Frequency conversion speed control motor is generally selected 4-level motor, the base frequency operation point is designed at 50Hz, the frequency of 0-50Hz (speed 0-1480r/min) scale of the motor for constant torque operation, frequency 50-100Hz (speed 1480-2800r/min) scale of the motor for constant power operation, the entire speed regulation scale of (0-2800r/min), fundamentally meet the requirements of general drive equipment, its operating characteristics are the same as DC speed regulation motor, speed regulation smooth and stable. If you want to increase the output torque within the constant torque speed regulation scale, you can also choose a 6-stage or 8-stage motor, but the volume of the motor is relatively larger.
Because the electromagnetic design of the variable frequency speed regulation motor uses sensitive CAD design software, the fundamental frequency design point of the motor can be adjusted at any time, we can accurately simulate the operation characteristics of the motor at each fundamental frequency point on the computer, which also expands the scale of constant torque speed regulation of the motor, according to the actual application conditions of the motor, we can make the power of the motor larger in the same frame number, and also increase the output torque of the motor on the basis of using the same inverter. In order to be satisfied, the design and manufacture of the motor under various working conditions are in the best condition. The variable frequency speed motor can be equipped with an additional speed encoder, which can complete the advantages of high-precision speed, azimuth control, and fast dynamic characteristics. It can also be equipped with a special DC (or AC) brake for the motor to complete the fast, effective, stable and reliable braking performance of the motor.
The fundamental frequency adjustability design of the variable frequency speed control motor allows us to manufacture a variety of high-speed motors, which maintain the characteristics of constant torque during high-speed operation, which replaces the original intermediate frequency motor to a certain extent, and the price is low. The variable frequency speed regulating motor is a three-phase AC synchronous or asynchronous motor, according to the output power supply of the inverter, there are three-phase 380V or three-phase 220V, so the motor power supply also has a different difference between three-phase 380V or three-phase 220V, generally the inverter below 4KW can have three-phase 220V, because the inverter motor is based on the basic frequency point (or inflection point) of the motor to distinguish different constant power speed regulation area and constant torque speed regulation area, so the setting of the basic frequency point and the inverter is very important.
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LS GTH, GTK series thermal relay models
Thermal Overload Relay GTH-22
GTH series: GTH-22, GTH-40, GTH-85, GTH-100, GTH-150, GTH-220,
GTH-400、GTH-600、GTH-12M、GTH-12MH、GTH-12M、GTH-MH
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