Siemens 1PQ Series AC Motor

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Siemens 1PQ Series AC Motor

Q: Say i have a 400hp ac 3-phase motor.speed is given as 3575 rpm.Does this mean that if left to run on it's own (with 60hz and the related voltage etc) or unloaded it would produce 3575rpm? and the torque would just be power/speed?if this is the case, does this mean that if i loaded the motor with double this torque its speed would half?Basically i'm trying to figure out how to work out the performance characteristic of a motor for different loads given the basic manufacturers data.thanks...: No the speed would not be half, the power consumption would rise. You need to review the motor manufactures performance curves to find it's characteristics.

Q: Is the stepping motor an alternating current motor or a direct current motor?: The stepping motor is an open loop control element which transforms the electric pulse signal into angular displacement or linear displacement. In the case of non overloaded, the motor speed and stop position depends only on the pulse frequency and pulse number, regardless of load changes, when the stepper driver receives a pulse signal, it drives stepper motor to set the direction of rotation of a fixed angle, called "step", it is the rotation of the fixed point of the operation step by step. Number of pulses can be controlled by controlling the angular displacement, so as to achieve the purpose of accurate positioning; at the same time by controlling the pulse frequency to control the motor rotation speed and acceleration, so as to achieve the purpose of speed.

Q: Will a DC shunt motor operated on an AC supply?: You can run a DC motor (of the correct voltage) on AC if you use a full-wave rectifier to turn the AC into DC.

Q: I know AC is more expensive and DC does quite have the performance... but I'd like a secondary input. Cost is of no matter, however performance, torque, maintenance, and efficiency are all concerns.: DC okorder /

Q: Hey I understand the basic concepts of a dc motor/ alternator and want to know how many turns and such can anyone help I am going to try to make it charge some batteries by wind: well mike is right about making a dc motor or an ac motor/generator is a difficult job, it requires specialization courses like machine design but if you want to do it for jus fun you tmight find it on youtube. btw dc motor and alternator are almost same dc motor/generator has commutator which helps in rectifing the voltage but the large scale, one used in turbine are quite different constructionally hope this helps

Q: Types of AC motor speed control and the difference between them: Motor variable pole speed regulation ---- a specific motor internal to do a specific winding, through the motor of different wiring mode to change the motor magnetic pole logarithm, get different speed. Formula: synchronous motor speed, =60f/, magnetic pole logarithm (f--- frequency), magnetic pole logarithm change, the speed also changed. The disadvantage is not stepless speed regulation (such as 2-4 pole motor, synchronous speed is only two gear, when connected to the 2 pole is 3000 rpm, when connected to the 4 pole, is 1500 rpm.

Q: Why is DC motor speed regulating better than AC?: The magnetic flux can remain the same when the excitation voltage is constant at the time of DC speed regulation.

Q: How to drive a 32 hp ac generator by a 5 hp ac motor?: Why do you want to do this? Are you attempting to get 32 HP of output from the generator using the 5 HP motor? Won't happen. The most you can get out of this arrangement is 5 HP minus the heat lost by the motor and generator and whatever losses there are in the mechanical connection between the motor and generator. And if you put 32 HP of electrical load on the generator while supplying it with 5 HP of mechanical energy from the motor, you will just stall the motor, it will not be able to overcome the torque from the generator.

Q: I have this saw and the speed control board has gone bad,so i am going to try and use a variable ac or dc power supply to run the saw,but i am not sure which one the motor uses. I have already hooked the motor to a battery charger,it ran find but does not have enough torque for the blade to cut wood.: I can't imagine a contractor grade Craftsman 20 scroll saw running on DC. It doesn't make sense. If this thing has a normal two or three wire cord plug then it's certainly 110 Volt AC current. I don't think Craftsman ever made a scroll saw that ran on DC.

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