Siemens High Low Voltage AC Motor

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Siemens High Low Voltage AC Motor

Q: Squirrel cageWound RotorSynchrosVariable reluctancePM rotorsynchronous condenserHybridsynchronous reluctanceswitched reluctance: Squirrel cage that are sold as components of products are manufactured to suit the requirements of a specific product. The motor characteristics can be expected to be generally similar to standard motors of a similar type nad size. The characteristics of other types of motors are discussed in general terms in text books etc., but specific information is probably available only from the manufacturers. Some manufacturers have very detailed product information online.

Q: This is crazy but since i work under someone else i have no choice but to ask for help. My boss has a 3450 RPM, 60 cycle, 1 phase, 115/230 volts, 12.4/6.2 amps. Here's what we need to do other than buying a different motor. A pig will be roasted under a BBQ pit. I need to use this power-full motor and add some kind of extra belts to pulleys or something like that. We need to make this pig rotate at a much and i mean much slower rate so i cooks nice and thoroughly. My dead line is 6/26/09 If anyone has any brilliant ideas plz help.: You can build one if you have the time, and $. Start by putting a small pulley on the motor shaft, and have it turn a large pulley. On the same shaft of the large pulley, have another small pulley, which turns another large pulley that's attached to the shaft, the pig is on. It will give the motor ample power to turn the pig, and it will slow the rpm's way down.

Q: And what fuses would I need?: Assuming a Y connection, each phase uses 1/3 of the total power. P(phase) = P(total) / 3 = 33 kW. P(phase) = V(phase)^2 / R(phase). You've given P, and asked for V, but didn't specify R.

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: What I want is to generate electricity out from a 2Kw generator alternator and driven by a 800watts AC motor or any AC motor which is much smaller in electricity consumption. I am not thinking of a perpetual machine but to minimize my electric consumption. The AC motor will be connected to the power grid to drive the 2Kw generator alternator.. is this possible? Thanks ahead.: You can operate a 2kW generator with an 800W motor, but your total output will be exactly 800W. However, about 10% of that 800W output will be heat, so the useable, electrical output will be about 720W. Often people will spin the shaft of a generator by hand and think that, since it takes relatively little torque to make the shaft turn, that a smaller motor could spin the generator at its rated speed. Since the generator's electrical power rating is higher than the motors, it will then put out more energy than is required to power the motor. The small motor can indeed spin the generator to its rated rpm. But, when an electrical load is connected to the generator, equivalent to the generator's rating, the torque suddenly increases and will drag the motor to a stop, or to a much slower speed, reducing the generator's electrical power output below that which the motor draws.

Q: Why is an A/C motor not used as common as an Induction motor? Whereas, A/C generator is a household name.: We mostly using A/C motors. because we need not no conversion for AC -DC. A/c motor;

Q: I have a 98 BMW 7 series. The AC Blower needs to be replaced. Does the mechanic have to remove the dashboard to install a new one? Or can the replacement motor be installed through the front engine bay?: It is not easy, but the AC blower motor should be accessible without removing the dashboard. You may have to stand on your head to do, it, but work at it until you get the old AC blower out.

Q: an electric motor draws a current of 11.5a in a 240v circuit. what is the power of this motor in watts?: If its an ac motor, you do not have enough information. You would need to know the power factor or use a power meter to measure the power directly. Also, are you looking for the power taken by the motor or the power given out? They are different. Usually the power will be stamped on the nameplate, this will be output power. Power does NOT equal volts times amps in ac circuits despite how many people try to say it does. It's not half either

Q: . . . They have brushes, but if they are DC, it sure is hard to figure out where the AC gt; DC transformer would be.: All Dremel hand tools use AC motors. You can tell as there is no AC/DC adapter over the cable or enough room to fit one into the units' body.

Q: why do we use ac motors for tower crane?: AC motors are used in tower crane due to following- 1. Availability of power. Generally power distribution by state utility is AC only.For DC motor one has to provide AC -DC converter...involving an extra cost without any extra advantage. 2. Crane motors require high starting torque..In slip ring induction motor (used for cranes) this can be achieved by adding resistance in rotor circuit. 3. In the latest technology, for energy efficient use, variable voltage variable frequency drives are used. This technology is possible with AC only.

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