We are usingThree-phase asynchronous motorWhen, if the load of the drag exceeds the rated capacity, the electric machine will be overloaded, and some abnormal phenomena will occur. How to judge overload? What kind of phenomena will be produced?Shengzhou Senli MotorLet's discuss it with you.

       We usually say that the motor overload means that under certain circumstances, the actual power of the motor exceeds the rated power of the motor, which we call motor overload;Three-phase asynchronous motorThe main manifestations of overload are: the increase of heat; Low chirping, general vibration; The speed will go down, even down to zero; If the load has a drastic change, the speed will become high and low.

       The power supply is low. When the motor starts or runs at full load, the incoming line terminal voltage is not the no-load voltage of the line. When the load is fixed, if the power supply voltage is reduced, such as380The volt motor voltage is below360Volt, the current must increase, which causes the motor temperature rise too high;

       Insulation resistance drop. operationalThree-phase asynchronous motorIf long-term moisture, or corrosive gas erosion, it will reduce the insulation resistance, so that the electrical conductivity is stronger;

       Wrong connection. If it is a380Volt star motor, connected to a triangle, then the voltage will raise the current increase; On the contrary, if it's a triangle connection it's a starYThen the voltage will drop to220Volt, full load when the current will be greatly increased, the above two cases will cause it to burn;

       Mechanical cause. There are many kinds of mechanical failures, the common ones are bearing damage, equipment gridlock;

       Improper selection. Taking the centrifugal dehydrator as an example, the starting resistance is huge, the starting time is long, and the starting current is small and the starting torque is large. In terms of power selection should be left alone.

       The above content is composed ofThree-phase asynchronous motor manufacturersMori machineProvided, interested in this or want to know about our products can consult online message or call directly0575-8378-1127.