YZP2(IPW54) Special frequency-changing three-phase asynchronous motor for tower crane

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5.5-hundreds KW


     YZPE2 variable-frequency three-phase asynchronous motor for lifting and metallurgy purposes is developed according to the characteristics of the
available tower crane, based on almost 10 years of experience in R&D of primary hoisting motor brake for the tower crane and metallurgy variable-frequency
motor. Lt is mainly used as a lifting mechanism of the tower crane, and also a trolley mechanism of heavy-duty crane


A variable一frequency special motor is equipped, available with a wide range offrequency conversion, small starting current and big starting torque;
A thermal protection component is buried into the winding, and can be wired into motor temperature control& protection system, making the motor
operation more secure and reliable;
Strengthened inter-turn insulation is adopted in the stator winding, so the insulation reliability is higher;
Equipped with axial一flow fan or centrifugal fan, with good cooling effect and lower motor temperature rise;
Special bearing is adopted for variable一frequency motor, so it's more suitable for variable一frequency operating environment;
The rotating shaft is subject to alloy steel heat treatment, showing better mechanical strength;
The brake (fitted with special manual release device) is a de-energized brake type (national utility model patent, Patent No. ZL201120188124.9), with big
braking torque and short response time


A rotary encoder can be set at the end ofthe motor as per the user demands, so a speed closed-loop control system isformed to make adjustment more reliable and accurate. The encoder model isconfirmed by the users when signing the contract

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Q:Can AC motors be controlled by frequency converter?
If your site does not exist in low frequency operation, you can choose ordinary asynchronous motor, if there is low frequency operation that suggested that you choose frequency conversion motor, mainly ordinary motor cooling fan is connected with the main shaft of the motor, when the heat dissipation fan low down, along with the heat dissipation of the motor will not be able to guarantee. But the frequency conversion motor is the opposite, because the fan is controlled separately, belongs to forced air cooling. Even at low frequencies, there is no effect.
Q:what is an ac motor and what is its function?
The most common type of AC motor is the 'Squirrel Cage' motor. This has what appears to be a solid rotor, but is actually copper or aluminium bars embedded in steel. The electricity rotates around these bars, producing a rotating magnetic field,which pulls the bars, and so the rotor, around with the field. The power supply needs to be more than 1 phase, but a single phase supply can fool the motor into thinking it is 2 phases, by using a capacitor connected in series with one set of the motor windings.
Q:What are AC and DC motor?
ac .is alternating cu rant like in your house .dc is direct cu rant like in your car . both work the same DIFRNCE voltage
Q:Motor PWM how to speed?
This question is not clearly stated in this space. To be brief, AC motor speed control has PWM drive mode of AC motor, DC motor speed control has PWM drive mode of DC motor.
Q:3phase AC Induction Motor derating or Upgrading the Insl class, according to ambient temperature rise?
In theory the heat dissipation is linear, so an increase in ambient of 10C (aka 10K) will cause the winding temperature to increase by the same amount. Yes, you can use a higher insulation class throughout to allow the motor to run hotter. If you are not the motor manufacturer, ask the manufacturer what they would recommend.
Q:What are the characteristics of ac synchronous motor and list a few of its applications?
* Constant speed usage for a class B NEMA design (standard industrial duty) @ ~100-200 motor staring torque.
Q:what might be the sypmtoms if theres a problem with brusehs or/and slip rings of a DC motot and of an AC motor?
If you isolate your question only to the rings or brushes, you can narrow possible problems down to corroded/worn parts, overheated parts, or poorly installed parts. The symptoms will most likely be the motor not functioning at all, refusing to start itself but will run with a little helper push, noises from the end with the parts, or a completely locked up motor. The solution to the problem is most always replace the worn parts. In most cases ive seen tho, if the rings or brushes have worn naturally (without the help of careless operator), other parts are getting ready to go out (bearings, coils, and such). The symptoms can differ between the types of motors as well and always check the input power source and controller before you pull the motor apart.
Q:What are the similarities and differences between brushless DC motor and AC brushless motor?
Generally used in Brushless DC generator excitation, AC motor is brushless, there is also a brush, brush motor are generally small motor, because of the need to address the short-circuit current commutation time, so the exchange of brush motor is not too large, think like DC motor, DC motor there are also problems of DC motor reversing, so don't do too much! Brushless DC motor is actually an AC motor, which is usually used in the excitation system of the generator!
Q:Difference between energy consumption braking of DC motor and AC motor
Energy consumption braking is a form of braking.It is divided into DC motor energy consumption braking and AC motor energy consumption braking.
Q:Can the voltage regulating module be used as AC motor speed regulation?
Ordinary three-phase AC motor (commonly used three-phase AC asynchronous motor) is the stator winding into three-phase alternating current, resulting in a rotating magnetic field (the rotation of the magnetic field speed n=60f/p, also known as synchronous speed). The rotating magnetic field is relative to the rotor winding (usually the squirrel cage winding), and the rotor winding induces the rotor induced current due to the electromagnetic induction principle. The rotor current produces a tangential torque under the influence of the magnetic field, so the rotor spins.

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