TECO AC Motor High Voltage

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Brand Name:TECOModel 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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Q:motor v/s generator?
AC Motor converting Electrical Energy in to Mechanical Energy. But Generator Convert Mechanical Energy in Electrical Energy.
Q:will a magnectic field affect an ac motor.? what about a dc motor.?
I follow Big's logic, but I don't agree...for several reasons 1..every motor is operating in a magnetic field right now...earths'. 2. every motor in a plant--power plant, production line, whatever--is operating right now in the additional magnetic field of the motors next to them in the plant. 3. A constant magnetic field might 'twist' the produced field in the motor, but shouldn't have a big effect on the motor itself. Now, a _changing_ magnetic field , a strong one, in the area of the motor might have an effect. This by itself is an interesting question that would make a good project, and it's something that is testable.
Q:why is it better to use a DC motor rather than a AC motor?
It takes less electronic parts to control a DC motor than an AC motor. Also DC motors have higher RPM's than AC motors. The rpm of a AC motor is depended on the frequency of the voltage and the number of poles. The rpm of a DC motor is depended on the current and voltage applied to it.
Q:Can the speed of a 110volt motor , be changed without the use of a gear box?
There is two ways of changing the speed of an AC motor. The first is a gear box, which you stated you don't want to deal with. The other, and also expensive, is a frequency drive. This actually changes the incoming AC into DC then back to a AC that can be changed in frequency. This set up is used a lot in commercial AC applications.
Q:Heater &AC blower motor will not work in 2000grandam se? Already replaced blower and resistor.Still nothing?
Check the fan switch, it may be shot.
Q:what happen if direct current is supplied to ac motor?also...?
i think motor will burn out
Q:AC induction motor.... possible to have an odd number of poles?
Poles have to be in pairs. One is positive while the other is negative. Its actually better to use pole pairs in calculations and the way you will see it in many text books etc. but for some reason manufacturers like to state the number in poles.
Q:Which motor is one with a variable speed from 0 - 2000 rpm?
I prefer a DC motor. A rheostat can be used to control voltage/RPM speed and DC motors are more reliable.
Q:Where can I find advice on troubleshooting ac induction motors?
Yes the capacitor could be faulty or the centrifugal switch or a bad winding or connection. The switch being easy to test as it should be made with the motor stopped. The capacitor probably best to check by changing it. You can do a rough check on the windings with an ohm meter but this may not tell you if an internal fault is shorting some of the windings but if its not the switch or capacitor then the thing's probably junk anyway. You think the load is the same but this is a big motor for single phase and compressors are hard to start so you need to be sure. Single phase motors can be a ***** when they don't work so good luck.
Q:Is it possible to use a 50 Hz motor to a 60 Hz power supply without using any frequency converter?
It is possible to use if the load is light. Only thing that changes is speed of motor, instead of 1500, it will be 1800. Hence mechanical friction is slightly more, but a good motor must be able to withstand it. However if you load it up to say70% then that should be compensated

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