YTLVF(E)180 Frequency-changing three-phase asynchronous motor for tower crane.

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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.

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Q:How can I change the alternating current welding machine into a DC welder?
This is: ZXG series silicon rectifier (dead silicon) arc welding machine, AC arc welding machine itself power factor is lower, plus rectifier loss will be lower. The power consumption is too large and uneconomical. It has belonged to the sort of our welder.
Q:The difference between a variable frequency motor and an ordinary AC motor
Variable frequency motor in the speed range of speed can be arbitrary, and the motor will not be damaged, the most general domestic general motors can only run on AC380V/50HZ under the condition of ordinary motor can reduce the frequency or frequency range, but can not be too large, otherwise the motor will heat and even burn.
Q:Winding of single-phase AC motor?
Depending on the type of motor, the range motor is the same as you say. Asynchronous motors are not like this.
Q:Why asynchronous motor AC excitation, rather than DC excitation?
An induction motor is a kind of AC motor based on the air gap rotating magnetic field and the induction current in the rotor winding to generate electromagnetic torque, so as to realize the energy conversion. As the rotor winding current is induced, so there is a certain difference between its speed and synchronous speed. Asynchronous motor and synchronous motor difference: synchronous motor running normally, the revolution is fixed, not because of changes in load changes. In normal operation, the revolution of the induction motor is not fixed, but it varies slightly with the change of the load. Synchronous motors are complex circuits with reversible energy (motors and generators are interchangeable theoretically) and are used as generators
Q:AC or DC motors for rolling gate motors?
Door body is relatively small, such as general shops, doors using DC motor is more convenient, because the door is relatively light, and can add reserve power supply, to prevent the city power failure, the coil gate can still be used.
Q:The difference between DC motor and AC motor
Master formulas n1=60f/P, S= (N1-N), /n1, n= (1-S), 60f/P, and understand their meaning (very important), and be able to flexibly use these formulas for calculations. Also remember: the slip rate of the motor at normal load is approximately SN, 0.01-0.06. The examples in the book should be emphasized.
Q:Are there 3 harmonics in the voltage of a three-phase alternator? Why?
If the generator is loaded and the load has another 3 harmonic generation, then there may be 3 harmonics in the outlet voltage when the generator is loaded;
Q:What is brushless motor, no and brush what is the difference?
Brushless motor refers to brushless DC motor, which consists of motor, its main body and driver. It is a typical electromechanical integration product.Because of the brushless DC motor is controlled to run, so not like synchronous motor frequency control under heavy start as in the rotor plus a start winding, does not produce oscillation and step mutation in the load. The permanent magnet of small and medium capacity brushless DC motor is now using rare earth neodymium iron boron (Nd-Fe-B) material with high magnetic energy. Therefore, the volume ratio of the rare earth permanent magnet brushless motor reduces a frame number compared with the three-phase asynchronous motor of the same capacity.
Q:What's the difference between a three-phase AC motor and a DC motor?
In general, the armature winding of the three-phase AC motor is on the stator, and the armature winding of the direct current motor is on the rotor;
Q:How many kinds of braking modes are there in AC motors? What are the characteristics of each?
Energy consumption brakingWhen the motor cuts off the AC power supply, a DC power supply is added to any two of the stator winding to generate a stationary magnetic field, and the stationary magnetic field is generated by the inertia rotation of the rotor to produce a braking torque

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