Q:The difference between AC motor frequency conversion speed regulation and voltage regulation speed regulation

Variable frequency speed regulation: large speed range, high smoothness, energy saving, can realize constant torque or constant power speed regulation, but must have dedicated frequency conversion power supply, the cost is high.

Q:How to speed the AC motor?

(1) rotor circuit series resistance: used in AC winding asynchronous motors. The range of speed regulation is small, the resistance consumes power, and the motor efficiency is low. Used of cranes.(2) change the speed of power supply voltage, the speed range is small, the torque decreases greatly with the voltage drop, and the three-phase motor is usually not used. Used for single-phase motor speed regulation, such as fan.(3) cascade speed regulation, in essence, is the introduction of additional rotor electromotive force, change its size to speed. It is also only used in wound motors, but the efficiency is improved.(4) electromagnetic speed regulation. Used only for slip motors. By changing the exciting coil current, stepless smooth speed regulation, the mechanism is simple, but the control power is smaller. Not suitable for long term low speed operation.

Q:All I have is a motor, fan, a plug, and about 5 or 6 wires sticking out of one side. How do I get the motor running?

It's an AC motor, you can't run it from DC, which is what i assume you mean by power supply. Someone answered this question the last time you asked, with details on how to connect the wires to an AC outlet. .

Q:I check with our supplier. they told me that we have to load on motor then only it will show correct rpm ( both low and high). what is the maximum load for this motor It is shoiwng 1.3 amp

DOES THE MOTOR HAVE A 2 SPEED switch, and what are you using it for? 1.3 amps has to be 120 volt. its probably a 2 speed motor without a switch. in that case it has to be under a load. if this helps you cant hear it change speeds, even under a load, i really need more info before i can help you. how are you checking the rpms? butch

Q:If my old AC motor rpm was 850, what damage will a 1050 rpm motor cause?

Context? It depends on what it's driving. But we don't know that, do we? Tell us more and we can tell you more.

Q:I let it rest for a while and it runs again for several min. but slowly grinds to a stop again. Sounds like bad motor. Capacitor is fairly new. I cleaned off the dust that was caked on and put the motor back in. It ran all night but did the same in the morning. What causes this you think? Also where do I buy a blower motor? And lastly, do I need to be licensed to buy AC parts?

Sounds like the bearing{s} are shot. Unless you have a puller and are fairly handy it would be advisable to purchase a new motor; they are not that expensive. Pull the motor and get the specs frame type, hp, model and serial # or just take the motor with you to a parts supply house. And no……… you don’t need to be licensed to purchase parts; only for refrigerant.

Q:How to choose the AC motor?

1. According to the power consumption of the load, the motor power is selected, and the motor power is 1-1 of the load power. 2 times2, select the speed, the motor speed on those a few, choose a slightly larger than the load you need.3. Choose the installation form of the motor4, but also choose three-phase single-phase, as far as possible to choose three-phase

Q:I used my ohm meter and find the pairs and number at random, 6-3, 5-2, 1-4, then I found my last 3 leads that showed continuity and number at random 7-8-9...then I wired the motor for 208 3ph as follows, 4-5-6- togethers,then 7-1 for line 1, then 8-2 to line 2, and 9-3 to line 3, the motor it is not grounded and the leads are not open, m' I missing something or the motor it's not good?

It is wired right.Check the leads to ground to check and see if it is bad.If it is bad it will read a direct short to ground.To ground I mean a scratched off or unpainted spot on the motor housing.

Q:What's the difference between a three-phase AC motor and a DC motor?

In general, the armature winding of the three-phase AC motor is on the stator, and the armature winding of the direct current motor is on the rotor;

Q:The blower wheel went out because, somehow a tiny metal screwdriver got into it. Also the resistor is out and my AC isn't as powerful as it should be. Could that be the cause? PS sorry about the grammar I'm on my phone.

Sounds like all these things are unrelated to each other. Unless you damaged the evaporator (cold coil inside the car) while changing the blower you shouldn't have had any leaks. BUT if you put the wrong screw in the wrong location and forced it in then you might have punctured the evaporator. One has nothing to do with the other unless you damaged something (or that screwdriver managed to puncture the evaporator). The resistor pack is for controlling motor speed. If your blower isn't running on high, perhaps you miss wired something. But generally I'd not expect that to be the case. The other alternative is that the resistor pack (also not related to the blower failure or the leak) may need to be replaced. Maybe that screwdriver damaged THAT. In short, if the refrigerant leaked out - you have a leak. If the fan isn't running on high - you have a motor speed control issue. 'av'a g'day mate. )