Siemens Reducer Gear Motor

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Q:Why does high-speed rail use AC traction motors in China?
The design of asynchronous motor in AC motor is perfect, robust and easy to control. It is absolutely dominant in AC motor. The permanent magnet synchronous machine motor model is also very good, is the main application of high precision digital machine tools, hybrid electric vehicles, but also on some protection measures not in place, there is overheating phenomenon of demagnetization.
Q:New blower motor on 7900 coleman gas furance will not turn my fan unless i push the fan with my finger to ge?
I presume the motor is an AC motor. It almost certainly uses a start capacitor to provide the push you are giving it with your finger. The capacitor itself may be bad, but it is even more common to have a bad start contact in the control circuit. The capacitor is only connected long enough to get the rotation going. The first source should help.
Q:3000 rpm ac 3 phase motor is good or 1500 rpm, for same kilowatt please explain?
Depends upon your requirment. If your application required higher speed then 3000 rpm motor os good. If your equipment desigen for lower speed then 1500 rpm motor is good.
Q:How does an electric (AC) motor work?
In the above diagram, you can see two magnets in the motor: The armature (or rotor) is an electromagnet, while the field magnet is a permanent magnet (the field magnet could be an electromagnet as well, but in most small motors it isn't in order to save power).
Q:How to judge the quality of three-phase AC motor?
First of all, cut off the power supply, hand disk motor rotation, whether there are bearings stuck, rotor sweeping, and other mechanical faults.Remove the motor power line (U1, V1, W1, U2, V2, W2, U1, U2 respectively) measured with a multimeter, V1, V2, W1, W2 resistance, resistance is similar to the normal phase, if the difference is too large winding interturn short circuit, three-phase three-phase (also check the resistance between each other between the infinite resistance is normal) and ground (for housing) resistance.
Q:How do reversible gear motors work?
Usually a two direction motors are three phase motors thou it can be single phase motor but with three phase motor its easy to control. This if it works on AC currant. It also can be DC that is easer to control. 3 phases AC motor you can reverse the direction of rotation by switching two phases instead of U V W you have to make it U W V or any other combination. And it will reverse you can achieve this with a switch to give an order to a contactor to do the switching. Note that you may need a time delay to make the switching to have the motor at complete stop before reversing. Single-phase motor is very complicated process I think no one do this. A DC motor is easy you just switch the + to – and the – to + then it will reverse this can be achieved by a change over switch. Also you can use the change over switch for the 3-phase motor.
Q:Electric Motor types for a conveyor system?
Conveyor Motors
Q:What type of AC>DC power supply should be used to drive a DC motor?
Any kind of supply will work. But get one that has at least twice the current capacity the motor spec lists, as more current is needed for startup. Unregulated will work, but you will get small speed variations as the line voltage varies.
Q:how can find an electrical ac motor with outer diameter of approx. 100 mm and with minimum of 500 watt. power?
What is the purpose? where you are going to use ?Is it continuouse rating Intermittent ratings.If it intermittent rating go for a smal size drilling machine with double speed or use a suitable speed controller use it for your pupose .These all high speed ,high torque ac motor it will not run continuously .It may be available in 120 volts /220 volta Ac even in 12v ,18,24v dc. If you need low torque use a table fan motor but wattage will be less.Best of luck.
Q:How is the speed of an AC motor varied? How is the speed of a DC motor varied?
hi. AC automobiles are designed and equipped otherwise than DC automobiles. AC automobiles take great element with regard to the 60 hertz clock of a ability line (or 50Hz in different countries) - this suggests the flexibility line differences stages 60 circumstances a 2d - to rotate, on an identical time as DC automobiles are designed with the voltage point utilized. you could administration them the two, yet with diverse ability. the least complicated to regulate is the DC motor (replace the potential (the voltage) and it turns slower or quicker.

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