Siemens 1PQ High Low Voltage AC Motor

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part name	brand	model		Voltage	protection	cooling
motor	Siemens	1LA8	1PQ8	400V,690V,2.3KV,4.16KV,6KV	IP55	IC411 (1LA8,1LA4)
						IC416 (1PQ8,1PQ4)

Siemens 1PQ High Low Voltage AC Motor

Q:What are the differences between AC motors and DC motors?: (1) the same structure, alternating current generator and DC motor structure are composed of stator, rotor, iron core, coil, magnetic pole, brush and so on.(2) the same electromagnetic applications are the applications of electro magnetic and magneto electric phenomena.(3) using the same conversion asynchronous motor, as long as the prime mover (such as turbine, diesel engine etc.) drag, rotor speed is n higher than the rotating magnetic field N1 synchronous speed, slip even if S= is negative, coupled with the exciting current, turned into AC asynchronous generator; DC motor, if the power part it changes the rotation for external power, armature winding and excitation winding end it on a DC voltage, the DC motor can also be used as a DC generator.(4) operation and maintenance are required to check the operation of the same operation, sound and vibration is normal, the ventilation is good, the bearing lubricating oil is sufficient, the stator windings and the temperature of each part is normal, there is no abnormal rotor brush spark voltage and current is in the rated range, chassis grounding or zero is good.

Q:Hey guys, my AC tries to start outside it seems, but then i hear a big BEENG sound for like 4 seconds (as if the AC tries to start). Then it stops. I have a digital thermostat and its showing all 8888. I tried to stop the circuit breaker and restart it to no avail. It's the unit outside that seems to be the problem.ANy clue what's going on here and how much it will take to fix it?: Sounds like the AC motor's burnt out. Expensive, I'm afraid as the motor and AC pump are a sealed integral unit. The AC tries to start, then the circuit breaker trips due to the internal short drawing overload current.

Q:I purchased a repair manual and it's not even showing anything called a resister card for a blower motor. I went to Murray's Auto Parts to have them check the relay switch,but they couldn'tt check it there. They told me to check the resister card before purchasing blower motor. The blower only runs on high speed.: It's located behind your glove box underneath by where the passenger feet go you ll see the blower motor wiring going to it it has two 5/16 screws that hold it on.

Q:Does the horsepower make a difference? Does it matter? My fan motor went bad about 2 years and 7 months ago. The sticker says it should be replaced with a 1/5 hp fan motor. It was replaced with a 1/3 hp motor and now that one (the 1/3 hp one) is bad.Is it because a 1/3 hp motor was put in as opposed to a 1/5 hp? I was told by one technician that different hp's can be used because the motors are designed to work under for units of various hp's (an all in one as he put it.) Is this true?Looking forward to your answers.: Over sizing a motor on older unit is not a wise choice. Higher power draw from the 1/3 hp motor may not be suitable for the electrical wiring system your unit carries. Or the motor could be defective from the beginning. To answer your question, yes, it matters, especially in a/c system.

Q:Do you know of any manufactures of High On/Off Cycle Motors, with a web site.: So you've got a lot of 480-vac machines cycling every minute and you're wondering if you can get a motor that cycles every 30 seconds? Sure. It is just part of the specs. There's a much higher amperage on start up and all of your machines do that frequently, so they must dissipate heat faster than some consumer grade product or anything not spec'd for frequent cycling. They have to have larger fins, cooling fans, or the vendor just derates some larger framed motor. Sure sounds like your vendor screwed up and is trying to cover his *** after the fact. How could he possibly think you'd want to be surprised by the delivery of a different motor? Sure, call out an alternative in the BID process. But DELIVER what was ordered, unless you've got an approved change order. The lack of reversibility sounds like yet another deviation from specifications and one that is very obviously less flexible, less desireable and non-compliant with the purchase order.

Q:How many lube points are on a Leeson AC motor? Cat# g140471.00. How much lube grease is to be applied?: If i remember right there are two lube points. Most AC motors have lube points at the upper and lower bearings. about 6 ounces of DOD-G-24508A grease is about all you need. Over greasing can lead to a messy situation. The way we grease at work is based on the motor horse power. It's not exactly an exact science. Mobile Red is a good substitute for 24508. Silicone grease can be used but tends to not last as long.

Q:Hi i am looking for a company that makes hollow shaft ac motors , it is american company that is called US , but i cannot seem to find it anywhere , i tried googling for it but obviously the brand name ( US ) isvery common that i get a lot of results that i am not looking for , can any one help me with this brand , if there is a website or something for them i woud really appreciate it: Try okorder /

Q:what are some things that use ac instead of dc electricity. Why do some things need ac and some need dc? Also, how are the currents changed to form ac or dc?thank you: That my friend is a big *** question. (I'll keep it simple) AC =Alternating Current so voltage goes 0v 110v 0v -110v around 60 times a second. DC=Direct Current so voltage goes 12v............ forever (or till your battery goes flat) First AC is far easier to generate, Even cars generate AC and convert it to DC. Cars use DC because you can store it in a battery, which in turn means you can use it to start your car. The sockets in your wall are AC most appliances that plug into the wall use AC, computers and electronics generally convert AC to DC because that's what electronic components need to work. Transformers need AC to work, (I wont go into why), and the transmission networks use very high voltages, like 110,000 volts, then convert it with transformers for use by the consumer AC motors are also far more simple and easier to produce. So most fridges, washers, dishwashers use AC for their motors. they may also convert some electricity to DC for the electronics. AC is converted to DC with a bridge rectifier, which is made up of diodes, which are essentially a one way valve for electricity. DC is generally used for low voltages and AC for higher because AC is easier to switch off than DC. When you switch something off it makes arcs (electrical spark), once an arc has started it is hard to stop, for example an arc might be capable of starting at 1mm but wont stop till the gap is 3mm. So with that, if a switch opens to 2mm a DC arc wont stop, but because AC passes through 0v 120 times a second the arc stops and cant start again. I'll leave it at. There is loads more to it, and some of what I have written is very simplified. If you're truly interested perhaps you should consider becoming an electrician

Q:I just asked a question about generating electricity from an AC motor and someone told me to quot;energize the windingsquot;. Can someone tell me what that is?: you might be able to put some AC voltage at the correct phase into the capacitor start winding of the motor. If it is not a capacitor start motor, it might not have a winding that can be energized to operate as a generator. It will be tricky to produce the AC voltage at the correct phase and may not be practical since it might need to be in-phase with the speed of the motor. My guess is you will not be able to energize the capacitor start windings of an AC motor with DC and get anything useful. It might make a nice experiment for a science fair project, however if you do do an experiment driving with such a motor, be careful, the voltages can be lethal. a much better way to get electrical power from commonly available parts is to spin an automobile alternator that you got from a junkyard

Q:Why is Tesla's Model s electric vehicle using AC motor instead of the more popular frequency conversion DC motor?: The structure of DC motor is complex, the cost is relatively high, and later maintenance is troublesome. Larger motors require an external cooling fan. Can be very simple to realize the speed of the economy. Big torque and good mechanical characteristics. The AC motor has the advantages of simple structure, low cost and simple maintenance. You can't speed it yourself. In the past, the frequency conversion was not timely, and the DC motor was used in places requiring good speed control (machine tools, cranes, textiles, etc.). However, with the development of frequency conversion, the performance of vector frequency conversion + frequency conversion motor is close to that of DC motor.

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