Siemens 1PQ High Low Voltage AC Motor

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Siemens 1PQ High Low Voltage AC Motor

Q: In the old days they used a hewittic mercury-arc Rectifier, to convert electricity from ac to dc. I would love to know why they had to do this!: It can. See the link below.....

Q: What are DC and AC servo motors? What are the characteristics?: Into a DC servo motor brush and brushless motor, brushless motor has the advantages of simple structure, low cost, high starting torque, wide speed range, easy control, maintenance, maintenance is convenient but (for brush), will produce electromagnetic interference, the environment requirements. Therefore, it can be used for cost sensitive ordinary industrial and civil occasions. Brushless motors are small in size, light in weight, large in output, fast in response, high in speed, low in inertia, smooth in rotation and stable in torque. It is easy to realize intelligent, and its commutation mode is flexible. It can be changed by square wave commutation or sine wave commutation. The utility model has the advantages of no maintenance, no carbon brush loss, high efficiency, low running temperature, small noise, small electromagnetic radiation, long service life and various environments.

Q: Increasing the number of wire turnsDescreasing the strenght of the fixed side magnetsMaking more splits in the commutatorChanging to a power supply with more electical output.Help please!: If it is an AC motor, the speed will be set by the frequency divided by the mumber of pair of poles. One pair of poles will give you the highest speed, equal to the network frequency. Most AC motors are two pairs of poles. You can also use a variable frequency drive. If it is a DC motor, it will spin faster if you reduce the shunt field current/voltage. I.e., descreasing the strenght of the fixed side magnets . .

Q: What's the difference between a three-phase AC motor and a two-phase one?: The three-phase power is generally 380 pay, have four lines, of which three is the root of a FireWire, zero line; 380 volts of electricity is used as power industry; two-phase power is generally 220 volts, two lines, one of which is a FireWire, zero line is.220 volts of electricity is as electricity, or small machinery and electricity.

Q: i want a fairy simple one that doesn't take too long time or not too complecated, thanks.: If you have a strobe light you can confirm that it is turning at just under 60 cycles/s because the AC is 60 cycles/s You can take off the fan blade and confirm that it is now turning even closer to 60 Hz because of a lack of load. You can increase the load by blowing air at the fan with another fan and watch it turn slower. If you can destroy the fan (there are many being thrown away each day) you can cut off the copper shading coils that help it start up. You can measure the current in all the above situations and observe that the closer to 60Hz it turns the less current there is.

Q: what are the differences between ac and dc generating motors?: I think you are talking about electric generators rather than motors, although the problems are similar. AC generators are more simple ----they have a rotor coil rotating inside a stator coil which generates a magnetic field. The voltages induced in the rotating rotor coil is fed out via a brush commutator to outside wires. The DC generator is similar except that the commutator is more complex. It reverses the positive-negative polarity as needed to keep one output wire positive and the other negative. This involves reversing the connection to the rotor as needed during rotation. The AC voltage from an AC generator can also be converted to DC with a diode rectifier, which in most cases is preferred (less cost, more reliable --less wear). A car uses an AC generator (alternator) for this reason.

Q: What determines voltage usage for electric AC motors?: Do you mean what determines what voltage you apply to an AC motor? You apply the voltage and frequency and number of phases the motor was designed to use. The designer-engineer designs a motor for a specific voltage, frequency, and number of phases, and power out, as well as size, RPM etc. And to operate it correctly, you apply that voltage, etc to the motor. .

Q: 4.5 amp 120 VAC 60hz MOTOR SPEED CONTROL SWITCH? help!?: Most AC motors are not suitable for simple speed controls. Generally, you should contact a motor manufacturer's tech support to see which (if any) speed controls are suitable for a particular motor. Split phase motors are unlikely to start at a low speed setting and will burn out.

Q: This is a motor from a sliding gate, I noticed that it was not working properly, so i opened it and put it into manual mode(releasing the load and making it move freely) but then once it is turned on it it rotates a little and then stops again a little , stop and then works ok and when it is turned off it runs for another small time. Before it worked perfectly fine. Is this a problem with the capacitor? Thanks: It sounds like the symptoms of age actually; but even so the cause is really the starter cap, or mechanical binding. I would clean and lubricate the moving parts and replace the capacitor.

Q: I've got a motor off of a Sears air compressor. I found one cap is bad, and the other missing. The ohm reading on circuit with bad cap is 0.8 and 1.4 ohms for circuit with missing cap. So how do i figure what value of cap to get for the missing capacitor? I am trying to fix this for a guy from work. He was as usual not listening to my advice and was buying capacitors to replace the missing one. They all burned up. I'm sure he had no idea what size to get. But what i wonder is if the start cap is bad would that cause the other to burn out? I'm thinking the circuit with the lower ohm value is the starting windings. Am i right or backwards.: Try the link, I've had success with then in the past. Good luck!

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