Siemens High Low Voltage AC Motor

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part namebrandmodelVoltageprotectioncooling
motorSiemens1LA81PQ8400V,690V,2.3KV,4.16KV,6KVIP55IC411 (1LA8,1LA4)
IC416 (1PQ8,1PQ4)



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Q:how do you calculate the start up current on a 3 phase ac motor?
Look for the motor Type listed on the nameplate. Each US motor type has a corresponding locked rotor KVA in the National Electric code. Starting current = locked rotor KVA/voltage.
Q:how can i use a DC to run a AC 220V 50Hz & 160 W motor?
You will need an inverter and a transformer. The inverter changes dc into ac at the battery voltage, and the transformer, selected with the proper ratio to convert the inverter output to the rated voltage of the motor
Q:What are the various parts of an AC motor??
A typical AC motor consists of two parts: An outside stationary stator having coils supplied with AC current to produce a rotating magnetic field, and; An inside rotor attached to the output shaft that is given a torque by the rotating field.
Q:how do i change the rotation on a g.e. 5kc49tg1255x ac motor?
if it is a single phase motor,you cant. a 3 phase motor can be reversed by swaping any 2 of the 'hot' wires
Q:How to connect an AC brushless motor to a transformer?
If this really IS an AC motor and has 3 wires, it's 3 phase. If it's an AC motor single phase, 1 of the wires is for another purpose e.g. capacitor connection. So if it is marked brushless, it could be a 3-phase model aircraft type motor, which will require its mating speed controller/ 3- phase (battery or DC fed) controller. The other possibility is you have a 3- wire computer brushless DC fan motor, 2 are for connection to DC, and the 3rd. is a rotation confirmation signal wire. Further. Transformers output AC. A motor running as a generator cannot possibly boost its voltage. I'm glad you haven't mentioned joule thief''' this time. You still have not stated EXACTLY what you are trying to achieve, or maybe this is the start of another brand new misconception re electrics/ electronics?
Q:Overvolting a DC motor?
Assuming it is a 1.0 service factor and the type is a series motor, you would get right at 1/3 more RPM depending on the load. Motors being so different, some like a little high voltage some like low voltage, about the only way to really know the current draw is to measure it. I would not allow it to run anymore than 10% over rated current. Next is the quality of the motor, some AC motors ran off VFDS run at higher speeds than rated, but again current and load will have a huge effect. But back to your extra 12 volts, the internal components are designed to withstand a certain RPM. However some motors are built to the bare minimum design, others are built to withstand some overload. It's a big jump, but again a series DC motor is load controlled, we don't know the load, and only by measuring it will we. I would say it the chances are the motor lasting is going to go down by the amount of the over voltage. I would suggest you use some type of mechanical transmission to increase the wheel speed which is what I assume you are after. Again this creates different loads, so find a DC amp meter so you know where you are at, and mount it on the kart, a volt meter would be nice also.. A larger driver pulley[or gear] on the motor shaft and a smaller driven pulley [or gear} will give you more RPM at the driven pulley. Just like an automobile, there are transmissions to control the RPMS of the engine, at various speeds along with torque at various speeds. If you go to a bearing supply store, they will have a line of variable adjustable pulleys that can be adjusted in or out to increase or decrease the diameter, you might find a device like that very helpful. Direct drive is smoother and dependent again on the motor, would be a great drive train but you are talking a very sophisticated and expensive motor and controller.
Q:how come the rotation direction in AC motors doesnt change ?
Because AC motors are designed to know about this and operate accordingly.
Q:Record player motor help, cant be found?
Unless you are making a direct drive, in which you would use a polyphase digitally controlled motor (like a VCR capstan drive), you get one with a faster very stable speed, and with enough torque to turn a platter. You use a belt or idler to speed it down to the turntable (which has a big ring in it for the belt or idler to mate with. A microwave turntable motor is probably not exaclty 33 1/3 RPM. You need to somehow do 45 RPM as well. Using a belt or idler it is doable, with a multi-step pulley or motor shaft. If you use a DC or polyphase motor you can regulate the motor speed to get 45 or 33 RPM.
Q:Does over spinning a shaded pole AC motor make it a generator?
Yes. It will generate power back into the AC supply. Some induction motors can be coaxed into generating into a load with a capacitor attached but without an AC supply connected. However, that is not a very reliable or versatile set-up.
Q:Confusion about AC motor?
The speed of an induction motor is almost independent of the torque, and in a synchronous motor it is totally independent of torque. So if a motor is loaded at a constant torque and the voltage changes the power remains almost the same and the current goes up. This means the motor acts like a constant power machine under these conditions.

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