Siemens High Low Voltage AC Motor

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Siemens High Low Voltage AC Motor

Q: noticed this morning central ac unit the motor seized up the fan does not run. What can I do to loosen up the motor it myself. I can not afford to have someone come out and check it on fixed income.: This is not a cost-saving moment. The motor has badly overheated, This was likely caused bty bearing problems, but it does not really matter bacaue you cannot repair it and continuing to try will increase risk of fire. One option only: replace it. If it is a belt-drive unit, you may be able to do it yourself. If it is integrated, professional service isrecommended.

Q: The difference between induction motor and induction motor: Three phase asynchronous motor as three-phase motor for motor operation. Three phase asynchronous motor rotor speed below the speed of a rotating magnetic field, the rotor winding magnetic field between the relative motion and the induced electromotive force and current, and electromagnetic torque and magnetic field interaction, realize the energy transformation. Compared with the single-phase asynchronous motor, the three-phase asynchronous motor has good performance and saves various materials. According to the structure of the rotor, the three-phase asynchronous motor can be divided into two kinds of cage and winding. The squirrel cage rotor asynchronous motor is widely used because of its simple structure, reliable operation, light weight and cheap price. Its main disadvantage is the difficulty of speed regulation. Winding three-phase asynchronous motor rotor and stator is also provided with three-phase winding, and through the slip ring, brush and external rheostat connection. Adjusting rheostat resistance can improve the starting performance of motor and adjust the speed of motor

Q: Boyfriend is trying to repair our window AC unit. He says the problem is the fan motor (not the compressor, etc). It'll run and cool the room for a little while (20-30 minutes maybe) and then it will die. We can wait and turn it back on, but it always dies after a little while. What exactly could be wrong with the fan motor?: The most likely cause is overheating which causes the internal overload of the motor to open. This could be because the bearings are worn and seizing or it could be because of a problem with the incoming power. If the voltage is lower than normal, the motor will draw more current (amperes) than it is designed for which creates more heat than the motor can operate with. Check the voltage source. If the voltage is okay, check to see if you have oil ports on the motor for the bearings. A few drops of machine grade oil can be applied. The bearing may be too worn, in which case the motor will need to be replaced. The motor may also have a bad start winding. Normally, a motor will not have enough torque to rotate correctly without a good start winding. It will still attempt to rotate on just the run winding, but it will draw more current and that will overheat the motor. Depends on the type of motor.

Q: I can find plenty of stuff online about electric motor assembly, but I want to know how the parts are actually made and what they are usually made from. It's for a report for college so quite urgent. I'm assuming they're cast somehow or something. All help appreciated!: They are made in factories designed for that purpose. The parts are things like laminated steel, enameled copper wire, commutators, brushes, shafts (steel), springs, cast iron cases, bearings. All are made separately, and the description of how each are made would take a book. Try looking each up on the internet. And the parts and processes can vary a lot with the size and type of motor.

Q: What are the reasons for initial inrush curent at start of an AC motor?: The coils of an electric motor have inductive reactance but very little resistance. The coils initially act similar to a short circuit when the switch is closed and the motor shaft is stationary. Once the motor begins to rotate, the motor develops back EMF (voltage in reverse polarity to source voltage) which counters the source voltage, reducing the effective voltage across the motor coils, and reduces current flow. Back EMF is highest in a motor that is at full operating speed and under no mechanical load. When the motor is under mechanical load, back EMF is reduced until the motor is under full load, increasing the current to full load rating.

Q: i need to know this b/c im having a test on it so someone please help me out so i can understand it better: A permanent split capacitor (psc) motor is a single phase AC motor that has a capacitor that provides a phase shift for the current in the auxiliary windings. The capacitor and the auxiliary winding are connected all of the time and not just while the motor is accelerating to speed when starting. The blower in an HVAC air handling unit has a low starting torque requirement and increasing torque proportional to the square of speed as it accelerates. That means that a psc motor, can be designed to provide optimum performance at full speed and still start adequately. The psc motor is less complex, less expensive, more efficient, more reliable and quieter than a capacitor start motor.

Q: What cable is used to connect 3 phase Ac motor to Variable drive?: Various okorder /

Q: AC speed regulation motor + turbo reducer instead of cam cutter + AC motor?: The main error in cam dividers is that:1, because of the impact of inertia, resulting in errors caused by elastic deformation2., because of inertia lead to overshoot error3, cam gap caused by machining gap error

Q: solenoids?: Low Power Factor is due to inductive loads. AC has compressor motor fan motor which are inductive loads. Similarly AC solenoids are inductive coils. Hence to correct PF of AC or solenoids, a suitable capacitor may be connected. Ketan K

Q: fan motor on our ac central unit went out we replaced it but now it wont throw cold air and seems as it wants to cut of or pick up speed .what could it be..: Either your replacement fain is broken, you replaced it with the wrong fan or you hooked it up wrong.

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