ABB AC Motor High Voltage HXR500

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Q:What is the low power factor of AC motor in no-load operation?
First, if it is a single-phase motor, its power factor is equal to the three-phase, then it is low, in this case, the load is unbalanced
Q:Which is better, alternating current tubular motor and direct current tubular motor?
The alternator is concerned, it can realize the direct energy feedback to the grid (but must ensure 4 conditions: the same voltage amplitude, phase and phase sequence of the same, the same frequency); but the DC generator power is required to process the alternating current into the inverter (DC said rectifier, the DC the process that converts the AC inverter), to feedback to the grid. So it also needs to increase the power of the inverter.
Q:How many kW or more AC Motors should be started with the starter?
If only the General Motors (not including power plants, industrial production, motor) can refer to: civil, public and residential power grid direct power transformer power supply two, the former allows direct start for 11KW, which is 15KW
Q:What's the meaning of the center height of the three-phase AC motor?
Center height refers to the motor shaft to the base bottom surface height.
Q:Motor PWM how to speed?
This question is not clearly stated in this space. To be brief, AC motor speed control has PWM drive mode of AC motor, DC motor speed control has PWM drive mode of DC motor.
Q:Does the DC motor work the same as the AC motor?
AC motor without carbon brush and commutator, maintenance free, strong and wide application, but the characteristics to achieve performance equivalent to DC motor to be used to achieve complex control technology. AC motor is divided into two categories: asynchronous motor and synchronous motor. Asynchronous motor is divided into single-phase asynchronous motor, two-phase asynchronous motor and three-phase asynchronous motor according to the number of stator phases. The three-phase asynchronous motor is simple in structure, reliable in operation and low in cost.
Q:The difference between a DC motor and an AC motor for a garbage collector
Germany laolunshi food waste processor motor is AC motor. It is dedicated to food waste disposal, LKMS stainless steel motor, never rust, permanent quality. Low operating noise. Oilless bearings, maintenance free for life
Q:For AC motors, when the voltage is constant, the frequency of the voltage becomes higher or lower, so what is the impact on the motor?.
Induction motor, power frequency rise will make the speed increases, the rise of the motor inductance frequency increase, the current will be reduced, reducing the temperature rise of the motor current will decline.When the power supply frequency decreased, motor speed will decline, the current decline due to the increased motor inductance, the temperature should be increased.
Q:What is brushless motor, no and brush what is the difference?
The difference between a brush motor and a brushless motor is whether it is equipped with a conventional brush commutator. The commutation of the brush DC motor is always achieved by touching the graphite brush with the ring commutator mounted on the rotor.The brushless motor will feedback the rotor position back to the control circuit through the Holzer sensor, so that it can learn the accurate time of the motor phase commutation. Most brushless motor manufacturers produce motors with three Holzer effect positioning sensors. Since brushless motor has no brush, it has no relevant interface, so it is cleaner and less noisy. In fact, it needs no maintenance and longer service life.
Q:What are the similarities and differences between brushless DC motor and AC brushless motor?
The so-called brushless, no brush, is not to rely on this kind of motor brush armature current to change the polarity, and generally by the position detection device, such as Holzer, such as photoelectric encoder position detection, and then according to a control method, according to the polarity of the armature current change of position signal.

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