ABB Low Voltage AC Motor High

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Brand Name:ABBModel Number:HXR 560 SeriesType:Squirrel Cage Motor
Frequency:62.2 HzOutput Power:750 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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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:What's the difference between a three-phase AC motor and a two-phase one?
The three-phase power is generally 380 pay, have four lines, of which three is the root of a FireWire, zero line; 380 volts of electricity is used as power industry; two-phase power is generally 220 volts, two lines, one of which is a FireWire, zero line is.220 volts of electricity is as electricity, or small machinery and electricity.
Q:The working principle of AC motor!
The single-phase AC motor has only one winding, and the rotor is squirrel cage. When a single-phase sinusoidal current through the stator windings, the motor generates an alternating magnetic field, the magnetic field strength and direction for sinusoidal variation with time, but the spatial position is fixed, so it is also called the magnetic field is alternating pulsating magnetic field. The alternating pulsating magnetic field can be divided into two with the same speed, the rotation direction of the rotating magnetic field are on the contrary, when the rotor is at rest, the two rotating magnetic field generating torque of two equal and opposite in the rotor, the synthetic torque is zero, so the motor rotation. When we use a force of the motor rotation to one direction (e.g., clockwise), the rotor and the clockwise rotation direction of the rotating magnetic field between the motion of cutting magnetic lines becomes smaller; the rotor and the counterclockwise rotation direction of the rotating magnetic field between the motion of cutting magnetic lines becomes large. Thus, the balance is broken, and the total electromagnetic torque generated by the rotor will no longer be zero, and the rotor will rotate in the direction of the push.
Q:How to distinguish between DC motor and AC motor?
The stator of a direct current motor is a fixed magnetic field, and the direct current changes through the brush of the rotor to form a magnetic field around it, thereby rotating in the stator. In industrial enterprises, due to relatively reliable DC power supply, DC motor is generally used to require reliable operation of mechanical or mechanical spare security; and because the DC motor with variable speed input voltage can also change, so often need to control local DC motor are many, such as cars, electric locomotive and so on.
Q:What are the direct and alternating current motors used in daily life?
The plug-in fan is one of the AC, DC, and the battery is DC
Q:Speed control method of AC motor
The specific AC speed regulating device has:Efficient speed regulation includes:Changing pole logarithmic speed regulation -- squirrel cage motorSquirrel cage type motor controlled by frequency conversionCascade speed control - winding motorSynchronous motor of commutator motorInefficient speed control methods include:Stator voltage regulating speed governing squirrel cage motorSpeed control of electromagnetic slip clutch -- squirrel cage motorSpeed control of rotor series resistance winding motor
Q:What's the difference between asynchronous and synchronous AC motors?
Asynchronous motors and synchronous machines actually have a big difference in principle:The synchronous motor works by "the magnetic field always goes along the shortest direction of the magnetic circuit", taking the transition motor as an example. When there is excitation on the rotor, the N and S poles appear; then the stator magnetic field rotates, and its N and S poles change with each other, and always correspond to the magnetic poles of the rotor. So synchronization is formed. What's more, the number of poles of the stator and rotor must be the same, otherwise the motor will not work.
Q:DC motor speed control performance is very good, why do we need AC motor?
AC motor: a machine used to convert mechanical energy and alternating current energy. AC motor has become the most common motor because of the great development of AC power system. Compared to the AC motor and DC motor, because there is no commutator (see DC motor commutation), therefore has the advantages of simple structure, convenient manufacture, relatively strong, easy to make high speed motor, high voltage, high current, large capacity. The coverage of AC motor power greatly, from a few watts to several 101000 watts, even millions of kilowatts.
Q:How to distinguish AC and DC machines
This also increases the manufacturing cost of DC motors to a certain extent. The alternator is concerned, it can realize direct energy feedback to the grid (but must ensure 4 conditions: the same voltage amplitude, phase and phase sequence of the same, the same frequency); but DC generator power needs to convert AC inverter (DC rectification process called, the direct current into alternating current the process that the inverter can be feedback to the power grid). So it also needs to increase the power of the inverter.
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.

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