ABB LD800HSE module 3BDH000320R0101 is used to install HSE connectors on 4H1DIN rail
Brand ABB height 19mm rated current 60mA
Protection level adapted to motor power Applicable site Material code
IP45 28KW Power industry HIEE401782R0001
Part number LD800HSE 3BDH000320R0101 Applicable pipe is imported, weight 1.6kg can be sold nationwide
ABB LD800HSE module 3BDH000320R0101 is used to install HSE connectors on 4H1DIN rail
When the speed is 50Hz, the output voltage of the inverter is 380V and the current is 30A. At this time, if the output frequency is increased to 60Hz, the maximum output voltage and current of the inverter can only be 380V/30A, and the output power is obviously unchanged. So we call it constant power speed regulation.
What about the torque? Because P=wT (w: angular velocity, T: torque). Since P does not change and w increases, the torque will decrease accordingly.
We can also look at it from another Angle: the stator voltage of the motor U = E + I*R (I is the current, R is the electronic resistance, E is the induced potential) it can be seen that when U and I are unchanged, E is also unchanged. And E = k*f*X, (k: constant, f: frequency, X: flux), so when f is 50 – >60Hz, X will decrease accordingly
For a motor, T=K*I*X (K: constant, I: current, X: magnetic flux), so the torque T will decrease as the magnetic flux X decreases. At the same time, when it is less than 50Hz, because I*R is very small, when U/f=E/f is constant, the flux (X) is constant, and the torque T is proportional to the current. This is why the overcurrent capacity of the inverter is usually used to describe its overload (torque) capacity. And called constant torque speed regulation (rated current unchanged – > maximum torque unchanged)
Conclusion: When the output frequency of the inverter is increased from 50Hz, the output torque of the motor will decrease.
5. Other factors related to output torque
The heat and heat dissipation capacity determines the output current capacity of the inverter, thus affecting the output torque capacity of the inverter.
Carrier frequency: The rated current of the general inverter is the highest carrier frequency and the highest ambient temperature to ensure continuous output. If the carrier frequency is reduced, the current of the motor will not be affected, but the heating of the components will be reduced.
Ambient temperature: It is like not increasing the inverter protection current value because the surrounding temperature is detected to be low.
Altitude: The increase of altitude has an impact on heat dissipation and insulation performance. Generally, less than 1000m can not be considered. Above every 1000 meters drop volume 5% is OK.
LD800HSE 3BDH000320R0101 inverter is mainly composed of rectifier (AC to DC), filter, rectifying (DC to AC), brake unit, drive unit, detection unit, micro processing unit, etc.
The motor referred to in this paper is an induction type AC motor, and most of the motors used in industry are of this type. The rotation speed of the induction AC motor (hereafter referred to as the motor) is approximately determined by the number of poles and frequency of the motor. The number of poles of the motor is fixed by the working principle of the motor. Since the pole value is not a continuous value (a multiple of 2, for example, the pole number is 2, 4, 6), it is generally not appropriate to adjust the speed of the motor by changing the value.
In addition, the frequency can be adjusted outside the motor and then supplied to the motor, so that the rotation speed of the motor can be freely controlled.
Therefore, the frequency converter for the purpose of controlling frequency is the preferred equipment for motor speed regulation equipment.
ABB LD800HSE module 3BDH000320R0101 is used to install HSE connectors on 4H1DIN rail
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