ABB Original High Low Voltage AC Motor

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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:How large AC contactor and thermal relay should be used for the motor of 3KW? There are steps to calculate better.
1, rated current = power *2, or 6A2, the selection of AC contactor, the current domestic > = rated current, usually for a minimum of 9A. The reason is why recommend you go with CJX1 0922 or CJX2 0911 9A.3 、 thermal relay is usually a current range, rated current included in the range, preferably near the middle, which is ideal.Selection of domestic products, circuit breakers, contactors and other appropriate amplification, because the quality is not reassuring.
Q:Why do motors need capacitance when they start?
Only single-phase AC motors use capacitor, DC motor and three-phase AC motor are not needed.The two phase motor coil can not generate a rotating magnetic field, which must be in a coil on series capacitor, the current current branch ahead of another coil, in order to form a rotating magnetic field between the two coils, the rotation of the rotor.
Q:Please exchange the motor. Is it possible to adjust the speed with a governor?
At present, the most preferential speed regulation mode is frequency converter with the best performance, while the output torque is constant at low speed.
Q:AC operation of AC motor control circuit must be used?
In addition, alternating current is a sinusoidal current, not a sudden change in the approach. It's a little bit of gradual change. So the magnetic field is also gradual. There is no magnet in the alternating current motor but an iron core. The iron core induces an electric current in the gradual magnetic field, and the magnetic field of the current must cause it to rotate normally, and of course it also changes. That is to say, what you mean is that the frequency is constant, but the external magnetic field is constant, but the induced magnetic field is related to the rotation speed. The motors that can change speed change by changing the number of electrodes. Such as: the original current one cycle outside the gradient magnetic field for a week, now two cycles outside the gradient magnetic field for a week, not half of it?!
Q:How can I change the alternating current welding machine into a DC welder?
This is: ZXG series silicon rectifier (dead silicon) arc welding machine, AC arc welding machine itself power factor is lower, plus rectifier loss will be lower. The power consumption is too large and uneconomical. It has belonged to the sort of our welder.
Q:Who knows the main difference between DC motor and AC motor, I hope to say a little more simple, thank you
As the name suggests, the direct current motor uses DC as the power supply. AC motors use alternating current as power source.Structurally, the principle of the direct current motor is relatively simple, but the structure is complex, and it is not easy to maintain. The principle of AC motor is complex, but the structure is relatively simple, and it is easier to maintain than the direct current motor.
Q:AC motor stator winding does not turn, why the back EMF?
Back EMF is the electromotive force in the opposite direction of the electromotive force of the power supply. EMF may occur when there are multiple power supplies in the circuit. For example, the two metal bars on the same rail circuit cut the magnetic field at different speeds, and there may be a counter electromotive force; the electromotive force and the induced electromotive force exist simultaneously, and the back EMF may occur. For the coil, when the current of the winding changes, both ends of the coil will generate back electromotive force. For example, in the LC oscillating circuit, the change of the voltage at the two ends of the inductance coil is closely related to the counter electromotive force. When the motor coil turns, the back EMF is also generated.
Q:How to distinguish AC and DC machines
With the same power, the same speed (must be the same speed) compared with DC motor and AC motor, DC motor of the expensive price point, mainly because of its complicated structure must have the commutator to achieve AC-DC conversion.
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:What are the advantages and disadvantages of AC and DC motors?
The DC motor is easier to control than the AC motor. It can be applied to a wide range of speed regulation. It can be used in power braking, but it is more complex and more complicated than the maintenance of AC motors.

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