11KW YZTDseries for tower crane changing- poles multi -speed three-phase motor for tower crane

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Loading Port:: Qingdao

Payment Terms:: TT OR LC

Min Order Qty:: 1 set

Supply Capability:: 1000 set/month

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Packaging & Delivery

Packaging Details: Carton/ Wooden box or according to customer's requirement

Delivery Detail: Within 20 days after30% deposit

Prompt Quotation, Competitive Price
100%tested, Guaranteed Quality, 100% copper wire, Cold-rolled silicon steel sheet
Good performance.
Energy saving ,Long working life .
motor with ISO9002-2000, CCC

YZTD Series is specially developed for tower crane and other construction machinery electric drives. It is up to the demand of national standard GB755-87"the bisic technology demand of rotary electric motor"and industrial standard"YZTD variable poles multi speed three-phase motor for tower crane". the product's features are high speed ratio, low starting current, high starting torque, strong overload capacity, simply operation and convenient maintennance,etc.

Detailed information:

Power range: 0.5-315kw.
Poles: 4//16/24.
Protecting level: IP44/IP54
Cooling way: IC411.
Installation way: B3 or customization.
Rated voltage: 380v / 440v.
Rated frequency: 50Hz/ 60Hz.
working method: high speed, medium speed S3-40%, low speed S3-25%.
Working temperature: F:-20°c to 40°c, H: -20°c to 60°c .
Altitude: lower than 1000m.
Addition: Can be made according to your requirements

Features:

High efficiency and low energy consumption.
Low noise and vibrate.
Simple operation.
Easy maintenance.

11KW YZTDseries for tower crane changing- poles multi -speed three-phase motor for tower crane

Q: What is the general ac motor in electrical design?: Such as cooling fan, slurry pump and circulating pump units have special requirements, usually with a soft start and frequency converter (larger use 660 v, slightly smaller use 380 v) to control.

Q: Single phase synchronous alternator working principle: Without dc voltage on the brush, constant speed by prime mover drag the armature to counterclockwise rotation, on both sides of the coil is cutting lines of magnetic force under different magnetic polarity, respectively, in which the induction electromotive force, electromotive force direction determined by the right-hand rule. This electromagnetic situation is shown on the graph. Due to the armature rotate continuously, and, therefore, must take the current carrying conductor in magnetic field from the coil side ab and CD alternately cutting lines under the N pole and S pole, although each side of coil and the coil in the direction of induction electromotive force is alternating. Induction electromotive force in the coil is A kind of alternating electromotive force, and in the brush. A, B side electromotive force for dc electromotive force (some say exactly, is A kind of direction invariable pulse vibration electromotive force). Because, the armature in the rotation process, no matter the armature turn to what position, due to the effect of the reversing of the commutator with brush, brush A by commutator segment of electromotive force always is the cutting edge of electromotive force by the coil in N pole magnetic field lines, therefore, brush A always have A positive polarity. In the same way, the brush B has always negative polarity, so the brush can lead to the same change in the direction of the pulse. If the number of coils per pole increases, the pulse vibration decreases, and the dc electromotive force can be obtained. That's how the dc generator works. It also shows that the zidc generator is essentially an ac generator with a commutator.

Q: How does the three-phase ac motor achieve constant power or constant torque output: Is generally frequency converter to realize, in the power supply of power frequency 50 hz, motor with frequency converter to belt, the inverter output below 50 hz, the motor is constant torque output, but in the inverter output above 50 hz, the motor is constant power output

Q: What is the difference between the excitation winding of ac motor and the armature winding?: Exciting winding is the excitation winding magnetic field, the armature winding is the ac electrical output winding, for dc excitation synchronous generator excitation winding is the generator rotor winding, armature winding of generator stator winding.

Q: Why is dc motor less efficient than ac motor: It is. Ac motor is complex but relatively simple, and is easier to maintain than dc motor. The dc motor introduces the current to the rotor armature through the brush and the commutator, so that the rotor can force the force in the stator field. Ac motor (commonly used ac asynchronous motor, for example) is to put the ac electric flux into the stator winding, thus in the rotor creates a rotating magnetic field in air gap, rotating magnetic field in the rotor winding induced current, which make the rotor spinning force produced in the stator magnetic field.

Q: Why does a single motor have a series of capacitors: As we all know, the rotation of the ac motor on electric current produced by a rotating magnetic field, and single-phase motor is different from the three-phase motor, three-phase motor through 120 degrees is the difference in phase and three phase current, can produce a rotating magnetic field; And single phase motors through the single phase current does not produce a rotating magnetic field, need to take some methods to make it produce a rotating magnetic field, using capacitance is one method, which is the most common method, capacitance is used to split phase, the purpose is to make two spare set of the current produce nearly 90 ゜ phase difference, in order to produce a rotating magnetic field.

Q: What is the control speed for ac servo motors?: It is estimated that you should use an external pulse control servo driver, and you can control the speed of the servo motor by controlling the frequency of the servo drive pulse. Japanese general maximum speed corresponding to the pulse frequency of 500 k by the proportion relation, you change your pulse output frequency of the controller, to control the speed of the servo motor.

Q: Ac asynchronous generator principle: Generator up the machine is provided by an external source excitation current, after reaching the rated speed will be separated from the bus part of exciting current, but is 10 kv / 20 kv bus voltage, and then after excitation variable step-down rectifier once again return to the rotor 2.... (sorry, forget the synchronous speed), the magnetic induction of the stator are the induced electromotive force on the rotor line on the stator winding cutting (relative is the conductor in cutting the magnetic induction line) immortality induced current 1 year without touch, if there is a false appreciation to correct, decline the spray son O

Q: What is the power of ac motor: Two phase 380V ac motor: the rated power of the two phase 380V ac motor is the rated voltage by the rated voltage (s)