YVF(E)Three一phase Asychronous Motor for Braking

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Overview

YVF(E) three-phase asychronous motor for brakingv is provided with an electromagnetic brake set between the rear cover of the primary motor and axial-flow fan
This kind of motor is widely applied to the occasions requiring for speed regulation, rapid stop and accurate positioning.

Features

Variable-frequency regulation in a broad range;
High efficiency, small starting current and big starting torque;
Capable of rapid braking and accurate positioning. It is suitable for frequent starting and braking

Q: grounded motor last year and worked.grounded this year worked 3 days: Take your car in to have it looked at. There could be a problem with one of four things. A. Blower motor. B. Blower motor resistor. C. HVAC controls. or D. Electrical wiring.

Q: Im designing a twin screw extruder, and I am using an AC motor to power it. I will have a gear box with a reduction of 10:1 and 2 out but shafts. IE motor gives 3000RPM I want the 2 screws to rotate at 300RPM. the torque at this speed should be 15Nm what will happen to the torque after its placed to 2 shafts and does it increase 10:1 through the gearboxs as the speed is reduced?Thanks folks!: either shaft can deliver the full torque if the other is not loaded. The sum of the two loads has to be less than the specified torque, minus friction losses. yes, reducing the speed by a factor of 10 will increase the total torque output by that same factor, less friction. .

Q: This is probably a really dumb question, but I have a motor that says SINGLE-PHASE 115 VAC @ 50/60 Hz on the side with two wires coming out of it. If I just wire it to a plug will it run on a 120V home circuit?: The motor frame needs to be grounded for safety. This can be using the ground pin in a 3 wire cable and plug, plus the other two for active wires.

Q: what are the important uses of dc generator and dc motor?: Uses of DC Generators: Many DC generators are driven by AC motors in combinations called motor-generator sets. This is one way of changing alternating current to direct current. Factories that do electroplating and those that produce aluminum, chlorine, and some other industrial materials need large amounts of direct current and use DC generators. So do locomotives and ships driven by diesel-electric motors. Because commutators are complex and costly, many DC generators are being replaced by AC generators combined with electronic rectifiers. Rectifiers are devices that let current flow in one direction only. They permit use of simpler, more rugged AC generators, even when DC is required. Uses of DC motors: DC motors are used for a variety of purposes, including electric razors, electric car windows, and remote control cars. The simple design and reliability of a DC motor makes it a good choice for many different uses, as well as a fascinating way to study the effects of magnetic fields.

Q: I have an auger that is triggered every 5 seconds for 4 seconds. It spins at 1 rpm. brushless 120 VAC at .5 amp. It can handle about 100 inch pounds of torque. I don't have the ability to change the programming on the motherboard. That would be too easy. lolI want to decrease the rpm in half when I want to without burning up the coils of the motor in the mean time. Could I put a dimmer switch in series with the motor until it puts out 60VAC? I just figured it might get stuck trying to push the load and burn up. It is an expensive little motor to experiment on.Any ideas is appreciated: Could I put a dimmer switch in series with the motor until it puts out 60VAC? it depends on the exact type of motor. universal or ac/dc motors can be speed controlled, but synchronous motors spin at a rate determined by the supply FREQUENCY so changing the voltage would do no good. Could I put a dimmer switch in series with the motor? no, dimmer switches produce spikes which would do your motor lots of no good, and produce catastrophic interference. And since its an inductive load you would also blow the dimmer.

Q: How did they convert ac to dc current on electric train transformer when they didnt have transistors then?: You don't need a transistor. You just need a diode. Before they had solid state small diodes they had big chunky ones made of metal plates covered with selenium which had the same one-way-current properties you need to make DC from AC.

Q: When I turn on the AC/heater/vent fan, it runs, but is very loud and there is very little air coming from the vents. What is the problem?: My Dodge Ram did the same thing remove the fan motor 3 screws passengers side under dash remove ele plug mine had foam inside it from the door that closes to divert the air. check and see if the door is broke or jammed with the motor out.

Q: AC motors are designed to operate at +/- ____ Percent of their rated potential difference, and +/- _____ percent of their rated frequency?: To approach the question the way it is asked would be to say few. Only synchronous A/C motors operate at a fixed speed based on the number of poles and the frequency of the power supply. A synchronous speed can be in increments of 3600 RPM or 2500 RPM depending on the frequency. Induction A/C motors will operate at the synchronous speed when there is no applied load and will begin to slow down slightly as load is applied. That slip is usually around 2- 3% when the nominal design horsepower is produced. . For example, an 1800 RPM synchronous motor will operate at 1800 RPM when fully loaded. A common induction motor will operate between 1800 and 1750 RPM. Most motors are manufactured to specific horsepower ratings at their design speeds and so cataloged. When a device needs a motor and it's design horsepower is known, the motor selected will be the next larger size. For instance a direct drive pump may be rated at 17.5 horsepower non-overloading (maximum) at 1750 RPM. There are no standard motors made to that specific horsepower so a 20 horsepower motor will be selected and will run efficiently at that partial load. Depending on the motor cooling system and the motor wiring insulation design, some will have transient service factors of 10-15% above the full load rating, but prolonged operation in an overloaded condition will shorten the motor life. In the larger sizes, motors can be custom built to closely match a non-standard horsepower within the normal speed range.

Q: I've heard that hair dryers with AC motors are better then dryers with DC motors. Why? Is it just because they last longer?: Probably for the same reason we do not use electric cars with fuel cells. There are a ton of good old DC motors hauling out there. The simplicity of the system makes them work and easy to diagonose and fix. The biggest draw(funny huh) back to DC is the damage that is done to the switching gear turning them on and off due to the arc that is pulled on DC comared to AC. The other trick is that generators by default create AC, which is then turned into DC, which has some loss in the process.

Q: How can you turn a simple DC electric motor into an AC motor (the simplest way)?: Because of the different ways they work, the best way would be to rectify the AC power to DC. An AC motor has a much different rotor than and DC.

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