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: How to connect the AC motor?: Triangle: above line three root three terminals connected with three-phase power supply, the three terminals should pay attention to the connection, the end of U phase U2 wire and V head end V1 shorted end of V phase V2 wire and W head end W1 shorted end of W phase W2 wire U and U1 head end short circuit.

Q: For a vintage 60s phonograph.Will a 115V motor work as a replacement for my original 90V motor?They are both 60Hz.It's because I can't find an exact replacement and this is the closest I have been able to find online.I guess what I want to know is: Is the voltage stamped to the side of my broken motor the necessary voltage required to run it or is it the max it can take so it doesn't get damaged?Thanks.: If the motor is stamped 90 volts, this is normally telling you the maximum voltage (also, in most cases for an AC motor you cant go too much below the rating either). If you measure 90 volts on the wires going to the motor (and assuming the phonograph runs from 120 volt wall socket), they have used a transformer to reduce the voltage for some reason. If you connect a 115 volt motor the the 90 volt lines, it will probably work, I dont see any harm in trying it. If the motor is not strong enough with 90 volts, you could just connect it to the 120 volts that supplies the phonograph and not worry about the 90 volt connection.

Q: Like if you wanted the motor to only spin 1rpm (unrealistic but yeah just for examples sake) would it still have the same amount of torque as it would at its rated voltage? If not is there any way to achieve this goal of instant torque and variable speed?: For operation below normal voltage, an AC motor’s torque capability is approximately proportional to voltage squared. If the voltage is 1/2 of normal, the available torque will be about 1/4 of normal. Speed can not be controlled very well by reducing voltage. If the load torque is naturally reduced by reducing speed as happens with a fan or centrifugal pump, reducing voltage and motor torque provides some degree of speed control. Voltage reduction with a fan or pump load essentially allows the fan or pump to overload the motor and slow it down. The only way to have good variable speed performance is to use a variable frequency drive (VFD). A VFD controls the power to the motor and keeps the voltage proportional to the frequency as the frequency is reduced to reduce speed. VFDs work best with 3-phase motors. VFDs with limited performance are available for specific types of single phase motors. For more detailed information, look at the Wikipedia article.

Q: Rating of an ac motor?: Google the size of the motor and you should find something...You need more info if u want this answered...good luck

Q: I have two types of machines which have a water jet drive, together with a motor. one has an inverter driven DC motor the other an inverter driven AC motor. If the water jet makes the load run faster than the set speed of the motor, can/does the different type of motor allow itself to be quot;pulledquot; round faster? or is a braking force applied to the motor. I am mostly interested the difference, if any between AC and DC motor in this respect,or will both do the same job depending on how the inverter is set up.: Both an AC motor and a DC motor can apply braking force if the load exerts torque tending to increase the motor speed. When applying braking torque, either type of motor will function as a generator and transfer power from the load to the power source. A load that applies torque in the direction that would increase the motor speed is often called an “overhauling load.” An AC motor control inverter, more often called a variable-frequency drive (VFD), is normally not designed to accept energy returned from the motor. A standard VFD can be expected have some means of protection that might allow a limited speed increase and de-energize the motor if the limit is exceeded. If the motor id de-energized, it will be driven to a higher speed by the load, but most AC motors can tolerate being driven considerably above the normal speed. VFDs can be purchased with a dynamic braking circuit that will dissipate braking energy in resistors or a regenerative circuit that will return braking energy to the AC power source. Sometimes a small amount of dynamic braking control capacity is included in a standard VFD, but resistors usually need to be added externally. A DC motor controller is usually a converter or chopper. The controller for a permanent magnet DC motor might be called an inverter, and the function would be the same as a VFD controlled permanent magnet synchronous motor. DC motor controllers can be furnished with either dynamic braking or regenerative braking. DC motors are generally less tolerant of over-speed operation.

Q: Can a DC series motor operated on an AC supply?: An universal AC/DC motor is series wound, so a series DC motor will probably run on AC, but if it was designed specifically as a DC motor rather than a universal, performance might suffer.

Q: I know that one uses an galvonometer and slip rings and one uses a battery and commutator. But what else is there? Thanks: Basic DC motors use a commutator. There are other types of DC motors that do not use a commutator at all. It is all based on how the motor is designed. Actually, an AC generator, could be operated as a motor. The AC generator uses slip rings to conduct a magnetizing DC voltage into the rotor to create a magnetic field that cuts through the stationary windings to produce electricity. Forget the galvanometer thing, that is for science class demonstrations of concept, not for practical machines. The DC motor, and an AC generator both can use a battery in their operation. There are many different types of AC motors. The common induction AC motor found in most appliances, such as the clothes washer, has a rotor made up of shorted bars that produce a magnetic field, that follows the magnetic field produced in the stationary windings. Universal electric motors are actually DC motors that can be operated with DC or AC. These motors have a commutator in them.

Q: It spun freely and I was able to spin it and it started again but then after about 15 minutes it quit altogether. No humming anymore either.: Hello. My name is Richie. I am an electrician and a home improvement expert. I will help you the best I can. More that likely it is the motor. Smell the motor and see if it smell burned up. If so, you can replace it yourself by looking online at Grainger and getting a new motor. Grainger isn't cheap but they will have it. You will need to take off the old one before you take it to get a new one. Good luck and God Bless. Jesus Christ loves you.

Q: Which price is higher, AC motor or direct current motor? Which one has a longer service life?: The DC motor, relying on power, motor rotation, heat production, but the effect is better. Therefore, when in use, according to the needs of choice.

Q: Why is the AC motor connected to the capacitor?: AC motor to connect the capacitor, in brief, the capacitor is to produce a phase difference, and let the motor magnetic field "asynchronous", the motor will rotate.

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