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YKK Series High-Voltage Three-Phase Asynchronous Motors Covering frame sizes from 355 mm to 1120 mm, the YKK series high-voltage three-phase asynchronous motors are independently developed by our company after assimilating advanced domestic and international technologies. We employ cutting-edge field analysis technology for electromagnetic computation, with precise calculation and optimized design for power losses, wind resistance and structural strength of every single component. Supported by a mature and stable design & production system, as well as over 70 years of experience in manufacturing medium and large high-voltage AC motors, this series is fabricated with premium raw materials and rigorous machining processes. The motors feature high efficiency, low noise, minimal vibration, outstanding operational reliability, plus convenient installation and maintenance. This motor series is widely matched with general industrial machinery including fans, pumps, compressors, crushers, chip removal machines and conveying equipment, serving petroleum, chemical, coal, power plant, metallurgical, transportation, textile, pharmaceutical and grain processing sectors. II. Advantages & Technical Features Drawing on domestic and overseas advanced technologies, we adopt field-circuit coupled electromagnetic design for the YKK series. This method greatly improves electromagnetic calculation accuracy and outputs precise maximum torque multiple values, fully securing excellent overload capacity of the motors. Finite Element Method (FEM) mechanical analysis is applied throughout structural design and continuously validated by practical operation data. Accurate boundary conditions are set for mechanical models to optimize material utilization and effectively suppress motor vibration and noise. Meanwhile, FEM analysis is compatible with all cooling types and delivers high-precision, visualized airflow distribution simulation. It enhances the accuracy of temperature rise calculation during design, cuts ventilation losses and raises the overall energy efficiency of the motors.
The YKK series consists of heavy-duty, high-efficiency high-voltage squirrel cage induction motors independently developed by Changli Electric. Optimized via advanced electromagnetic field simulation and FEM mechanical analysis, this motor line delivers outstanding performance for numerous industrial sectors including petrochemical, cement, steel, mining and power generation.
Drawing on more than 70 years of professional motor manufacturing experience, our YKK motors are engineered for long service life, low noise, minimal vibration and strong overload resistance. They serve as reliable driving solutions for brand-new machinery and equipment retrofits alike.
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The YKK (AMI) high-voltage three-phase asynchronous motors cover frame sizes from 355 mm to 1120 mm. We developed this series by integrating mature advanced domestic and international technologies. Modern field analysis tools are adopted for precise electromagnetic computation, while every component is finely calculated and optimally designed to cut power loss, lower wind resistance and boost structural strength.
Supported by a stable, proven design and production system and our decades of experience in medium & large high-voltage AC motor production, the motors are manufactured with premium raw materials and precise machining workflows. Core strengths include high efficiency, low noise, low vibration, excellent operational stability and straightforward installation & maintenance.
They are widely applied to drive standard industrial equipment such as fans, pumps, compressors, crushers, chip removal machines and conveyors for petroleum, chemical, coal, power plant, metallurgical, transportation, textile, pharmaceutical and grain processing industries.
YKK series motors are extensively adopted in industries demanding stable high-voltage operation:
All measuring tools and test instruments receive annual calibration.
Each motor undergoes full-range strict quality inspection and process monitoring.
