Siemens High Efficient High Low Voltage AC Motor

Inquire Now

OKorder Service Pledge

Quality Product, Order Online Tracking, Timely Delivery

OKorder Financial Service

Credit Rating, Credit Services, Credit Purchasing

You Might Also Like

Siemens High Efficient High Low Voltage AC Motor

Q: The coils in a motor are being magnetized when we supply AC current to it and thus the motor runs.What is the magnetic power produced in the coils in terms of quot;Teslasquot; when the motor is being run in full speed?: The magnetic field strength does not change for AC motor,because power is applies to its field coils (do not mix it up with AC-DC series motor,field strength changes follow the load). To measure the AC magnestic field strength is quite difficult because the field polarization keep on changing according to the frequency. A hard way to find out is counting how turns of coil and the size of steel area,then calculate it.

Q: I've got a basic 12 oscillating fan. Had it for about 6 months. I've noticed that if it's been off for awhile and then I turn it on, it will start really really slowly. I can hear a slight hum and I can see the blades turning veeeery slowly. If I leave it on and wait 2-5 minutes the fan will just suddenly start working properly. This only seems to happen when the fan has been off for awhile. If it's working normally and I turn it off and then on it will start without problems.Does anyone know what's going on with it? Is the motor dying? Is it clogged with dust?: Many AC motors have a capacitor that is used to start the motor and then is switched off after it reaches top speed. It is not designed to stay in the circuit for extended time. You should always start a fan on High and after it's up to speed, switch to Med or Low. If you've been starting in on Med or Low and skipped past the High setting, you never switched out the capacitor and it's probably dead now. Your description is very typical for this kind of problem. If you read the directions (who reads them for a fan?!?), you'd probably see that they wanted you to start in High and then switch to a lower speed. It probably isn't worth repairing, but it is worth remembering to always turn it on High before reducing the speed to what you want when you get your next fan.

Q: I think putting resistance in series will reduce input voltage to motor which may affects motor life.: You can if it is single phase by sacrifying efficiency and wasting energy.

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: Both posters are correct, frequency determines speed and current determines torque. Many VFD's can go up to 2x the normal speed, some go more. Most AC motors can do 1.5x the design rotational speed, many can do 2x, only a few can go faster than this. Motors have thermal issues limiting them to the rated HP. Because power = speed * torque, if you overspeed them, you have to have less torque. So, if it's going 2x faster, you can only get 1/2 the rated torque. The VFD has this limitation programmed in it, but on most you can also program lesser current limits. Thus, you can only overspeed the motor if the load is using less than the rated HP at the design speed. By the way, since motors are designed to provide a certain torque, at lower speeds, they are limited to that torque (except for temporary overloads like starting), so they will produce less than their rated HP.

Q: I'm building this machine which will enable user to change the speed of the motor, rather frequently. The motor may have to work in speeds much lower than its maximum speed for long periods or even always. Should I use a DC motor with electronics to control the speed? Or an AC motor coupled with an inverter?: Use DC and stepper motors, especially for anything moving slow for long periods of time. You don't need A/C arc over etc. Anything robotics traditionally uses DC stepper motors.

Q: what is the advantage of DC servo motor over the AC one for robotic application?: AC power can cause data signal interference. Data cables need to be shielded resulting in larger cable diameter, more weight and expense.

Q: Here is the question: Some motors must be able to switch directions, sometimes spinning clockwise and other times counter-clockwise. For example, the motor in a VCR must fast forward and rewind videotape. In these situations, explain which type of motor is the best choice. Could someone please help me understand? Everyone is saying it's DC, but I don't understand why.: A motor of either type has 2 wires. If an a.c. type motor, it matters not which way round you connect the a.c. supply to the motor: it will always spin the same way. A d.c. motor will reverse its direction of rotation if the wires are switched over.

Q: I know they come with different max torques... but can you give me a range of torque for the 120VAC 60HZ motors?: Horsepower = Torque*Rpm/5252 Many AC motors have a pretty flat torque curve, but not all. You can get an approximate value from: Horsepower*5252/RPM = Torque in foot pounds Example, a 2HP/3600RPM motor would give about 3 foot pounds of torque at 3600RPM. If the motor is rated at 1/2 horsepower and 180RPM, you would get about 14.5 foot pounds of torque You can modify these motors' torque within very wide limits with a gear reduction, increasing or decreasing it.

Q: What would happen if you tried to run a DC (direct current) motor on AC (alternating current) power?: I think the motor will turn back and forth if the frequency of the AC power is low enough, and it will just vibrate if the frequency is too high.

Q: I'm looking for an AC Motor, with high torque (around 130-200lbs/ft) that doesn't use more than 5kw. Let me know your thoughts... Tony: Its slightly a seize 22 suituation once you've an electric powered vehicle you employ the mains to fee it up yet this comes from potential stations that extra usually than not use gas or coal. in case you employ a diesel vehicle you're nevertheless employing oil yet in a diverse sort. the desirable aspect to apply is a gas cellular vehicle the position liquid hyrogen is switched over to electrical energy with in straight forward words water as a byproduct yet you nevertheless favor to apply resouces to make the liquid hyroden. the desirable aspect to do is cycle or walk.

Send your message to us

*Email

*TEL

*Quantity

*Unit