PUTAI YRKK 11kV Motors are three-phase wound-rotor induction motors for heavy-duty industrial drives. They serve equipment OEMs, industrial distributors, project integrators and plant operators in new installations, equipment integration and motor replacement projects.
Technical Specifications
|
Parameter |
Specification |
|
Motor Type |
Three-Phase Wound-Rotor Induction Motor |
|
Rated Voltage |
11 kV |
|
Series Power Range |
160–9,000 kW |
|
Frame Size |
H355–H1120 |
|
Series Voltage Options |
3, 3.3, 4.16, 6, 6.6, 10, 11 kV |
|
Frequency |
50 / 60 Hz |
|
Number of Poles |
2, 4, 6, 8, 10, 12, 16 |
|
Listed Speeds |
3000, 1500, 1000, 750, 600, 500, 370 rpm |
|
Cooling |
IC611 / IC616 / IC666 |
|
Protection |
IP54 / IP55 |
|
Insulation Class |
F / H |
|
Mounting |
B3 / V1 |
|
Duty |
S1 / S4 / S5 / S6 / S9 |
Key Design Features
Wound-Rotor Starting: The wound-rotor design allows external rotor resistance to support starting torque and current control, making it suitable for demanding starting conditions.
Welded Steel Frame: The box-type welded steel frame provides a structural basis for large motor assemblies and industrial installation requirements.
Project-Specific Configurations: Voltage, power, cooling, protection and mounting options can be specified to meet the requirements of the intended drive system.
Typical Applications
Mining and Mineral Processing: Drives for crushers and heavy-duty belt conveyors, where starting conditions and load characteristics are important to drive performance.
Oilfield and Hydraulic Systems: Used for large pumps and related equipment requiring dependable motor operation under demanding industrial conditions.
Compressed-Air Systems: Suitable for large industrial compressors where starting requirements and operating load must be considered alongside the driven equipment.
Steel and Metallurgy: Supports material-handling and other heavy industrial drives used in steel production and metallurgical plants.
Power Generation: Used for auxiliary pumps and fans in power plants, with motor configuration matched to the equipment and operating conditions.
Chemical and Process Industries: Drives large pumps, fans and compressors in process systems where installation conditions and continuous operation requirements matter.
Water Handling: Suitable for large industrial water-supply and handling pumps, with attention to load, starting method and site conditions.

Air compressor-YRKK slip ring motor

Crusher-YRKK slip ring motor

Hydraulic pump-YRKK slip ring motor

Oilfield-YRKK slip ring motor
Production process



OEM Supply and Replacement Matching
For OEM Equipment Manufacturers
For new equipment integration, provide the driven equipment type, load characteristics, starting method, supply voltage, frequency and operating duty. Installation dimensions, shaft interfaces, mounting arrangement, cooling, protection and required accessories should also be defined to align the motor with the complete machine.
For Replacement and Retrofit Projects
For an existing motor replacement, provide the nameplate, motor photographs and available drawings. Useful matching information includes rated power and voltage, speed, frame and mounting dimensions, shaft and coupling details, rotation direction, starter and rotor-resistance arrangement, cooling method, protection rating and site environment. Existing operating issues can also help identify relevant replacement requirements.
For Industrial Distributors
Distributors can provide the end user's application, electrical ratings, installation requirements and replacement details to support product matching. For project coordination, identify the required technical documents, accessories and inspection scope at the inquiry stage.
Manufacturing Capability
PUTAI's company profile reports a 200,000 m² production plant, RMB 80 million in fixed assets and more than 120 employees, including 18 technical engineers, with over 25 years of motor industry experience.
The manufacturing process includes silicon-steel preparation, copper winding, insulation processing, vacuum pressure impregnation (VPI) and drying, assembly, and testing before dispatch. These figures describe the company's overall resources and experience rather than YRKK-series-specific production capacity.
Quality Control
Inspection requirements should be defined according to the project and agreed order. Depending on the specified scope, quality checks may include electrical and performance testing, mechanical and dimensional verification, and checks of mounting, shaft and connection interfaces.
The required inspection records and delivery documents should be agreed before production. Customer witness inspections can also be arranged when included in the project requirements.
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