| Name | Inspection item |
| Coil | 1. Physical and chemical tests for raw materials |
| 2. Coil winding process inspection | |
| 3. Winding dimension inspection | |
| Iron Core | 1. Physical and chemical test report for silicon steel sheet material |
| 2. Lamination burrs and paint film inspection | |
| 3. Dimensional inspection of laminated steel sheet | |
| Frame | 1.Cold welding parts conformity certificate |
| 2. Finish machining inspection | |
| Rotor | 1. Rotor core lamination inspection |
| 2. Conducting bar welding | |
| 3. Check the material, appearance, conductivity and size of the conducting bar end ring | |
| 4. Check the fastening of the conducting bars in the slots | |
| 5. Dimensional check, including iron core outer diameter | |
| 6. Dynamic balance correction | |
| Shaft | 1. Raw material , annealing check |
| 2 Finish machining check | |
| Stator | 1. Iron core compactness check |
| 2. Check iron core length and section length | |
| 3 Inserting winding check | |
| 4. Iron consumption check | |
| Assembly | 1. Plain bearing size and surface quality check |
| 2. Check the size of the air gap, the coincidence of the axial centerline of the stator and rotor core, the gap of inner fan and windshield | |
| 3 Cleaning check inside the motor | |
| 4 Shaft center height and installation size check | |
| Test | 1. Routine test |
| 2. Type test |
Test Items
Each motor must be tested before leaving the factory. Only all the items are qualified, can the motor be delivered. Each motor will have a test report.
| Routine test items | Type test items |
| Winding three-phase DC resistance | Full load input power |
| Winding insulation resistance to ground | Full load current |
| Winding withstand voltage test | Stator winding loss |
| No-load current | Rotor winding loss |
| No-load power | Iron loss |
| No-load loss | Mechanical loss |
| Three-phase no-load current imbalance | Other losses |
| Locked rotor current | Full-load slip ratio |
| Locked rotor torque | Stator winding temperature rise |
| Maximum torque | Bearing temperature |
| Rotation direction | Thermal winding insulation resistance |
| Vibration: horizontal, vertical, axial | Overload test |
| Noise | Full-load power factor |
| ... | Efticiency |
| ... |
Standard total coating thickness is 120 microns, composed of a 40-micron primer coat and an 80-micron topcoat.
Our certified professional coating technicians can formulate and apply any custom color as requested by customers.
Standard export-grade seaworthy packaging is provided.
Available options include plywood crates or fumigated wooden cases, ideal for long-distance ocean shipping.
Standard warranty coverage lasts 12 months after equipment commissioning or 18 months following shipment, whichever occurs earlier.
For extended warranty solutions, kindly contact our team for further information.
Y2HV Series High-Voltage 3-Phase Asynchronous Motors (Frame Sizes 355–630 mm) are developed by integrating German technology with our rich experience in manufacturing high-voltage flameproof motors. Adopting advanced new processes and premium selected raw materials, this product line delivers high-efficiency performance. Featuring stable and reliable operation, compact structure, low vibration, low noise, lightweight design and outdoor adaptability, these motors meet China’s National Grade 3 Energy Efficiency Standard. Certified for Zone 1 and Zone 2 hazardous locations with explosive gas atmospheres, they act as versatile prime movers widely deployed in mining, general machinery, petrochemical, power plant and other industries to drive various common equipment including compressors, pumps, crushers, winches, centrifuges, scrap shredders, cutting machines and belt conveyors, making them an ideal general drive solution.
Revised Version (same meaning, professional industrial English, smoother & less Chinglish) Developed by integrating mature domestic and international technologies, the Y and YKK series high-voltage three-phase asynchronous motors cover frame sizes ranging from 355 mm to 1120 mm. We adopt cutting-edge electromagnetic field analysis simulation for precise computation, carrying out refined calculation and optimized design for power loss, wind resistance and structural strength of every motor component. Backed by a stable, proven design and production system alongside over 70 years of experience manufacturing medium and large high-voltage AC motors, these motors are produced with premium raw materials and standardized precision machining processes. They deliver outstanding comprehensive performance including high energy efficiency, low noise, slight vibration, reliable operation, as well as simple installation and convenient routine maintenance.
Developed in-house after absorbing advanced design and manufacturing techniques from US Westinghouse and German LDW, our optimized YL Series vertical three-phase asynchronous motors benefit from over seven decades of our high-voltage motor development experience. Split into YLKK and YLKS subseries with separate cooling configurations, they can fully accommodate customized cooling requirements for different applications.
