Siemens Reducer Gear Motor

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Siemens Reducer Gear Motor

Q:Why don't AC motors use commutators?: Because the direct current motor changes the current direction through the commutator, the coil continues to rotateThe alternating current is always changing direction, there is no need to use the commutatorThe difference between an engine and an electric motor is that there is no power supply on the engine connected to the motor, and the motor is connected to the power supply, but it may not have no other electrical appliance

Q:I'm working on a sculpture piece, I need a way to turn a large 40quot;, 100 pound wheel at about 1 revolution per hour.I'm wondering what kind of motor I could use for this?So far I've come up with either a windshield wiper motor, an auger motor, or a microwave's turntable motor. I would have to gear them down further than they already are to get my wheel spinning at 1 rph...But would these motors burn out after a few days time running non-stop? Is there a better alternative out there?I was also thinking some sort of time-based controlled motor, maybe Arduino based?: Take away the big AC motor out from any cloths dryer or washing machine . They are heavy duty motor and have a lot of torque to do your requirement. Or you could use the hot air blower motor if your house equips with this type heating system. This motor can be easier to take out and put it back.

Q:When an AC motor overheats badly, what is generally the first point or two that it will fail at? And what will be required to remedy the problem?(I see alot of carbonization of the coils in various places.)'m working on bringing an old single phase 120 V, 12 A motor back into operation but I'm a bit new to motor theory and many other things under the sun.I pulled the motor off the table saw it came from, cleaned it up, realigned the extremely misaligned rotor with the stator so it turns easily again BUT it still isn't working, it just sits there and hums it's terrible hum. So obviously the alignment is not the current cause of the motors inability to operate.Thanks for your help!: There are many case for non operation of ac machine.This trouble shoot will help to find the answer 1.Find the air circulation holes block age 2.Find the carbon brush position and condition. The second point may be the Solution for your problem

Q:so the VFd changes the frequency of the current being used but does it pull more current when it changes the frequency? for this i am not sure if it is used to step up rpm or only step down..thanks: First answer here is correct, but I don't think it is exactly clear. The speed of an AC motor is determined only by the frequency, not by the current. So increasing speed does not increase current needed. The torque produced by an AC moter is determined by the current. As the load against the motor increases, therefore the torque needing to be produced by the motor increases, the current required increases. So a VFD will deliver whatever current is required to turn the motor as long as it is within the specifications (ability) of the VFD.

Q:I am connecting a 400 watt electric motor to my bike, along with a inverter since the motor runs of ac power. I am trying to find someway of adding a new and separate gear onto my bike without damaging the bike, or welding anything, and making the device possibly removable. I am hoping to run a chain from the motor to the gear I added on.: The present in an electrical motor can expand at low angular speeds, the motor would overheat if it is furnished with rated voltage but most effective turning slowly. The bearings can also be broken via high axle loads too.

Q:How did they convert ac to dc current on electric train transformer when they didnt have transistors then?: An ideal transformer is a equal voltage per turn device. If the secondary winding has 28/115 times the number of turns as the primary winding then it will produce 28/115 as much voltage as that applied to the primary. But an ideal transformer is also a power in equals power out device, so that the product of primary voltage times primary current equals the product of secondary voltage times secondary current. So the secondary current will be 115/28 times the primary current. -- Regards, John Popelish

Q:need to know how many 12 volt batteries it will take to run the motor: Unless the motor is one designed to run on AC or DC, you will need one of the other suggestions made re inverters or genemotor sets Otherwise 10 - 12V. batteries, or 20 if set for 230V.

Q:what is adjustable-speed ac motor?: budy, this is not adjustable speed, actually it is a variable speed motor. we use frequency converter to do this job.i.e. variable speed

Q:i have a motor that need dc current but i don't have the equipment with dc i have only ac. what is the difference of ac and dc: AC voltage alternates polarity 60 (50 in Europe) times a second, meaning the AC current changes direction that often. Only AC is good for transformers, and AC motors tend to be more efficient and constant speed. You just need to know what DC voltage you need for the motor. If it's 12 volts, most people will just use a car battery for a source. You can hook batteries in series for higher voltage. You can also buy power supplies that turn AC into different DC voltages.

Q:If we will supply 220VAC to a DC Motor of rating 220VDC.: it depends on how the DC motor is modulated. Usually a DC motor needs a speed controller to initiate the commutation of the windings because DC doesn't have phases like AC. More than likely, the motor would just buzz or vibrate, but it wouldn't spin. It'd also get pretty hot or it would start arcing across the brushes because the current would have nowhere to go.

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