ABB AC Motor High Low Voltage QABP Series

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Q:What's the difference between an AC motor and a direct current motor?
The difference between AC motor with DC motor is simple and there is no difference between the brush DC motor, AC motor and the brush is no, one more than the DC inverter, DC motor brush, low noise, energy saving. The AC motor because of the frequency converter noise is relatively large, power consumption is also slightly larger. In short, each has its own advantages, according to their own use of ways to solve which to use!
Q:What's the difference between a three-phase AC motor and a two-phase one?
A three-phase induction motor consists of a stator and a rotor. Its stator winding is a three-phase symmetrical winding with symmetrical power supply. A two-phase motor is used to specify a motor with a 2 phase winding. Two-phase motor is divided into two categories: drive and servo. The Dan Xiang asynchronous motor used in most household appliances and small appliances belongs to two phase drive motors. Two phase servo motor for control, the stator's two phase windings are exciting windings and control windings respectively, with a space difference of 90 degrees of electric angle.
Q:What is the principle of the single-phase AC motor in the washing machine?
Single-phase AC motor principle: with single-phase capacitor type motor: single-phase motor has two windings, namely starting winding and running winding. The two windings are 90 degrees apart in space. A capacitor with large capacity is connected in series on the starting windingWhen the running winding and the starting winding pass through the single-phase alternating current, the current in the starting winding is 90 times higher than the current of the running winding in time by the action of the capacitor, and the maximum value is reached first. Two of the same pulse magnetic field is formed in time and space, so that a rotating magnetic field produces the air gap between the stator and the rotor, the rotating magnetic field, the induced current in the rotor current, and rotating magnetic field interact to produce electromagnetic torque, the motor rotation.
Q:Why can single-phase AC motors be controlled by voltage?
The low voltage is not equivalent to reducing the torque well, the slip is not big, the speed is not low, I understand it
Q:How to make the AC motor stop rotating rapidly?
A, electromagnetic brake.Two, use YEJ motor with brake itself, it also and ordinary Y series three motor mounting dimensions are exactly the same, but with a little bit length.
Q:Comparison of AC motor and direct current motor
Disadvantages of DC motor1. direct current motor manufacturing is more expensive2. carbon brush
Q:What is the size of DC motor and AC motor under the same power?
In general, the DC motor is large in size, but it depends on whether the supply voltage of the two motor is the same.
Q:Is DC motor energy saving or AC current?
DC speed control, that is, the alternating current into DC, the use of thyristor conduction angle to adjust, you want to, ah, SCR no loss? Of course, there is no small. Now many places use frequency control, why? Energy saving chant. You should know, now the good air conditioning, frequency conversion technology, frequency conversion is the most energy-efficient, or else enterprises will not invest so much money, research inverter technology.
Q:Causes of insulation breakdown in AC motor voltage withstand test
Not in accordance with the provisions of pressure, or pressure, the motor damp, without drying and so on.
Q:How do I know whether the motor is a direct current motor or an AC motor?
Look at the nameplate, such as AC 220, V is AC motor, DC 220 V is DC motor!

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