ABB AC DC HIgh Efficiency Motor HXR400

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Brand Name:ABBModel Number:HXR 400 SeriesType:Squirre Cage Motor
Frequency:50.2 HzOutput Power:350 KWProtect Feature:Explosion-proof
Phase:Three-phaseCertification:CEAC Voltage:690V
Place of Origin:Shanghai China (Mainland)Efficiency:IE 1Packaging Detail::EXPORT STANDAR WOODEN CASE
StructureAsynchronous MotorFunctionDriving UsageUniversal

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Specialized in Manufacturing and Supplying a wide range of Electric Motors since year 2002.

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Q:What is AC induction motor?
Because the induction motor in the stator coil to enter AC current, such as three-phase alternating current. The stator coil produces a magnetic field that rotates with the change of alternating current, which we call rotating magnetic fields.
Q:The difference between synchronous motor and asynchronous motor
Synchronous motor for motor operation. The synchronous motor can adjust the excitation current to make it run in the leading power factor, power factor, to improve the power grid so that large equipment, such as large air blower, water pump, compressor, ball mill, rolling mill, synchronous motor driver. This advantage is particularly pronounced when low-speed large equipment uses synchronous motors. In addition, the speed of the synchronous motor is entirely determined by the frequency of the power supply. When the frequency is constant, the speed of the motor is certain, and it does not change with the load. This characteristic is very important for some transmission systems, especially for multi machine synchronous drive system and precise speed regulation and speed stabilization system. The stability of synchronous motors is relatively high. The synchronous motor usually operates under the excitation state, and its overload capacity is greater than that of the corresponding asynchronous motor. The torque of an induction motor is proportional to the square of the voltage, while the torque of the synchronous motor is determined by the product of the electromotive force generated by the voltage and the excitation current of the motor, which is only proportional to the primary voltage of the motor. When the grid voltage suddenly drops to the rated value of 80% when the torque of asynchronous motor is decreased to about 64%, and stop with real load; and the torque of synchronous motor is not decline, but also through forced excitation to ensure stable operation of the motor.
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:Why are DC motors more powerful than AC motors of the same power?
Because the motor armature circuit resistance and inductance are small, and the rotating body has certain mechanical inertia, so when the motor is switched on, starting the beginning of the armature speed and anti electromotive force of the corresponding small starting current, large. Up to 15~20 times the rated current. This current will disturb the power grid, the unit will be subjected to mechanical shocks, and the commutator will spark. Therefore, the direct closing start is only applicable to motors with power not greater than 4 kW (starting current is 6~8 times the rated current).
Q:How does the PLC control the speed of the motor?
See what you choose the motor, the general AC motor does not need PLC, you can use the frequency converter speed, how much speed you can change the frequency of inverter output current. If it is a stepping motor or a private server, a drive is needed, and a PLC is used to send a pulse control drive to drive the motor. PLC each sends a pulse, the motor turns an angle.
Q:Winding of single-phase AC motor?
Depending on the type of motor, the range motor is the same as you say. Asynchronous motors are not like this.
Q:How to realize constant power or constant torque output of three-phase AC motor?
Is generally achieved through the frequency converter in the frequency power supply 50HZ, with inverter motor, the inverter output is below 50HZ, the motor is in constant torque output, but the inverter output is higher than 50HZ, the motor is of constant power output
Q:What are the advantages and disadvantages of AC and DC motors?
AC motor without carbon brush and commutator, maintenance free, strong and wide application, but the characteristics to achieve performance equivalent to DC motor to be used to achieve complex control technology. AC motor is divided into two categories: asynchronous motor and synchronous motor. Asynchronous motor is divided into single-phase asynchronous motor, two-phase asynchronous motor and three-phase asynchronous motor according to the number of stator phases. The three-phase asynchronous motor is simple in structure, reliable in operation and low in cost.
Q:The actual power consumed by a three-phase AC motor is equal to line voltage * line current. How do you explain that?
The calculation formula of three-phase symmetrical load; power line I U 3 P= V COS line with =3I2R.Line voltage refers to the parallel voltage between the two phase lines (A-B, A-C, B-C), and the phase voltage refers to the parallel voltage of the relative zero (A-0, B-0, C-0).In the three-phase four wire distribution system neutral directly grounding; line voltage is equal to the phase voltage of 3 V, the phase voltage is equal to 3 V / line voltage, line current is equal to phase.
Q:AC motor: use gear variable or frequency conversion?
Each has its advantages and disadvantages.The gear case, can only be very variable, only a few or dozens of fixed speed, cost, is not very high, but when the gear there is the problem of the transmission gear must be stopped, otherwise it will damage the gear structure. But one of the great advantages of gear reduction is that the power is small and the value is very small. Only mechanical structural friction losses. That is, great torque can be gained after slowing down.

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