ABB Low Voltage AC Motor QABP

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Q:Why should a single-phase AC motor start with a capacitor?
The running winding of a single-phase motor can only produce pulsating magnetic field - the electromagnetic field corresponding to any point of the motor stator, which can only be changed at this point, including polarity, direction and amplitude. That is, a rotating magnetic field cannot be formed.
Q:How to synchronize two ordinary AC motors?
The motor does not need to be synchronized. As long as the same type of motor on the line, the two sides automatically run at the same time into the synchronous state. As long as the load on both sides of the motor is not the same. When a motor is switched a little faster, the load of the motor is increased, the speed of the motor is slowed down automatically, the load of the other motor is reduced, and the speed of the motor is increased naturally.
Q:What is the maximum speed of a three-phase AC motor?
The maximum speed of the three-phase AC motor is determined by the power supply frequency and the number of poles of the motor. The maximum synchronous speed is =60*, frequency (50) / magnetic pole number (1), =3000 rpm, and the asynchronous speed is about more than 2900 revolutions per minute.
Q:Working principle of AC motor
The principle of AC motor, electric coil in the magnetic field rotation. You know the principle of DC motor, DC motor? Is utilized to automatically change the direction of the current in the coil commutator, so the coil stress direction consistent and continuous rotation.
Q:Who knows the main difference between DC motor and AC motor, I hope to say a little more simple, thank you
As the name suggests, the direct current motor uses DC as the power supply. AC motors use alternating current as power source.Structurally, the principle of the direct current motor is relatively simple, but the structure is complex, and it is not easy to maintain. The principle of AC motor is complex, but the structure is relatively simple, and it is easier to maintain than the direct current motor.
Q:How do AC motors keep in the same direction?
Because the working principle of AC motor stator is formed in a rotating magnetic field, then the rotor itself is a closed loop (induction motor) or a magnet (synchronous motor), the rotor rotation direction of magnetic field and steering only related to the rotation direction of magnetic field has not changed, turn to constant.
Q:Why is an AC motor more popular than a direct current motor? System description, thank you.
When it comes to the DC to AC by rectifying and filtering can be compared to DC, DC motor and AC motor, DC motor, high cost, complex loss, ratio of AC motor high failure rate, high cost, low penetration rate, while the AC motor can be positive, but not DC motor. It is the alternating current AC generator produces alternating current AC motor drives the rotation, so
Q:Is the 380V single-phase AC motor the same as that of the 220V AC motor?
Dissimilarity。 220V is followed by a line of fire, a zero line. 380V's got two fire lines.
Q:What is AC motor?
The torque of the single-phase motor is pulsating, and the noise is relatively large, but the required power supply is relatively simple, especially in the family. Therefore, small household motor and instrument motors are mostly single-phase motors.
Q:Why is the AC motor connected to the capacitor?
AC motor to connect the capacitor, in brief, the capacitor is to produce a phase difference, and let the motor magnetic field "asynchronous", the motor will rotate.

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