The high-voltage wound rotor type three-phase asynchronous motor has two voltage levels: 6KV and 10KV.
The development of this series of motors adopts advanced analysis technology, high-quality materials and scientific processing technology in the manufacturing, which make the series motors have the advantages of high efficiency, low noise, low vibration, high reliability, and convenient installation and maintenance.
Structural features
This series of motors adopt a box-type appearance, and the frame is welded by steel plates. This makes the motors have the characteristics of good rigidity and light weight. The optimized design of the motor structure also makes the series motors have the advantages of easy installation and maintenance.
The stator and rotor punching sheets are punched from low-loss non-oriented cold-rolled silicon steel sheets.
The stator adopts an external pressure structure, the stator winding adopts F-class insulating material, and the coil ends are reliably fixed and bound. After the coil ends are connected, they need to undergo an inter-turn pulse voltage test, and adopt the international advanced vacuum pressure impregnation solvent-free paint ( VPI) Process treatment.
The wound rotor is made of pure copper and adopts Class F insulation material. And after the dynamic balance check, so the motor runs smoothly and reliably.
The bearing adopts two structural forms: rolling bearing and sliding bearing, depending on the power of the motor, the mining industry and the speed.
Z4 series DC motors have greater advantages than Z2 and Z3 series. It can not only be powered by DC unit power supply, but also suitable for static rectifier power supply. Moreover, the moment of inertia is small, it has better dynamic performance, and can withstand a higher rate of load change. It is especially suitable for control systems that require smooth speed regulation, high efficiency, automatic speed stabilization, and sensitive response. It has the current international advanced level.
The rating of the motor is a continuous rating for continuous work. In areas where the altitude does not exceed 1000m and the ambient air temperature does not exceed 40°C, the motor can be rated for operation according to the data in the technical data sheet. This series of motors adopt F-class insulation.
The power range of the Z4 series DC motor is from 1.5kW to 840kW, and the rated speed is 3000, 1500, 1000, 750, 600, 500, 400, 300, 200r/min. There are nine types of excitation. The excitation method is separate excitation, and the excitation voltage is 180V. In addition to the levels specified above, other power, armature voltage, speed and excitation voltage values can be derived according to specific conditions and user needs.
For motors with a rated voltage of 160V, when powered by a single-phase bridge rectifier, they generally need to work with a reactor, and the inductance value of the external reactor is indicated on the motor nameplate. No external reactor is required for motors with rated voltage 440V.
1. Divided according to the type of power supply: it can be divided into DC motors and AC motors.
1) DC motors can be divided according to structure and working principle: brushless DC motors and brushed DC motors.
Brushed DC motors can be divided into: permanent magnet DC motors and electromagnetic DC motors.
Electromagnetic DC motors are divided into: series-excited DC motors, shunt-excited DC motors, separately-excited DC motors and compound-excited DC motors.
Permanent magnet DC motors are divided into: rare earth permanent magnet DC motors, ferrite permanent magnet DC motors and alnico permanent magnet DC motors.
2) Among them, AC motors can also be divided into: single-phase motors and three-phase motors.
2. According to the structure and working principle, it can be divided into DC motors, asynchronous motors and synchronous motors.
1) Synchronous motors can be divided into: permanent magnet synchronous motors, reluctance synchronous motors and hysteresis synchronous motors.
2) Asynchronous motors can be divided into induction motors and AC commutator motors.
Induction motors can be divided into three-phase asynchronous motors, single-phase asynchronous motors and shaded-pole asynchronous motors.
AC commutator motors can be divided into: single-phase series motors, AC and DC dual-purpose motors and repulsion motors.
3. According to the starting and operation mode, it can be divided into: capacitor-starting single-phase asynchronous motor, capacitor-operating single-phase asynchronous motor, capacitor-starting single-phase asynchronous motor and split-phase single-phase asynchronous motor.
4. According to the purpose, it can be divided into: drive motor and control motor.
1) Driving motors can be divided into: motors for electric tools (including tools for drilling, polishing, polishing, grooving, cutting, reaming, etc.), household appliances (including washing machines, electric fans, refrigerators, air conditioners, tape recorders, and video recorders) , DVD players, vacuum cleaners, cameras, hair dryers, electric shavers, etc.) and other general small mechanical equipment (including various small machine tools, small machinery, medical equipment, electronic equipment, etc.) motors.
2) Control motors are divided into stepping motors and servo motors.
5. According to the structure of the rotor, it can be divided into: cage induction motors (called squirrel cage asynchronous motors in the old standard) and wound rotor induction motors (called wound asynchronous motors in the old standard).
6. According to the operating speed, it can be divided into: high-speed motor, low-speed motor, constant-speed motor, and speed-regulating motor. Low-speed motors are divided into gear reduction motors, electromagnetic reduction motors, torque motors and claw-pole synchronous motors.
In addition to stepped constant speed motors, stepless constant speed motors, stepped variable speed motors and stepless variable speed motors, speed regulating motors can also be divided into electromagnetic speed regulating motors, DC speed regulating motors, PWM variable frequency speed regulating motors and Switched reluctance speed motor.
The rotor speed of an asynchronous motor is always slightly lower than the synchronous speed of the rotating magnetic field.
The rotor speed of the synchronous motor has nothing to do with the size of the load and always maintains the synchronous speed.
