Siemens High Low Voltage Motor 1PQ Series

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Siemens High Low Voltage Motor 1PQ Series

Q: I'm trying to get some information on how to get an electric motor to run in reverse. I know how to make a low voltage DC motor run in reverse by switching the positive and negative to reverse the current flow. However this won't work when I try it on a 120 volt Ac motor. Is there a special switch I need to install or is their a special motor needed for this application. Thanks ( Lee ): You need to use a series motor like the one using for AC power drill. Reverse either the rotor winding or field winding shall make it rotate in opposite direction.

Q: Everything is wired correctly, can hear the relay kick on when power is on but motor will not start: Possibly one of the coils in the motor has burned out... the wire in it will not conduct electrivity

Q: My mixer grinder motor becomes over heated within a minute, please suggest. it is over heating with in a minute and CB cuts supply . I am puzzled what may be the cause?I want to repair it myself.: Check the brass bush below the cutter blade. It may need replacement. I think you wont need to replace winding.

Q: I want to be able to slowly raise and lower a weight vertically against gravity. The raising part is easy, but I cant get my mind around the lowering part. I need the weight to be lowered slowly (constant speed, no need to control velocity) and I also need to be able to stop at certain points along the way. I am thinking electric brake, but I am afraid that that is a more of an all on or all off thing and will help me stop but wont help me lower the weight.: Regenerative braking might be your answer. Essentially, the motor becomes a generator driving a load. The work done to generate power is obtained from the potential energy in the weight.

Q: can avr improve power from dc to ac inverter?: If, I understand your question properly? The most that the AVR chip will do for you? Is smooth out the wave signal of the AC power. As, AC over your home power lines comes in as a sine wave. Most common inverters are not capable of producing true sine wave. Most, at best produce a modified sine. Which means an inverter is just fine for small appliances. Like a coffee pot, small refrigerator, etc. But, create static and white noise for laptop, TV's radios, etc. These require a pure sine wave AC signal. So, yes, it will improve the purity of the power. But, nothing to boost/amplify power.

Q: The difference between a DC motor and an AC motor for a garbage collector: Of course, alternating current is good. Because the AC motor is more stable than the direct current motor, the performance is stable, the heating is low and the efficiency is high.

Q: my teacher said when a heavy load motor run low voltage he was burn because router rotation and field rotation difference is directly pro to voltage its mine voltage is up. when voltage is up. according to ohm low current is high and motor winding is burn but i'm not conform please give me a long answer with example: With an AC motor running on a reduced voltage, slip is increased. That is the difference between the speed of the rotor and the rotating magnetic field in the stator, increases. When this happens more voltage is induced in the rotor bars, so more current flows in them. By transformer action, the current in the stator windings also increases and may lead to overheating and burn out.

Q: what happens if ac is fed to a dc motor?: Depends. If it is what is known as a universal motor, the motor will start and run. However, most motors are optimized to run on either AC OR DC and so will only work satisfactorily on the system it is designed for.

Q: how to reduce single phase AC motor speed?: One way is that copping a reducer gear box with ratio 1:2 or 1:4 and up . one way is to use dimmer speed control ,but will make change to power of the motor.

Q: Is it possible to add a speed control to this electric fan ? If so I will appreciate any quot; linkquot; with information of the kind of controller I may need. I need it running at variable speeds.: You need to specify the type of motor you are going to use. Every different type needs a different approach to speed control. If you want to use a universal motor then continuous speed control of a universal motor running on AC is very easily accomplished using a thyristor circuit, while stepped speed control can be accomplished using multiple taps on the field coil. In the case of synchronous motors you might not be able to change the motor speed. As for connecting the wheel. You might be able to use chain drive. Sprockets on both wheel and motor shaft and link with chain. Possibly you could use a belt. You would need something like a vee pulley on each.

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