YTRVF(W)Variable一Frequency Three-Phase Asynchronous Stewing Motor for Tower Crane
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Overview
This series motor is a variable-frequency three-phase asynchronous motor exclusively designed for tower cranes and other similar dewing mechanisms. It is applied to the dewing
mechanisms in very harsh working conditions such as construction site or open pit quarry.
Features
With introduction of spline drive shaft, it has good mechanical bearing capacity;
The motor is a variable-frequency motor featuring a wide range of speed regulation, high efficiency, small starting current, big starting torque and overload ability;
A thermal protection component is buried into the in winding, making motor more safer and reliable;
Excellent dedicated variable-frequency insulation materials are adopted, improving greatly the insulation reliability;
Compact structure, small volume, lightweight, so it can be braked quickly and positioned accurately. It is suitable for frequent starting and braking;
YTRVFW series motor is provided with an eddy current brake on the basis of YTRVF series. It enables more smooth starting and deceleration braking, making the operation
more smooth and accurate
Users’Options:
This series motor is divided into F1 and F2
F1 with airvane brake;will be determined by the
F2 without airvane brake;users when signing the contract but an encoder interface can be reserved
- Q: The motor I'm talking about is the main large motor in the very bottom of the unit. The unit (which is in the basement) started making a loud humming/squeaky sound. I automatically knew it was probably bearings. I took off the lower panel after I shut it off and reached back there and turned the pulley and it is squeaky yet turns pretty easy. We sprayed some WD-40 on the center and turned it back on and there is no noise now.Is there a way to use a grease gun to grease the bearings normally? If so where would I look for it? Any other suggestions are very welcome!
- LOL contactor?..women (shaking head). Sounds like this is your indoor blower motor. If its on the pulley you could grease in the center where it connects to the shaft. Other than that use wd40 like you did. If the bearings bad you're gonna have to get a new blower motor eventually. I say this because they don't sell the pulley/bearing seperate from the motor. Few hundred $ installed by ac tech. Only other thing it could be is where the motor mounts up. Could be vibrating. Wd40 would help or it may have vibrated loose over time needs to be tightened down. Sounds like the blower motor pulley from what you explained...
- Q: Brushless DC motor is AC motor or DC motor, why?
- That is the difference is that the brushless DC motor and AC motor rotor stator are magnetic, is only the armature, rotating magnetic field in the stator of the former is generated by the sensor and a driving circuit, an alternating current generated by the.That doesn't know much, but brushless DC motor has one advantage, that is, it has a linear characteristic of DC motor and a little better.
- Q: without adding any gearing or uping on the size,wattage, etc.
- No, not really. As with any motor, you are going to get X power out for Y power in. Power in is electrical wattage, and power out is mechanical wattage (or horsepower). Electrical power is volts times amps, and mechanical power is speed times torque. You can't get more power out- increasing the torque- without more power in. The only practical way to do this would be to feed the motor more power (in the form of voltage), but that would increase your power consumption, increase your speed, and you're not likely able to get a higher AC voltage very easily.
- Q: I just asked a question about generating electricity from an AC motor and someone told me to quot;energize the windingsquot;. Can someone tell me what that is?
- you might be able to put some AC voltage at the correct phase into the capacitor start winding of the motor. If it is not a capacitor start motor, it might not have a winding that can be energized to operate as a generator. It will be tricky to produce the AC voltage at the correct phase and may not be practical since it might need to be in-phase with the speed of the motor. My guess is you will not be able to energize the capacitor start windings of an AC motor with DC and get anything useful. It might make a nice experiment for a science fair project, however if you do do an experiment driving with such a motor, be careful, the voltages can be lethal. a much better way to get electrical power from commonly available parts is to spin an automobile alternator that you got from a junkyard
- Q: How does it go from off to one direction to off to the other direction? How does the switch work?
- Usually a two direction motors are three phase motors thou it can be single phase motor but with three phase motor its easy to control. This if it works on AC currant. It also can be DC that is easer to control. 3 phases AC motor you can reverse the direction of rotation by switching two phases instead of U V W you have to make it U W V or any other combination. And it will reverse you can achieve this with a switch to give an order to a contactor to do the switching. Note that you may need a time delay to make the switching to have the motor at complete stop before reversing. Single-phase motor is very complicated process I think no one do this. A DC motor is easy you just switch the + to – and the – to + then it will reverse this can be achieved by a change over switch. Also you can use the change over switch for the 3-phase motor.
- Q: if i have a ac battery pack connected to a motor then does the motor have to be AC or DC
- There are no AC batteries. I do not know what you mean when you write of an AC battery pack.
- Q: I am using a single phase ac electric motor (115 V, 60 Hz), and I need to calibrate the speed with some other equipment. What can I use to vary the output slightly around the max?According to the specs, it is only a 1.6 amp motor at max draw. For this reason, I am concerned about using a router speed control because the high resistance may just turn it off and on.Thanks a lot for your help!
- A variable frequency drive is what you want. Any number of vendors supply them
- Q: Plz provide the answers in points.. I need it for my school seminar assignment.
- DC generators 1. Best for charging batteries for electric vehicles and rechargeable batteries in all portable devices. 2. Used to run electric drive motors in industrial machinery because DC motors have easier and more precise speed control than AC motors 3. DC generators used to run traction motors in diesel locomotives. 4. Used to run DC welders for specific kind of welding 5. Used to run electrolysis and electrowinning of metals from solutions. --------------------- AC generators --------------------- 1. Used to generate all of the electricity we use in households and businesses. AC has a lot less line losses than DC so is universally used worldwide to supply electricity 2 Used to run transformers which allow the stepping up or down of voltage and current. DC can't do this. 3. Used to run three phase electric motors which are much cheaper than DC motors and provide more available horsepower per pound of motor over DC. 4. Cheaper per kilowatt-hr and delivery charge of power than DC.
- Q: What are the speed regulating methods of AC motors? Detailed point
- 1. use frequency changer to change power frequency speed regulation, speed range is wide, stability smoothness is better, mechanical characteristic is hard. That is, with the rated load, the speed drops much less. Stepless speed regulation. It is suitable for most three-phase squirrel cage asynchronous motors.2., change the magnetic pole logarithmic speed regulation, belong to level speed regulation, speed adjustment smoothness, generally used in metal cutting machine tools.3. change slip speed regulation.
- Q: i conducted experiment by taking two electric motors from rc toys and connected them by gears.1.5v is supplied to a motor and other motor also rotates due to gear arrangement.we also know that electricity is generated in second motor.i want to know electricity generated is ac or dc current.
- The current generated is ac current.
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YTRVF(W)Variable一Frequency Three-Phase Asynchronous Stewing Motor for Tower Crane
- Ref Price:
-
- Loading Port:
- China Main Port
- Payment Terms:
- TT OR LC
- Min Order Qty:
- -
- Supply Capability:
- -
OKorder Service Pledge
Quality Product, Order Online Tracking, Timely Delivery
OKorder Financial Service
Credit Rating, Credit Services, Credit Purchasing
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