Dragging mechanical equipment has common faults

When the towed equipment has common faults, rotation is not easy or stuck, it will load the three-phase asynchronous motor and cause the winding resistance of the three-phase asynchronous motor to overtemperature. Therefore, in the maintenance of three-phase asynchronous motor overtemperature, the load index can not be ignored.

Dragging mechanical equipment load can not be all normal work

Although the machinery and equipment are equipped with supporting facilities, the load of the dragged machinery and equipment is abnormal in operation, and the load changes from time to time during operation, for example, the load of the motor becomes hot when the thresher is fed too much.

Left force motor

When the machine device is not paired

When the load output power of the three-phase asynchronous motor exceeds the maximum power of the motor, the motor will have a long-term load (that is, a small horse-drawn cart), causing the three-phase asynchronous motor to overtemperature. When repairing an over-temperature motor, it is necessary to find out whether the load output power is consistent with the rated power of the motor to avoid blindly following the trend and inadvertent disassembly and assembly.

Check the external power supply voltage, if the working voltage is too low is likely to cause this kind of situation.

The larger torque t of the three-phase asynchronous motor is positively correlated with the square meter of u, and the starting torque t is positively correlated with the square meter of u. Three-phase asynchronous motor is very sensitive to the fluctuation of power supply voltage. If the working voltage is reduced too much during operation, its load working capacity and motor torque will be reduced, and even the situation of not knowing the load or not starting at all will occur.

In order to better ensure the normal operation of the three-phase asynchronous motor and carry out reasonable maintenance, it is important to take into account the harmony between the three-phase asynchronous motor and the protection equipment. Especially in the application of small volume three-phase asynchronous motor in large space power network, the maintenance of mutual cooperation is more prominent.