I do pump sales ~ only to enter the line soon ~ often asked how many levels of motor? I can't recognize myself! So ask for advice here
With 3000 of the rated speed divided by motor, motor poles after rounding.The number of poles is two times the number of poles.
You can also use the motor speed divided by 50, equal to the motor series.
Look at the speed, see the modelFor example, the actual 1430r/min synchronous speed is 1500 rpm, the speed formula: speed = time (60 seconds) * frequency (50HZ) divided by the number of pole pairs one pole of 2 pole, which can be calculated 3000 83019 1500=2 on pole or 4 pole motor.See model is more straightforward: for example motor model is Y 132 M- 4Y, three-phase asynchronous motor, the three-phase asynchronous motor product name: YR for winding type asynchronous motor; YB explosion-proof induction motor; YQ high starting torque of asynchronous motor. ?132, a high center (mm)M code, frame length4, the number of polesFrom the motor nameplate marked, you can see that the motor is 2, model FW12-2, speed 2840
