The TK series of large three-phase synchronous motors is a high-performance product line specifically designed and developed by our company for air compressors.

These motors incorporate advanced technologies, materials, and manufacturing processes, and are meticulously selected and built. They feature a compact size, light weight, attractive appearance, high efficiency, low noise and vibration, safe and reliable operation, and ease of use and maintenance.

As large three-phase synchronous motors, the TK series is primarily used to drive large, constant-speed machinery—such as reciprocating air compressors—and finds extensive application across industries including refrigeration, chemical fertilizers, iron and steel, metallurgy, electric power, cement, petroleum, and chemicals.

This series of motors features a leading power factor (rated at 0.9 leading), which helps improve the power factor of the electrical grid; the motors are characterized by stable operation, high efficiency, and strong overload capability.

Standard specifications include a rated frequency of 50 Hz (with a 60 Hz version available as an option) and rated voltages of 380 V, 3000 V, 6000 V, and 10000 V.

These motors feature a horizontal structure and are typically of the open type. Shaft extension options include single-shaft, double-shaft, and shaftless (suspended) designs; ventilation options include ducted ventilation and explosion-proof configurations.

The excitation system utilizes a static thyristor excitation unit, and the motors support full-voltage direct-on-line starting.

Structural Description                                                                                                                                                    

This motor utilizes a widely adopted box-type structure; the frame and end shields are fabricated from welded steel plate, offering high rigidity and reduced weight. Removing the protective cover (or cooler) allows for visual inspection and maintenance of the motor's interior, facilitating installation and servicing.

The stator employs an external press-fit design. Stator windings utilize Class F insulation and corona-resistant materials; a specialized winding process ensures the winding end turns are securely anchored. The entire stator undergoes Vacuum Pressure Impregnation (VPI) with Class F solvent-free varnish. Consequently, the motor exhibits excellent, reliable insulation performance, as well as superior moisture and impact resistance.

This series of motors utilizes pedestal-mounted sleeve bearings. Standard enclosure protection ratings are IP23, IP44, and IP54; if a higher enclosure rating is required, the bearing protection rating is upgraded accordingly. Forced-circulation lubrication is typically employed; users must configure a thin-oil lubrication station in accordance with the bearing oil specifications provided by the company.

The rotor is equipped with a high-efficiency, low-noise axial-flow fan. Due to the directional nature of the airflow, the motor must rotate in the specified direction and cannot be operated in reverse.

The main terminal box features a sealed design with an IP54 protection rating. This series is designed with two identical cylindrical shaft extensions; users may select either end as the drive end.

Structural Description                                                                                                                                                

The motor utilizes a widely adopted box-type structure; the frame and end shields are fabricated from welded steel plate, offering high rigidity and light weight. Removing the protective cover (or cooler) allows for visual inspection and physical maintenance of the motor's interior, facilitating installation and servicing.

The stator employs an external press-fit structure. Stator windings utilize Class F insulation and corona-resistant materials; a special wrapping process ensures the winding end turns are securely fixed. The entire stator undergoes Vacuum Pressure Impregnation (VPI) treatment with Class F solvent-free varnish. Consequently, the motor exhibits excellent, reliable insulation performance, as well as superior moisture and impact resistance.

This series of motors utilizes pedestal-mounted sleeve bearings. Standard enclosure protection ratings are IP23, IP44, and IP54; if a higher protection rating is required for the motor, the bearing protection rating is upgraded accordingly. Forced circulation lubrication is typically employed; users must configure a thin-oil lubrication station in accordance with the bearing oil specifications provided by the company.

The rotor is equipped with a high-efficiency, low-noise axial-flow fan. Due to the directional nature of the airflow, the motor must rotate in the specified direction and cannot be reversed.

The main terminal box features a sealed design with an IP54 protection rating. This series is designed with two cylindrical shaft extensions of identical dimensions; users may select either end as the drive end.

Basic Technical Parameters                                                                                                                                            

Power range: 250–10,000 kW

Rated voltage: 6,000 V, 10,000 V

Rated speed: 250, 273, 300, 333, 375, 428, 500, 600 rpm

Rated frequency: 50 Hz

Protection class: IP00, IP20, IP23, IP44

Insulation class: F

Duty type: S1

Cooling method: IC01, IC37, IC81W

Mounting arrangement: IM7311, IM5710, IM7312, IM7315

*Other parameters can be customized according to user requirements.

Ordering Information                                                                                                                                                      

Please provide the following details when ordering:

(1) Motor Model: YK5000-2/1430

(2) Rated Frequency: 50 Hz

(3) Rated Power: 5000 kW

(4) Rated Voltage: 10 kV

(5) Number of Poles: 2-pole

(6) Cooling Method: IC01

(7) Mounting Arrangement: IM7212

(8) Protection Rating: IP23

(9) Direction of Rotation: Clockwise (viewed from the shaft extension end)

(10) Terminal Box Position: Right side of the motor (viewed from the shaft extension end)

(11) Requirements for space heaters, temperature sensing elements, etc.

Raw Materials                                                                                                                                                                          

Frame: Cast iron, steel

Stator: Copper

Rotor: Copper/Aluminum

Shaft: 45# steel

Bearings: SKF or equivalent

Each motor must undergo testing before leaving the factory. Motors may only be shipped after passing inspection. A test report will be included with each motor.