Different motor grades have different output speeds, so what are the commonly used motor grades and speeds, and what are the output speeds of common 2-stage motors, 4-stage motors, and 6-stage motors on the market. 1. Four commonly used motors and their speeds 2-stage motor: synchronous speed 3000, rotor speed 2600~29804-stage motor: synchronous speed 1500, rotor speed 1380-14806-stage motor: synchronous speed 1000, rotor speed zd900 to 9808-stage motor: synchronous speed 750, rotor speed 690 to 740 2. Motor pole pair number and synchronous speed formula Motor pole pairs are: 2.4.6.8. etc.Synchronous speed formula: n=60f/pIn the above formula, n——motor speed (rev/min); 60——per minute (second); f——power frequency (Hz); p——logarithm of the motor's rotating magnetic fieldBecause the asynchronous motor has a slip rate, the actual speed is lower than the synchronous speed. The specific actual speed is different from the motors produced by each manufacturer, but the difference is very small. Slip rate is also called slip rate. When the tire exerts traction or braking force, relative motion will occur between the tire and the ground. Varies with the size of the load. According to national standards and IEC standards, the full-load slip of general-purpose asynchronous motors is 1.5 to 5%. When the slip is zero, there is no slip, which is synchronous speed. Synchronous motor, no slip. When the slip is equal to 1, the motor does not rotate. Therefore, the rotation difference cannot be 0 or equal to 1.
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