Developed by Changli through in-depth R&D and technology absorption from Westinghouse (USA) and LDW (Germany), the YR Series Wound Rotor Three-Phase Asynchronous Motors represent a premium advanced motor lineup. Boasting more than 70 years of experience in high-voltage motor design and production, we integrate world-leading international technologies with our mature proprietary expertise to manufacture long-lasting, high-performance motor products. The series comes in two cooling type submodels: YRKK and YRKS. Customized to satisfy various industrial cooling demands, they deliver outstanding versatility and stable reliability across a full spectrum of working scenarios.
Y, YKK Series High-Voltage Three-Phase Asynchronous Motors Covering frame sizes ranging from 355 mm to 1120 mm, the Y and YKK series high-voltage three-phase asynchronous motors are self-developed premium products of our company. We integrate state-of-the-art domestic and international technologies and deploy modern field analysis technology to carry out accurate electromagnetic computation. Every component undergoes optimized design with meticulous calibration of power loss, wind resistance and structural strength. With more than 70 years of expertise in producing medium and large high-voltage AC motors, paired with a mature, stable design and production system, we manufacture this series using premium raw materials and standardized processing techniques. The motors deliver prominent strengths including high efficiency, low noise, low vibration, outstanding operational dependability, plus simple installation and convenient maintenance.
Y, YKK series high-voltage three-phase asynchronous motors (frame size 355~1120mm) are a series of products developed by our company by introducing advanced technology at home and abroad, adopting modern advanced field analysis technology for electromagnetic calculation, and making fine calculation and optimal design for various losses, wind resistance and strength of each component of the motor. The series of products are developed through mature and reliable design and production system, combined with more than seventy years of experience in manufacturing medium and large high-voltage AC motors; with high-quality materials and scientific processing technology in manufacturing, the motors have the advantages of high efficiency, low noise, low vibration, high reliability and easy installation and maintenance.
Polished Professional Version (for product catalog) A4 Series and Y Series high voltage induction motors enjoy extensive application across multiple industries, including cement plants, mines, steelworks, metallurgical facilities, chemical factories, oil & gas industries and more. We are capable of manufacturing and customizing A4 Series three-phase asynchronous motors fully compliant with GOST standards. Technical Parameters Frame size: 355 mm – 1120 mm Power range: 220 kW ~ 12500 kW Poles: 2 – 16 poles Rated voltage: 3300 V, 4160 V, 6000 V, 6300 V, 6600 V, 10000 V, 11000 V, 13200 V Rated frequency: 50 Hz Protection class: IP23 Cooling method: IC01 Mounting arrangement: IC01 Rotation direction: Clockwise (CW) / Counter-clockwise (CCW) Minor corrections & optimization notes minings → mines; metallurgic plants → metallurgical facilities / metallurgical plants Standard unit format: kW, Hz, V with consistent spacing Fixed typo 132000V to 13200V (likely input slip error) Distinguished Cooling / Mounting with standard industry terms "method / arrangement" Rewrote stiff sentence "in conformity with" to natural industrial wording "fully compliant with" Removed redundant "etc." after listing complete major industries
Frame size: 355 mm ~ 1120 mm Power: 200 kW ~ 20 MW Number of poles: 2 ~ 16 poles Rated voltage: 3300 V, 4160 V, 6000 V, 6300 V, 6600 V, 10000 V, 11000 V, 13200 V Rated frequency: 50 Hz Protection degree: IP23 Cooling method: IC01 Mounting arrangement: IM1001 Rotation direction: Bi-directional
Founded in 1946, Changsha Changli Electric Co., Ltd. is a leading electric motor factory and a TOP 10 electric motor manufacturer in China. We manufacture and deliver asynchronous motors with squirrel cage or slip ring rotors, synchronous motors, explosion proof motors, tailor-made motors, etc. Power output: 0.55KW to 20MW Voltage: 380V to 13.8KV Frame size: 80mm to 1120mm
