Siemens High Efficient 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:The difference between a variable frequency motor and an ordinary AC motor
Variable frequency motor in the speed range of speed can be arbitrary, and the motor will not be damaged, the most general domestic general motors can only run on AC380V/50HZ under the condition of ordinary motor can reduce the frequency or frequency range, but can not be too large, otherwise the motor will heat and even burn.
Q:Can the voltage regulating module be used as AC motor speed regulation?
Ordinary three-phase AC motor (commonly used three-phase AC asynchronous motor) is the stator winding into three-phase alternating current, resulting in a rotating magnetic field (the rotation of the magnetic field speed n=60f/p, also known as synchronous speed). The rotating magnetic field is relative to the rotor winding (usually the squirrel cage winding), and the rotor winding induces the rotor induced current due to the electromagnetic induction principle. The rotor current produces a tangential torque under the influence of the magnetic field, so the rotor spins.
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: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 change the speed of the motor?
Three phase asynchronous motor speed formula is: n=60f/p (1-s) 1, do not change the synchronous speed control method. Winding motor speed control, chopper speed regulation, cascade speed regulation, and application of electromagnetic slip clutch, hydraulic coupling, oil film clutch and so on. 2. Change the speed regulation method of synchronous speed. Change the stator pole count of multi speed motor, change the stator voltage and frequency variable frequency speed regulation, there can be no commutation motor speed regulation, etc..
Q:AC motor control chip
This motor is single-phase or three-phase, ah, second power, how big, these need to know.If it is a small single-phase or three-phase motor, AC motor can be controlled by solid-state relay or by small AC contactor control relay, if it is large, it is best to use the second scheme just said. It is so simple. What if there are special requirements that is another, I can talk.
Q:What is the neutral point of an alternating current motor? How to determine whether the neutral point leads to?
The AC motor only meets the three-phase fire line, the three-phase is balanced, the neutral point does not connect the zero line, also does not have the ground.
Q:Why is Tesla's Model s electric vehicle using AC motor instead of the more popular frequency conversion DC motor?
The structure of DC motor is complex, the cost is relatively high, and later maintenance is troublesome. Larger motors require an external cooling fan. Can be very simple to realize the speed of the economy. Big torque and good mechanical characteristics. The AC motor has the advantages of simple structure, low cost and simple maintenance. You can't speed it yourself. In the past, the frequency conversion was not timely, and the DC motor was used in places requiring good speed control (machine tools, cranes, textiles, etc.). However, with the development of frequency conversion, the performance of vector frequency conversion + frequency conversion motor is close to that of DC motor.
Q:Comparison of AC motor and direct current motor
Disadvantages of DC motor1. direct current motor manufacturing is more expensive2. carbon brush
Q:Brushless DC motor is AC motor or DC motor, why?
The brushless DC motor and the traditional brush DC motor supply are DC, but only use the reversible drive circuit instead of the brush and commutator. The rotor is a magnetic pole, and the stator is an armature. The actuator turns the current in the stator windings, similar to AC induction motors.AC motor is AC power supply, the speed is related to the power supply frequency, asynchronous and synchronous.

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