Siemens 1LA8 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 DC motor and an AC motor?
Alternating current motors are divided into stator windings and rotor conductors. The rotor conductor is shaped like a silicon steel sheet between a cage and a conductor. Some of the AC motors also have windings
Q:Can the voltage regulating module be used as AC motor speed regulation?
Want to control motor speed, only changing voltage frequency on the stator can (with more of a V/F control, change the frequency corresponding to the change of voltage amplitude), change the voltage regulator will not only change the frequency, voltage, it will only change the motor torque (the size of the voltage will not change, otherwise it will cause the stator coil current is too large; for example, if you burn the motor) with voltage regulator voltage applied to the motor will change the speed two times, will have little change but far less than the two times. When using the voltage regulator experiment, do pay attention to the rated voltage of the motor, otherwise it may cause permanent damage to the motor!
Q:What's the difference between an AC motor and a direct current motor?
Alternating current dynamo:1. AC motor with frequency device, there is a wrong display window, will automatically detect the fault and display the corresponding code, what problems will be clear2. compared with the DC motor, the output power of the same number of AC motor will be greater than the DC motor3. AC motors do not have carbon brush, so they will not produce DC motor those disadvantages
Q:What's the difference between asynchronous and synchronous AC motors?
The induction motor is realized by induction. The principle is that in the stator winding with three-phase voltage, will form a rotating magnetic field, the rotor on the lead because of cutting lines of force, so the potential, and because the guide bar is connected, so produce the current. At this point, we think of what we learned in junior high school -- "electrified conductors produce motion in a magnetic field."". So this kind of motor is called induction motor". For asynchronous or induction machines, the number of poles of the rotor is automatically induced by the number of poles of the stator. It can also be said that the rotor is not polar. (above is an example of armature winding on the stator). There is no pivot / transition for asynchronous motors.
Q:What about a single phase AC motor reversing?
Landlord is not the end of the motor cover installed, or change the end of the motor cover, or change the location of secondary winding joints, you can achieve the steering transform
Q:How to change AC motor to generator?
Three large capacity oil immersed capacitors are added between the items, which generate voltage with the residual magnetism of the motor, but there is no good power factor
Q:What's the difference between a three-phase asynchronous motor and an ordinary one?
Ordinary motor motor and variable frequency motor of variable frequency motor, it is called the main appearance is different from the ordinary motor frequency conversion motor with forced cooling centrifugal fan, which ensures good motor cooling in low frequency and high frequency, frequency range also see nameplate motor internal structure can adapt to the specific operation of high frequency operation. Ordinary motors are generally allowed to operate under or less than 50hz.
Q:Are there 3 harmonics in the voltage of a three-phase alternator? Why?
If the generator is delta connected, there is no 3 harmonic in its no-load voltage;
Q:What are DC and AC servo motors? What are the characteristics?
A rotating motor with input or output as direct current energy. Simulation of speed control system it is generally consists of 2 closed loop, both speed loop and current loop, which enables the two to coordinate each other, play the role of the 2 regulators in the system set up, adjust the speed and current respectively. The 2 feedback closed loop adopts the nested structure of one ring and one ring in structure, which is called double closed loop speed regulating system. It has the advantages of fast dynamic response and strong anti-interference ability, so it has been widely applied. PI or PID circuit is usually composed of analog operational amplifier, and the signal conditioning is mainly to filter and amplify the feedback signal. Considering the mathematical model of DC motor speed control system, simulation of dynamic transfer function in the debugging process simulation of speed control system, because the parameters of the motor or load the mechanical characteristics and the theoretical value is different, often require frequent replacement of R, C and other components to change the circuit parameters, dynamic performance index to obtain the expected, do it is very troublesome, if the use of programmable analog components regulator circuit, system parameters such as gain, bandwidth and circuit structure can be modified by the software, it is very convenient for debugging.
Q:How much does 15kw power AC power consume per hour?
KW 1 hours of electricity is common sense, but there is a problem of motor efficiency and power, that is to say the motor to reach the rated value at full load working condition, if it is light load or no load may not every KW of electricity, if overloading or frequent start maybe more electricity. For reference only!

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