In mechanical applicationsThree-phase asynchronous motorHow many revs? Why does this speed happen? todayMori machineXiaobian will take you to understand.

       Three-phase asynchronous motorThe three phase symmetrical winding, after the three phase AC will produce a speed in the air gapn1=60f/pA rotating magnetic field.n1It's the rotational speed,fThe frequency of the power supply in China is50Hz,pIt's the number of magnetic poles, and this comes in pairs,2PMotor only1Against the magnetic pole.

       It is not difficult to find that there is a difference between this motor and the rated speed in actual use, such as us2The speed of the pole should be60*50/1=3000rpmAnd so on,4Very much60*50/2=1500rpmHowever, this motor can not reach this speed, which is related to its slip rate, the specific difference is more or less related to the quality of the motor material, such as the resistance of the better material rotor, then its speed may be close to the rated speed.

       Briefly speaking about this slip rate, it exists in order to enable this motor to produce current, if the rotor is synchronized with the rotating magnetic field, the rotor has no current, just like the transformer is unloaded. When it is loaded, the resistance moment of the load makes the rotor speed decrease, and the slip is generated, the rotor will induce current, and there will be electromagnetic torque, dragging the load to rotate.

       The above content is composed ofThree-phase asynchronous motor manufacturersMori machineIt is provided,19Year motor brand,3KWThe following small power motor manufacturers. If you still want to know about this type of motor or are interested in learning about our products, please leave a message online or call us directly0575-8378-1127.