ABB Original DC HIgh Efficiency Motor QABP Series

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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:Difference between AC and DC? No, not the band ...?
AC is alternating current, and DC is direct current. In a DC circuit, the voltage (and consequently current) remains constant. In an AC circuit, the voltage varies with time.
Q:What factors would you consider when replacing an AC Motor?
If you are replacing an AC Motor in an existing system, the primary factor would be, the reason why you want to replace an existing motor. Is the speed low? Is it noisy? Is it overheating? Is the efficiency low? Does it break down often? Or would you save more space by replacing a foot mounted motor by flange mounted motor? Or you just can't stand the look of it?! (asthetics) Once you identify the reason, go for a motor that addresses this problem keeping all other specficiations the same or slightly higher.
Q:New blower motor on 7900 coleman gas furance will not turn my fan unless i push the fan with my finger to ge?
I presume the motor is an AC motor. It almost certainly uses a start capacitor to provide the push you are giving it with your finger. The capacitor itself may be bad, but it is even more common to have a bad start contact in the control circuit. The capacitor is only connected long enough to get the rotation going. The first source should help.
Q:why ac synchronous superconducting motors are common, not induction superconducting motors?
Superconducting generators and motors are still under research and development.
Q:where can I find complete information on induction motor torque control methods,like v/f,DTC,FOC,vectorcontrol
V/f control is simply the control of the voltage and frequency applied to an AC motor such that the relationship between voltage and frequency is that the ratio of voltage to frequency is a constant. V/f control is often enhanced by adding “boost,” increasing the V/f ratio at the low end of the frequency range. V/f control would not be considered to be torque control although some protective torque limiting method is often included. Control methods that emulate the armature current regulation control strategy of a DC motor are called flux vector control, field orientation control, or direct torque control. These control strategies mathematically model the motor and estimate its performance by measuring the motor current and the instantaneous vector relationship between the applied voltage and the current. A motor shaft speed and position sensor may be used to determine the instantaneous rotor speed and position. Vector control systems are often called “sensorless vector” when a shaft speed and position sensor is not used. Vector control can provide torque control that allows a torque reference to be set and the delivered torque to be held at the set value with the motor being determined by the torque delivered and the characteristics of the load as long as the drive is within rated limits. The details of the control implementation are generally not fully disclosed by the manufacturers. Since drive performance is affected by the characteristics of the load, manufacturers do not generally provide specific performance information. However, there is a lot of application information available form drive manufacturers. Detailed technical papers are published by the IEEE, but it not always possible to determine which products, if any, implement techniques discussed in IEEE papers.
Q:What cause a Pool Pump Motor to hum?
Q:What can I do with an electric motor?
Well, if I were you, I wouldn't mess too much with it. What are electric motors generally used for? Hmm, maybe electric vehicles? Lightbulb! Drive an electric car, and decrease the amount of pollution. Great idea!
Q:can you run a european ac electric motor on usa power?
A 380 volt, 50 Hz motor will run quite well on 480 volts at 60 Hz. To operate a motor on a different voltage or frequency, the ratio of voltage to frequency (V/Hz) should be the same for the new power supply as it was for the original power supply. A motor rated 380V/50Hz is designed for 380/50 = 7.6 V/Hz. At 60 Hz, the voltage should be 7.6 X 60 = 456 volts. That is only 5% below the nominal 480 volt supply. That is within the normal range of expected supply voltage variation. The speed at 60 Hz will be 20% higher than the speed at 50 Hz if the load is a fan or centrifugal pump, the 20% speed increase will result in a 44% load torque increase. That could cause a problem with the load or the motor depending on the original load requirement. If the load torque does not increase, the increased speed could still cause problems with the load. The voltage tolerance of the motor insulation can be expected to withtand the voltage increase without any problem. Re Additional Details If your frequency drive is properly adjusted, there will be no extra voltage in the circuit. The drive regulates the output voltage so that it remains proportional to the output frequency. Excess voltage would be any voltage that exceeds the rated V/Hz of the motor. Excess voltage causes saturation. That is the magnetizing current increases above the current that magnetizes the magnetic core to the maximum extent possible. Low voltage is any voltage that is below the rated V/Hz. Low voltage results in the magnetic field not being strong enough for the motor to produce rated torque. That is a simplified explanation, but I think that it presents the basic idea.
Q:How to build an digital AC ammeter for 3 phase motor?
you may have already found what you were looking for on google by now, none the less I think I can help you. I do not have a circuit schematic but I worked on a similar project not too long ago. To monitor the current you can use 3 current transformers to clamp on the 3 phases. A current transformer is a transducer that will convert the current in the phase to a voltage output signal. The output signal will be low level AC so you will need to rectify and convert the signal to a steady DC signal. (this can be done very easily by using a single diode rectifier and a low pass filter, you may also require an amplifier) once all 3 current signals are converted to a steady DC voltage signal that is proportional to the line current, you run the signals into a PIC micro-controller and interface an LCD display to the micro-controller. You can then write simple code to convert the 3 analog input signals to the proper RMS current values and then output it to the LCD. Hope this helps.
Q:What are the applications of AC?
Most Appliances at home are designed to to take AC direct without rectification.

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