YTLVF(E)180 Frequency-changing three-phase asynchronous motor for tower crane.
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- Loading Port:
- China Main Port
- Payment Terms:
- TT OR LC
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GENERAL
This motor is improved and developed on the base of the operation conditions of tower
crane and adopting the foreign advantage of special motors. The primary motor is
frequency-conversion dedicated motor. The thermvsensative elements are embedded
in the windingsSpeed sensor and brake can be set as requested by various users
APPLICABLESCOPE
This motor is mainly used for the lifting mechanism of tower crane and also for the lany mechanism of large-sized crans
Model:
YTLVFE180M1-4 18.5KW
YTLVFE180M2-4 24KW
YTLVFE200L-4 30KW
and any other Power.
- Q: what determines the speed of electric motors?
- The amount of current applied to the magnets in the motor.
- Q: Is the 380V single-phase AC motor the same as that of the 220V AC motor?
- First of all, we should understand the meaning of alternating current, that is, the line of fire. There are four lines in the alternating current power supply 380V line, one of which is the zero line. Suppose that A, B, C [phase line], D [zero line], referred to as "three-phase four wire", in the three-phase any one phase line and D line [zero line] combination is referred to as "single-phase second-line"". Three-phase four wire power also referred to as "380V", also referred to as the single-phase two-wire 220V electricity; if it is 380V should be called the motor three-phase AC motor, if 220V motor can be called single-phase AC motor, the motor wiring is of course quite different. If the three-phase AC motor is not in phase (or bad), it can not work. If the single-phase AC motor is wrongly connected to the 380V, the second phase is very dangerous, and the motor will be burned immediately.
- Q: Why is it better to use a DC motor rather than a AC motor?
- AC motors are lower in cost when used for loads requiring more than 1/2 horsepower. And they are more reliable and easy to maintain. Plus they don't have brushes like DC motors do. They are also smaller in size than DC motors. DC motors are better to use when you need variable speeds because AC motor speed control is more expensive. And DC motors are efficient running at speeds lower than AC motors can.
- Q: can thet be replaced, and how do you do it?
- Blower Motor Bearings
- Q: How many lube points are on a Leeson AC motor? Cat# g140471.00. How much lube grease is to be applied?
- If i remember right there are two lube points. Most AC motors have lube points at the upper and lower bearings. about 6 ounces of DOD-G-24508A grease is about all you need. Over greasing can lead to a messy situation. The way we grease at work is based on the motor horse power. It's not exactly an exact science. Mobile Red is a good substitute for 24508. Silicone grease can be used but tends to not last as long.
- Q: AC motor stator winding does not turn, why the back EMF?
- According to the electromagnetic law, when the magnetic field changes, the nearby conductor will produce an induced electromotive force, which is in accordance with Faraday's law and Lenz's law, and the original voltage at the opposite end of the coil is reversed. This voltage is the back electromotive force.
- Q: What determines voltage usage for electric AC motors?
- The design. It will be designed for a particular voltage usage.
- Q: What is the power factor of single phase capacitor start motor while running under load or without load. Some motors have capacitor permanantly connected in series winding. What power factor of these motors?
- Yes, there is a power factor for motors. For any AC fed electrical device, unless it is purely resistive (which motor is not), there are power factors. Because motors are inductive, it has reactance components. By having reactive components, the rise of voltage is not in synch with the current - which causes apparent power consumption differ from effective power consumption. This is the power factor. Exactly what it is for your motor, there is no way for me to tell. The capacitor is used (required) for AC motors for single phase to create a 90 degree off phase signal, so the second winding develops magneticism at the different timing from the first. Without this phase differential, the motor won't turn. On 3 phase motors, this is not necessary, as you already have 3 phase that are 120 degrees off from each other. The only way to get an answer to your question is to look at the spec for your motor.
- Q: Everything I read on the Internet says that AC drive systems on locomotives is so much better than DC systems in every way. Why then when you go to the EMD factory web site do they advertise their locomotives in DC versions? Why do customers want DC locomotives?
- You might want to have a look at two of the major manufacturers before you ask this question. General Electric Locomotive Division and Electromotive Division of General Motors Corporation, (AKA: EMD) The newer model locomotives, 1990 and newer use an alternator in their system to generate the DC Power needed for the main traction motors. General Electric with their new Dash 9 AC4400CW are a Hybrid. Infact all Diesel Electric Locomotives since 1930 have been Hybrids! Bet you did not know that. The only ones that were not were the Krauss Maffei Locomotives. These were Diesel Hydraulic just like your automatic transmission in your car. EMD's Line-Up are the SD70MAC, SD75MAC and now their new SD90MAC-T Because they are using AC to DC power they generate more than 4000 horsepower. The other reason for using DC at the Traction Motors is a device called a Dynamic Brake. This device allows the polarity to be reversed in the traction motors, and act as a brake during down hill operations. This almost elminates the need for physical braking to control train speeds down hill. I hope that answers most of your question!
- Q: why choke or du/dt filter is used with vvvf drive of ac. motors?
- Vvvf Drives
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YTLVF(E)180 Frequency-changing three-phase asynchronous 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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