Siemens 1LA8 High Low Voltage AC Motor

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Siemens 1LA8 High Low Voltage AC Motor

Q: Hi. I am trying to reduce rpm on a AC 1000rpm motor. Is there a way to do this? I want 210 rpm output.?: You can by reducing the current with a rheostat but I wouldn't do that because you may burn up the motor, it needs to spin at 1000 rpm to properly cool itself. Dropping it down that far would not be kind to it. What you need is some type of gear reducer between the motor and whatever you are driving.

Q: What happens to a stator wound AC permanent magnet motor when the rotor is removed but still powered?: You will have an energised choke in one place and a rotor that is still spinning due to intertia but slowing down due to friction. With no rotor load the power consumption will go down. Probably. In real life the rotor would go out of control as you tried to disassemble the motor while working and it would shatter into little bits.

Q: And that nikola tesla had a vision of something greater , or simply something else , when he invented the AC engine?: Well, Tesla was a complex and brilliant man so I have no idea what he was thinking when he dreamed up the AC motor. However, with regards to your initial statement about AC engines only working on earth -- I have to wonder why it is you would think that. The laws of physics governing the workings of an AC motor (Maxwell's electrodynamics) is universal everywhere in the Universe. An AC motor works on Andromeda galaxy in exactly the same way it would work on Earth given the same setup conditions. Best regards

Q: I should have paid more attention in school physics lessons!: DC is steady current, lile a car battery puts out-- always steady at 12 volts. Problem is, there's no way to change DC to another voltage. Which you want to do all the time, as various parts of, say, a TV need 1.1, 3.3, 5, 12, 15, and 300 volts. There are devices called transformers that change voltage, but they only work with changing voltages. If you put in DC, you get out exactly zero, as DC has no rate of change at all. Fortunately your simplest kind of rotating generator puts out a sine wave, which is the most congenial of waveforms. That's alternating current. Which is 100% compatible with transformers. So our power distribution system runs mainly on AC. (There is some advantage to using very high DC for long-distance lines )

Q: I am using the motor on a toy car.: on a DC motor you can control the direction fo the spinning, and on an AC motor they olny have one way of spinning.

Q: Rating of an ac motor?: look on the metal plate on side of motor or a sticker based on the simple and vague info thats all i can suggest

Q: Are dc motors more common than ac motors?: Yes, I'll agree with Space... It's difficult to say. DC motors are more common in small gizmos such as computers - the cooling fans for processor chips are DC, motors in cars are DC - that's a whole lot of motors. Anything that needs a good amount of power is AC (in general). An electric can opener is AC, well pumps are AC, all the motors in heating and ventilation systems are AC. That's also a whole lot of motors. It's probably as close as the last US presidential election.

Q: Do we need constant frequency and constant voltage for AC motor forrunning it at constant speed?: You can control the speed of induction motors by varying the frequency. To have the motor operate properly you must also vary the voltage so that the ratio of voltage to frequency is constant. This keeps the iron in the motor from saturating.

Q: related to electric goodshow much is thge consuption of 1/4 hp motor: Single phase (what comes out of your wall outlet) as opposed to three phase motors that are usually used for motors 1 Hp and up in industrial applications. 3 phase is more efficient on large motors.

Q: How much does 15kw power AC power consume per hour?: 15kw, which means 15kw power consumption per hour1kW = 1 degreesSo power consumption is 15 degrees per hour.

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