Worm gear units

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Worm gear units

Q: Is there a minimum KW rating that these are required: Most motors have a fan attached to the shaft or fins on the ends of the rotor to move air through the motor or over its outer surface to remove the heat that is generated in the motor. With variable speed operation, the air movement may not be sufficient to keep the motor from overheating if the motor operates for too long a time at too low a speed. Since that can happen even when the load torque is less than or equal to rated torque, an overload relay that monitors the motor current may not be sufficient to protect the motor from overheating. Motors that are specifically designed for variable speed use often have larger fan blades, larger wire in the windings, more surface area exposed to air flow, more and higher quality iron in the core and other features to make the motor more efficient and to improve the cooling. Such motors may not need thermostats. The variable speed control unit can also be designed to monitor the speed vs. time as well as the current to provide electronic protection. Even with these motor and control design features, local regulations may require thermostats. The requirement may or may not be related to the kW rating. The regulations may be more strict for motors used where flammable or explosive materials are present.

Q: Hi, Please i need help on how to convert 12v dc @ 0.12A from an electric motor to 150v Ac @ 2A.?: You will need an inverter. You will also need a lot more current from you 12v source.

Q: This is a question from one of the sheets which my physics teacher gave me:A student is experimenting with a 6V DC motor. He connects it accidentally to a 12V 'AC' power supply. The motor does not burn out.Can someone answer what will happen to the DC motor when it is connected to the 12V AC power supply via the split ring commutator. Thanks in advance.: Lots of different things could happen. I think your teacher is probably thinking about just one of those things, where the DC motor goes round as though it was connected to 6V DC : have a look at various starting positions for the rotor and work out which direction forces act for different polarity of the AC for a start.

Q: My electric motor will not come on each time. I turn the ac on. especially when it has been cool over night. After driving a while it may come if I have had air coming thur the vent: typically a bad blower motor that has a dead spot on the armature that goes on when traveling down road or when it warms up

Q: now i am using one dc 130 bhp motor for my crane. i want to change the motor to ac type, so what should be ac motor hp that equal to 130 hp dc motor.: A horsepower is a horsepower. It is defined as 550 foot-pounds per second, exactly equal to 746 watts. A bhp is a horsepower. Nobody has any idea where the 'b' came from or what it means. Back in 1962 I witnessed an argument that went on for over an hour in a college dorm, one side saying it stood for brake horsepower and the other insisting it meant blown horsepower, and neither side knowing exactly what those terms meant either.

Q: please: Electronic power steering does not use Power steering fluid. It uses electric motors and sensors to assist steering. Yes it might be any of those problems. Have you had a mechanic (not service manager) ride with you while you drive the car? I cant see how a tune up will have anything to do with it though, since you have electronic power steering. I would look into the torque sensor or the eps motor.

Q: Do we need constant frequency and constant voltage for AC motor forrunning it at constant speed?: I would assume so, DC motors when the voltage is lowered the motor slows. If you're in the US your ac supply is going to be 60hz unless you're modifying it.

Q: ok i have a 95 nissan pickup and my ac went out the other day i can still feel cold coming out the vent the blower motor ant comming on i straight wired it 2 the battery and it works could my resister be bad does the resister have any thing to do wit the ground on the blower motor: The resistor is used to control the speed of the blower motor. Half voltage,half speed, full voltage full speeed.

Q: I am working on a variable frequency drive for an ac motor what parts do i need?: Not enough information! If you have a drive and a motor you have all the parts you need. Hook it up and program the thing.

Q: In creating energy from a magnetic wheel or a gravitational wheel how do you connect to create an energy source?: If you mean the mechanical coupling of a generator and an electric motor, then you can have direct coupling, or by gearing or with belt. However, my worry is you might be speaking of a motor driving a generator and getting its power input from the power output of the generator. That of course is not possible since at most the generator can produce only the electric energy equivalent to the mechanical energy supplied to it. But any conversion from one form of energy is always accompanied by losses; therefore, the system will never work for even a short time.

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