The second is to consider the working environment of the motor.
Due to the large flying flowers, high temperature and long service time in the textile industry, to ensure the life of the motor, it is beneficial to use a slightly larger motor for long-term stable operation of the motor.
At present, the FX series motor of the 506 spinning machine spindle speed of the Jingwei textile machine is about 16000 rpm.
Load condition: the motor selected for the yarn in the small yarn
420 spindle 7KW8.5KW10KW15/7KW
456 spindle 8KW10KW11KW17/9KW
480 spindles 8.5KW10.5KW12KW18.5/11KW
516 spindle 9KW11KW13KW22/11KW
The choice of two frequency conversion motor
For the current variable frequency motor selected for the variable frequency spinning frame, they are improved on the basis of the Y series motor. We can see from Table 1 that the Y series motor has a lower efficiency when the load exceeds 60% of the rated load power of the motor. This is because the working temperature of the Y series motor is mostly not high, and the working time is 8 hours per day. Y series motors are designed with more motor cost than FX series motors, so they are less efficient than FX series motors, but they are also less expensive than FX series motors. If the Y series variable frequency motor is used on the spinning frame, it should use a larger motor. For example, the 420 spindle spinning machine is best to use 18.5KW motor, which adds some cost to the 15KW motor, but in the long run, its Maintenance costs and electricity costs are less, in other words it runs at a lower cost.
Load condition small yarn medium yarn large frequency variable frequency motor
420 spindle 7KW8.5KW10KW18.5KW
456 spindle 8KW10KW11KW18.5KW
480 spindles 8.5KW10.5KW12KW22KW
516 spindle 9KW11KW13KW22KW
The efficiency of the variable frequency motor is only 88%, although the price is lower. However, it is not recommended in the spinning frame.
