Siemens 1LA8 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 1LA8 High Low Voltage AC Motor

Q: There seems to be some controversy over whether or not the voltage that goes into a brushless motor from a ESC unit is DC or AC. But that isn't my problem, the purchasing of a ESC unit makes my project work. What is the output voltage of a brushless motor classified as? and I am aware that more than two leads can come off of one of these motors, how does that effect the output?: The brush less motor does not output any power. Then where is the equation of an output voltage? Its output is mechanical torque. I guess you may have position outputs from hall effect sensors to indicate to you which coil is to be energized..

Q: difference between Ac and DC electric motors?: one uses alternate current which is slightly unstable meaning the power fluctuates) and one uses direct current. (more stable)

Q: How do ac motors work? Do they convert ac to dc then through coils?: Yes, you've got it right.

Q: why do conveyors use AC 3 phase motors?: It has more torque and small in size.

Q: I took apart a couple of small motors and found that they all have the copper coils attach to the shaft and spin around stationary magnets, rather then the other way around.The reason I'm asking is because they also have those two copper prongs touching the shaft in order to transfer the electricity back and forth, which wouldn't be necessary if you had the magnets spin and the coils stationary.: Motors work by having the rotor poles constantly attracted toward the stator poles they are approaching, and repelled from the stator poles they are moving away from. This means either the rotor poles or the stator poles must have alternating magnetic polarity. In a motor designed to run on AC, you could have magnets in the rotor if the stator coils are driven by AC. However this would require that the rotor spin exactly at the AC rate. Instead, AC motors don't use permanent magnets at all, but use the magnetic induction effect, with no commutator necessary, to produce rotating polarity in the rotor that matches that of the alternations of the stator field. For DC, coils are needed in the stator so the rotation of the rotor can be used to switch its own polarity via the coil current reversal provided by the commutator. If you had PMs in the rotor of a DC motor, with only DC in the stator coil there'd be no rotation. I suppose you could design a DC motor with a PM rotor and a commutator that switches the stator polarity. I think you'd need slip rings plus a commutator. That should work and it could be an interesting project.

Q: Hey, i know the difference between ac and dc motors but i still don't know when to use them. I mean, when is it wiser or better to use DC over AC motors and vice versa? In what applications is one above the other?Hope you can help me in my problem. Thnx XD: To okorder

Q: And what fuses would I need?: It shows that info on the motor nameplate...I think you need to add a factor to the FLA for the fuse size...

Q: Why does the current in an AC Induction motor start to go up when the voltage is dropped off?: Because the induction motor is a constant power device. If the voltage goes down, the current goes up to maintain constant power.

Q: Could you please provide a link towards a data-sheet for a 150 Watt (or around that number) AC motor and specify dimensions? (length, height.)Thank you.: That okorder /

Q: Its called a pancake motor. it generates 500 hp at 6500rpm for 60 seconds. and 420ftlbs of torque. oh also i like to mention its only 8in. by 12.5in. and 147lbs in wieght. wow. i hope to make a race car run from this powerful motor. and when i can figure out how to generate 2000kw in a car then i could synchronize 3 of theses motors and drag race this car. cool huh.: humm sound like you and i have sort of the same idea except i was thinking about a regular car. i thought the weak link was the electric motors, sound like you have that handled, now for the power plant must be small and light i was thinking of a small jet engine like the ones used for RC models with a direct drive to hydraulics that turn a generator sort of link a turbo prop with a reduction gear box. not sure why GE is not using this for there large diesel locomotives, i know that jet engines are used on ships and for a power plant some times such as a APU used on 747 and C-5 aircraft. if this works please e mail me i want to see this happen.

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