Siemens High Low Voltage AC Motor

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part namebrandmodelVoltageprotectioncooling
motorSiemens1LA81PQ8400V,690V,2.3KV,4.16KV,6KVIP55IC411 (1LA8,1LA4)
IC416 (1PQ8,1PQ4)

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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:Panasonic servo motor A4 series, AC synchronous motor or AC asynchronous motor?
Induction motors are also called induction motors. The electromagnetic fields on the rotor are induced by the stator magnetic field. The rotor of the synchronous motor must have its own magnetic field. The speed of the asynchronous motor varies slightly with the load, and this speed is lower than the speed of the stator magnetic field, so it is called asynchronous motor. The speed of the synchronous motor is strictly rotating according to the magnetic field speed of the stator, so it is called synchronous motor. Asynchronous motors can be activated directly. The synchronous motor needs a special starting device or starting winding, so the manufacturing process is complex and the cost is high. Asynchronous motors are generally used as motors. Synchronous motors are generally used as generators and as compensation machines.The first point is that asynchronous motors are for motors only, and are rarely used as generators. Synchronous motors are used to generate electricity. The principle of asynchronous motor is mainly in the stator through the 3 cross flow, so that it produces a rotating magnetic field, the speed is N0, that is synchronous speed. Different poles of the logarithm P, at the same frequency of f=50Hz alternating current, will produce different N0, n0=60f/p. The working principle is as follows: 3 phase symmetrical windings symmetrical 3 phase current to produce a rotating magnetic field, the magnetic field line cutting rotor windings, according to the principle of electromagnetic induction, the production of E and I in the rotor winding, rotor winding by electromagnetic force in a magnetic field, the electromagnetic torque, the rotor rotation, the rotor output mechanical energy. Driven by mechanical load rotation.
Q:What's the difference between a DC motor and an AC motor?
A direct current motor is a magnetic field that does not move; a conductor moves in a magnetic field; an alternating current motor rotates in a magnetic field, and the conductor does not moveDC motor consists of stator winding and rotor winding of stator winding. The magnetic field is produced. When the direct current. The stator windings produce fixed polarity magnetic field. The rotor energizing force in the magnetic field. So the rotor in the magnetic field force is rotating. The DC motor structure is complicated. The cost is high.
Q:How to distinguish between DC motor and AC motor?
The difference between DC motor and AC motor is, of course, the different types of drive power, one is DC, one is communication.
Q:How many kinds of braking modes are there in AC motors? What are the characteristics of each?
Reverse brakingWhen the motor cuts off the normal power supply, the power phase sequence of the motor stator winding is changed so that a reverse braking torque is generated
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?.
The rise of the motor inductance frequency increases, suitable for high voltage, if the voltage at constant current is reduced; decrease of the power supply frequency of the motor inductance decreases for low voltage, current increases if the voltage is constant, and there may be magnetic saturation and heat and even burn.
Q:How to control the speed of AC motor
How is the motor controlled?:Motor control refers to the motor start, acceleration, operation, deceleration and stop control. Depending on the type of motor and the use of the motor, there are different requirements and purposes. The motor is controlled by motor to achieve the goal of quick start, quick response, high efficiency, high torque output and high overload capacity.
Q:Working principle of AC motor
Therefore, as long as the electromagnetic force direction, the motor will rotate continuously. This is the application of AC motor. The AC motor consists of stator and rotor, you said in the model, the stator is electromagnet, rotor stator and rotor coil is. While using the same power source, so the current in the stator and rotor the direction of change is always synchronized, i.e. the current direction in the coil is changed, and the direction of the current in the electromagnet, according to the left-hand rule coil magnetic force direction, coil can continue to turn down.
Q:Alternating current motor commutation
A sinusoidal voltage with a lead of 90 degrees or a phase of 90 degrees after a large capacitor is generatedAnd the original voltage can form a set of voltage difference of 90 degrees phase,.2 group voltage together can control its directionIf it's 90 degrees ahead, it's turning right. Then it will be reversed after 90 degrees
Q:How to realize constant power or constant torque output of three-phase AC motor?
Compared with the single-phase asynchronous motor, the three-phase asynchronous motor has good performance and saves various materials. According to the structure of the rotor, the three-phase asynchronous motor can be divided into two kinds of cage and winding. The squirrel cage rotor asynchronous motor is widely used because of its simple structure, reliable operation, light weight and cheap price. Its main disadvantage is the difficulty of speed regulation. Winding three-phase asynchronous motor rotor and stator is also provided with three-phase winding, and through the slip ring, brush and external rheostat connection. Adjusting rheostat resistance can improve the starting performance of motor and adjust the speed of motor.

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