Synchronous Motor For Mine Mill

The synchronous motor for mine mill are large motors for mining mills.

Why use TDMK series synchronous motors in mines?
1. Mines use large equipment, such as grinding mills, which place very high demands on motors, such as high torque and low vibration.
2. Mining environments are characterized by high dust, humidity, vibration, and confined spaces, placing stringent demands on the motor's structural strength and protection capabilities. TDMK series synchronous motors meet these requirements.
3. Furthermore, even a single hour of equipment downtime in mines can result in tens of thousands of yuan in losses. Therefore, motors with excellent continuous operation performance are essential.

Therefore, synchronous motor for mine mill with its combined advantages of power matching, environmental tolerance, stable operation, and high efficiency and energy saving, has become the preferred drive solution for heavy mining equipment.

Voltage level A series of motor specifications are available in various voltage levels, from 3kV to 11kV.
The motors can be started directly at full voltage or with reduced voltage soft starting.
Power range: 400-15000kW
Number of poles: 60,48,40,36,32,30,24,20
Synchronous speed 100,125,150,167,187.5,200,250,300r/min
Frame 4250,3250,2900,2600,2150,1730
Frequency 50/60Hz and variable frequency
Cooling method IC01,IC37,IC81W
Protection level IP00,IP20,IP21,IP23,IP44,IP54,IP55
Structure and installation type IM7311
Standard IEC, GB
Motors are categorized into two types: those with a punched shaft and those without. Punched shaft motors require a pneumatic clutch.
Motors with a punched shaft have superior starting performance.
At rated voltage Starting torque multiplier: 1.7 (0.6 when the shaft is drilled)
Pull-in torque multiplier: 1.0 (0.6 when the shaft is drilled)
Stall torque multiplier: 2.0
Starting current multiplier: 7.0
This motor features a compact structure, high efficiency, strong overload capacity, low vibration, and easy installation and maintenance. Traditional motors with direct-drive gear couplings have high stall torque, requiring them to directly start a ball mill under load. This results in high stall current and high requirements for the user's power grid. The synchronous motor for mine mill, with an air clutch coupling, features a through hole in the center of the shaft and a compressed air connection flange at the end. This reduces stall current and reduces power grid requirements. The main motor utilizes pedestal bearings and is mounted on a base frame, with wiring exiting from the bottom of the motor.

The stator core is constructed from high-quality silicon steel sheets, punched and laminated. The base is a welded steel plate structure. The entire unit has Class F insulation, and the stator windings utilize vacuum pressure impregnation (VPI) varnishing technology.

The rotor pole core is punched and laminated from high-quality steel plates, while the pole windings are wound with copper busbar. The pole coils are insulated from the ground using a hot-dip varnishing process. The individual poles are treated with VPI vacuum pressure impregnation, significantly enhancing the coils' resistance to moisture and mildew. The poles are secured to the rotor bracket's yoke with high-strength bolts. The yoke is a welded steel plate structure, with the inner ring of the yoke transmitting torque to the main shaft through interference fit. Motors with air clutch couplings require a through-hole in the main shaft for compressed air.

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