11KW YZTDseries for tower crane changing- poles multi -speed three-phase motor for tower crane
- Ref Price:
-
- 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.
- Q:How the ac motor works
- The principle of ac motors: the coils spin in the magnetic field. Do you know the principle of direct current electromotor? Dc motor commutator is used to automatically change the direction of the current in the coil, so that the coil stress direction is consistent and continuous rotation. So as long as the guarantee coil stress direction is consistent, continuous rotary motor will be. Ac motor is the application of this.
- Q:How do ac motor maintenance and maintenance?
- electrical 1, the winding resistance equilibrium, 2, alternate insulation, 3, the winding is insulated from the earth, 4, is the terminal block loose or not, Whether the running current is normal, 5, what is the temperature rise at run time? Mechanical aspects 1, bearing noise, 2, the bearing temperature rise, The dust of the motor case should be cleaned regularly.
- Q:Which is better for dc speed regulating motor and ac converter?
- The more power of the frequency conversion, the drive effect is better, because the dc speed adjustment is to lower the voltage to the lower voltage, and the resulting loss. The voltage is constant in frequency conversion, and of course there is no loss of pressure. It's cheaper to invest in dc in the first place.
- Q:Does the step motor belong to ac motor or dc motor?
- Step motor should be ac motor, and stepper motor is an actuator which converts electrical pulse into angular displacement. Popular point: when the stepper driver receives a pulse signal, it is driving a stepper motor according to set the direction of a fixed Angle (and the step Angle). You can control the amount of angular displacement by controlling the number of pulses, so that the target is accurate. At the same time, you can control the speed and acceleration of the motor by controlling the pulse frequency.
- Q:How does ac motor speed control
- The rated speed n = 60f/p (1-s) = synchronous speed of N1 (1-s) f power frequency The speed adjustment of the power frequency is changed by using the frequency converter, the speed adjustment range is large, the stability is smooth and the mechanical properties are hard. This is the reduction in the nominal load speed. It belongs to stepless speed adjustment. Suitable for most three-phase squirrel cage asynchronous motor. The speed adjustment of the magnetic pole is changed, it is the speed adjustment, the speed adjustment is poor, and it is commonly used for metal cutting machine tool. Change the speed adjustment. (1) rotor circuit resistance: used for ac winding asynchronous motor. The speed of adjustment is small, the resistance has to consume power, the motor is inefficient. It is used for cranes. (2) it changes the voltage regulation of the power supply, the speed adjustment is small, the torque decreases greatly with the voltage drop, and the three-phase machine is not used. For single-phase motor speed adjustment, such as fan searching. (3) a series of speed adjustment, the essence is that the rotor introduces additional electromotive force, and changes its size to speed adjustment. It is also used only for winding motor, but efficiency is improved.
- Q:What is an ac driver? And the principle! Thank you very much!
- Motor servo ac motor drive is also called the implementation, in the automatic control system, is used as actuators, converts the received electrical signal into angular displacement or velocity of motor shaft output. Divided into two major categories of dc and ac servo motor, its main characteristic is, when the signal voltage is zero no rotation, speed decreases with the increase of torque and uniform, Servo actuator is the control part of servo motor.
- Q:When the ac servo motor is turned off, the rotor shaft is tight
- When the ac servo motor is out of power, the shaft of the rotor shaft is very tight: Since the servo motor is the brake device, the motor is not moving when the power is off. If there is no brake device, it indicates that the load is not installed properly, which can cause rotational difficulty. Solution: loosen the load and turn the motor separately.
- Q:Why do elevator door motors use dc instead of ac?
- Because the dc voltage is more stable.Dc voltage reliability and stability are high.
- Q:How do ac motors keep moving in the same direction?
- Most of the ac motor rotor is not current, power is in the little excitation current of synchronous motor synchronous runtime. Running in the rotor is current, this is in a rotating magnetic field induced current, the rotation of the rotor is also want to rely on the induced current, this is because the wire out of the current is induced in a rotating magnetic field, and wire in the magnetic field force, thus the rotor to turn up, until than the speed of the rotating magnetic field of the lower speed stability, this is the principle of asynchronous motor, so as long as the rotating magnetic field to the same, the motor to the same, how to obtain a rotating magnetic field, a direct current is not, the formation of the three-phase alternating current (ac) is itself a generator stator induced current in the rotor rotating magnetic field, so as long as he is input into the coil on the difference of 120 degrees, can be formed on the stator rotating magnetic field, single phase is somewhat hard to understand, but if you can put the sinusoidal magnetic field is decomposed into two same size changes, in the opposite direction of the synthesis of two rotating magnetic field results, as long as the rotor turns up later, and two the relative speed of the rotating magnetic field induced by the electric current cannot be integrated to zero, still can go up, just start up more troublesome.
- Q:Ac motor speed control method
- You can change the frequency, you can change the logarithm of the magnetic pole, and you can change the difference in three ways
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11KW YZTDseries for tower crane changing- poles multi -speed three-phase motor for tower crane
- Ref Price:
-
- Loading Port:
- Qingdao
- Payment Terms:
- TT OR LC
- Min Order Qty:
- 1 set
- Supply Capability:
- 1000 set/month
OKorder Service Pledge
Quality Product, Order Online Tracking, Timely Delivery
OKorder Financial Service
Credit Rating, Credit Services, Credit Purchasing
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