular check. Any exception, have to update the bearing before operation. Observed with and without vibration and noise of the motor and abnormal smell appear vibration phenomenon, if the motor is connected with the load part not concentricity will also get higher, increase the motor load, overload operation will be burning motor. Noise and odor are a sign of motor malfunction, must pay attention to at any time. Therefore, the motor in operation, especially in high power motor maintenance network should regularly check more, look at the motor end cover, anchor bolt, bearing gland and so on whether to loosen, etc. , once found that the problem will be solve in time. Guarantee the normal work of the boot device in general, and the stand or fall of boot device determines the motor can be normal boot. According to the experience of the past, most of the motor burnt because boot device not work properly, such as the boot device appeared lack of phase, contactor contact arc, flint, etc. So how to maintain start brushless motor equipment? Mainly is clean, tighten, such as contactor contact not clean will make contact resistance increases, cause fever burned contact maintenance net, and then burning motor. Pay more attention to boot device so clean and tighten work electrical control cabinet should be located in dry and ventilated and location for easy operation, and dust collection on a regular basis.
