YZTD 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:: 10000 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, CE

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:What subjects should be included in the purchase of ac contacts and motors?: What subjects should be included in the purchase of ac contacts and motors? The purchase of ac contacts and motors, which can be used as production auxiliary materials, should be accounted for by raw materials and auxiliary materials.

Q:What are the main parts of alternators?: 2) of the stator and the armature, the main function is to produce three phase alternating current (ac). It consists of a core and three phase winding. Insulation of stator core consists of five phase within the circle of the grooved ring silicon steel sheet pile, the stator slot around the three-phase symmetric winding, as a star connection. x0d

Q:Why does the motor need capacitance when the machine starts?: Only single phase ac motor USES capacitance, dc motor and three-phase ac motor do not need. The two single-phase motor coil does not produce a rotating magnetic field, must be in one of the series capacitance on the coil, make this branch of the current in another coil current in advance, the ability in a rotating magnetic field between the two coils, rotor rotation.

Q:How does dc motor change ac motor: But between dc motor and ac motor can't convert each other, this is because their manufacturing process and machine structure is different, the design from the start then can not be changed, unless you have taken apart the motor to have done

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 ac servo motor change direction?: Change the servo motor parameters, such as the mitsubishi j3-a column, the PA_14 parameter

Q:Do you start the coils when you are communicating?: There are many kinds of single phase ac motor, such as capacitance shingles, resistors, electric motors, and "swinging" motors.

Q:60W regular ac motor needs to be fast and slow before stopping, how to control?: You want to know how fast you're talking, how long does it take to stop the process and how long does it take to complete the process?

Q:Single phase capacitor ac motor speed regulation why does not have corresponding frequency converter: It is suitable for low load, such as fan, blower, exhaust fan, etc. The voltage is reduced, the strength of the winding is reduced, the rate of change increases, and the speed decreases. If the load is larger, the voltage is reduced by the lower voltage, and the power of the motor is reduced, and the coil is likely to be overcharged and the coil is hot and burnt. A fan without a speed governor is more than one way of controlling silicon.

Q:The vector control ac motor drive is the converter?: The basic principle of vector control is through the measurement and control of asynchronous motor stator current vector, according to the principle of magnetic field orientation respectively excitation current and torque current of asynchronous motor to control, so as to achieve the goal of control of asynchronous motor torque. Concrete is causes asynchronous motor stator current vector is decomposed into the current component of the magnetic field (excitation current and torque current component of current (torque) control respectively, and at the same time control the amplitude and phase between the two components, namely the stator current vector control, so that the control method called vector control mode. Concrete is causes asynchronous motor stator current vector is decomposed into the current component of the magnetic field (excitation current and torque current component of current (torque) control respectively, and at the same time control the amplitude and phase between the two components, namely the stator current vector control, so that the control method called vector control mode.

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