FXD textile special motor
Load condition no load 30% load 50% load 60% load full load
Power factor 0.40.780.820.850.89
Efficiency 0.60.870.900.910.89
FX series textile high-efficiency motors are specially designed according to the special environment of the textile industry. The diameter and length of the motor core of the same power are increased, that is, the amount of copper and iron used are increased a lot, and the cost of the motor is also increased. A lot, but the benefit is increased efficiency, efficiency can reach 91.5% in 4-pole operation, the power consumption of each spinning frame is reduced, and the annual electricity consumption is greater than the increase of motor cost.
The first step: the power of the motor should be selected according to the power required by the production machine. Try to make the motor work in the high efficiency zone.
Pay attention to the following two points when choosing:
(1) If the motor power is too small, there will be a phenomenon of “small horse-drawn cart”, causing the motor to be overloaded for a long time. The insulation is damaged by heat. Even the motor is burnt.
(2) If the motor power is selected too large. There will be a "big horse car" phenomenon. The output mechanical power cannot be fully utilized, and the power factor and efficiency are not high (see table), which is not only bad for users and the power grid. It also causes a waste of electricity.
To correctly select the power of the motor, it is necessary to consider the cost of the motor, and also consider the cost of the motor running, so that the motor works in the most efficient range.
For example, the load change rule of 420 spindle 506 spinning machine is that the power from small yarn to large yarn is increased from 7KW to 10KW. According to the above table, the motor is the most efficient at 60% load. The motor in the textile industry is basically 24 hours continuous operation, working efficiently. The area is very good for reducing operating costs, so we use the higher-priced FXD series of motors, the power is 15/7KW is suitable.
