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: How does the motor select ac contactor: How is the wiring of an open, overheated relay, an open, overheating relay machine? The circuit breaker, the thermal relay? How to according to the power of motor, considering the voltage rating of the motor, electrical wiring, circuit breaker, thermal relay Three-phase motor, two hundred and twenty mw three point five amps. It is usually three hundred eight motors, one kilowatt and two ampere. Low pressure 66th motor, kilowatt hour two amperes. High voltage 3 kilovolt motor, 4 kilowatt ampere. High pressure 6 kilovolt motor, 8 kilowatt per ampere. A three-phase motor, in addition to the know the rated voltage, also must know its rated power and rated current, such as: a three-phase asynchronous motor, 7.5 KW, 4 pole (commonly used generally there are 2, 4, 6 class, series is not the same, the difference was the rated current), the rated circuit is about 15 a

Q: The structural difference between ac motor and dc motor: Rotor (2) : part of the rotor is the key to master, there are two kinds of rotor, squirrel cage and wound rotor. To master their own characteristics and differences. Cage type used for medium and small power motor (below 100 k), he has simple structure, reliable work, convenient in operation and maintenance. Wound rotor can improve startup performance and adjust the speed, size of air gap between the stator and rotor, will affect the performance of the motor, the general thickness of air gap between 0.2 1.5 mm. Grasp the connection method of stator winding. 2. The working principle of three phase asynchronous motor Master formula n1 = 60 f/P, S = (n1 - n)/n1, n = (1 - S) 60 f/P, at the same time understand the meaning of their (very important), to be able to apply these formulas, to calculate. At the same time, remember: usually motor slip under rated load of SN is about 0.01-0.06. Examples of the book to grasp key. 3. The data on the three-phase asynchronous motor nameplate models: (1) master the example of the book.

Q: How does ac motor winding be classified?: There are many kinds of ac motor winding, which are divided by phase and single phase and three-phase winding. It has a single layer winding and a two-layer winding. The single layer winding is the same type, single chain, cross chain and cross. Double layer winding and wave winding; The number of slots in each phase of each phase is an integer or a fraction, and there are two forms of slot and fraction. But the principles of the winding are consistent.

Q: How does the ac motor in soybean milk machine speed up?: The two, three, and five are relays, which control the motor switch with the amplifiers of the triode, only two gears, and there is no difference in speed. Soybean milk machine speed control is through the pressure control of series electric component, this circuit diagram does not have this kind of setting, on the manual of the shanzhai products are generally not complete, in fact there is no speed difference, just play when dried beans will be loud, it sounds like a high speed.

Q: The structure of the ac motor: The ac motor is composed of a stator winding that generates a magnetic field and a stator winding and a rotating armature or rotor. An electric motor is made from the phenomenon of force rotation in the magnetic field. Ac motor consists of stator and rotor and the stator and the rotor is to use the same power supply, so the direction of the current in the stator and rotor changes always synchronized, the coil in the direction of current changed, became the current in the electromagnet direction at the same time, according to the left hand rule, magnetic coil suffered direction invariable, the coil can continue to turn down.

Q: What are the advantages and disadvantages of synchronous motor and asynchronous motor?: However, due to the high cost of synchronous motor and large maintenance, the capacitance compensation power factor is now used. In addition, some early transducers with thyristor, because the device has no self-closing ability, need to rely on the load exchange, which requires the synchronous motor. N synchronous motor is slightly higher than asynchronous motor. When choosing type of motor in 2000KW, it is important to consider whether to use synchronous motor. Synchronous machine, however, because of the exciting winding and the slip ring, need operation workers have higher level to control excitation, in addition, compared to the induction motor of free maintenance, maintenance workload is bigger; So now the motors under 2500KW are now mostly asynchronous motors.

Q: Why not use a commutator?: Because the dc motor changes the direction of the current through the commutator and the coil keeps rotating

Q: Juicer, dc motor or ac induction machine?: The dc motor will not be powered by 220 V dc power supply, usually low voltage dc motor, controlled by electronic circuit.

Q: Ac motor power frequency conversion: Ac motor variable frequency control Inverter is the application of frequency conversion technology and microelectronic technology, by changing the frequency and amplitude of motor power to control ac motor power transmission components. The characteristics of ac motor speed converter: the low-frequency torque output 180%, the low-frequency running characteristics are good

Q: Soybean milk machine ac motor or dc motor: Soybean milk machine motor and other small appliances chooses to supply the power source is communication, but into the motor coil is used through commutator after dc, the dc motor also includes excitation coil. It is not economical and unrealistic to use dc motors directly under current power systems. "Ac motor" is a machine used to realize mechanical energy and exchange electrical energy. Ac motor has become the most commonly used electric motor due to the huge development of ac power system. Compared to the ac motor and dc motor, with no commutator (see dc motor commutator), so the simple structure, easy fabrication, quite strong, easy to make a high speed, high voltage, high current, the large capacity motor. Ac motor power covers a wide range, ranging from a few watts to several hundred thousand kilowatts and even a million kilowatts. In the early 1980s, the largest turbine generator was 1.5 million kilowatts. [1-2] ac motor was invented by the American Serbian scientist nikola tesla.

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