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      2. How to transform the axial fan during the use of the frequency converter to save energy? When the axial fan is started, the current of the motor will be 5-6 times higher than the rated value, which will not only affect the service life of the motor, but also consume more electric axial fan inverter. When the system is designed, there will be a certain margin in the selection of the motor. The speed of the motor is fixed, but in actual use, it sometimes runs at a lower or higher speed. Therefore, it is very important to carry out frequency conversion transformation. Necessary. The frequency converter can realize the soft start of the motor, achieve the purpose of energy saving and speed regulation by changing the input voltage frequency of the equipment, and can provide the equipment with protection functions such as overcurrent, overvoltage, and overload.
        The transformation of the axial flow fan has a great effect on the energy saving of the frequency converter. T4-72 and 4-72 are two different series of centrifugal axial flow fans, which are currently the most commonly used in China, and they are two types of fans with better performance. , Are the products recommended by the former Ministry of Machinery Industry. The performance and purpose of these two fans are similar, but there are some differences in structure. The obvious difference is: T4-72 is a blade of equal thickness bent from steel plate, and 4-72 is an airfoil blade. T4-72 glass fiber reinforced plastic fan is actually a fan made of T4-72 structure and size with glass fiber reinforced plastic material instead of steel plate, and 4-72 glass fiber reinforced plastic fan is also available.

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