English
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.
Product Overview
Developed with introduced German technology and drawing on our extensive experience in high-voltage flameproof motor production, the Y2HV Series high-voltage 3-phase asynchronous motors (frame sizes 355–630 mm) are built as high-efficiency units utilizing innovative manufacturing techniques and premium selected raw materials. These motors deliver outstanding benefits including stable reliable operation, compact layout, low vibration, quiet running, lightweight construction and outdoor suitability, while fully meeting China’s National Grade 3 Energy Efficiency Standard. Designed for Zone 1 and Zone 2 hazardous locations with explosive gas atmospheres, they serve as universal prime movers across mining, general machinery, petrochemical, power generation and other industries to drive standard equipment such as compressors, pumps, crushers, winches, centrifuges, scrap shredders, cutting machines and belt conveyors, acting as an all-purpose ideal drive solution. We consistently pursue core development targets in drive technology: high efficiency, energy savings, eco-friendliness, reduced footprint, high power density and enhanced operational reliability. All power ratings and mounting dimensions of this motor series comply with China national standards, IEC standards issued by the International Electrotechnical Commission and German industrial standards, enabling seamless matching with overseas machinery and direct replacement of imported motors.
Advantageous Features
1. Advanced optimization design means
Combined with our long-term successful technology of producing medium-sized high-voltage motors, we adopt advanced design means to optimize the design of YB series high-voltage high-efficiency explosion-proof three-phase asynchronous motor.
2. Robust Mechanical Construction for Long-Term Reliability
Frame & Housing: The motor frame and end shields are fabricated from high-strength grey cast iron with proven manufacturing processes; ductile iron is available as an optional upgrade for extremely harsh operating environments. Thickened frame walls, integrated box-type end frame construction and reinforced mounting feet deliver superior structural strength and rigidity. The housing features cast horizontal and vertical cooling fins, with four axial air ducts running through the interior. Additional horizontal and vertical cooling ribs are arranged inside the frame aligned with winding overhangs to maximize internal heat dissipation area. The terminal box is mounted on the side air duct of the motor, while two diagonally positioned lifting lugs with adjustable angles are fitted atop the air ducts for convenient handling.
Y2HV motor frame
ANSYS analysis of the application of cast iron base heat sink temperature field calculation
This motor adopts independent external and internal cooling air loops to deliver optimal cooling performance while minimizing energy losses. Heat generated by the stator primarily transfers from the stator core to the frame before being dissipated by external cooling airflow. Heat from the rotor and stator winding overhangs is transferred to the frame via the internal cooling circuit.
For the external cooling loop, cooling air flows across the frame cooling fins from the non-drive end to the drive end. Aerodynamically optimized frame fins greatly boost cooling efficiency. The terminal box is positioned clear of the cooling fins to avoid blocking airflow, while internal cooling ribs surrounding the stator winding overhangs maximize heat dissipation.
In the internal cooling loop, the built-in internal fan circulates air through rotor ventilation holes, continuously transferring internal heat to the frame and end shields. The frame acts as a heat exchanger between internal and external air streams. Cooled air recirculates parallel to the external airflow through four internal ventilation ducts in the frame for staged cooling, ensuring even heat distribution across the whole motor.
This dual-loop cooling design not only raises the motor’s power density but also maintains consistent temperature distribution throughout the unit.
Motor external internal cooling air path
Internal cooling system simulation
Our high-voltage motors utilize a well-proven insulation system refined over years of operation. Combined with imported technology and modern upgraded manufacturing procedures, the system features an increased mica content and remains under continuous optimization. The stator winding is insulated with Class 155(F) materials, with coil overhangs firmly secured and bundled. During production, windings undergo multiple inter-turn impulse voltage and ground withstand voltage tests, followed by solvent-free VPI vacuum pressure impregnation treatment. This delivers superior dielectric strength, robust mechanical integrity, as well as outstanding anti-corrosion and moisture-proof performance. Special anti-corona coating is applied to coil sections, enabling stable and safe motor operation at high altitudes.
Both motor ends are fitted with continuous oil filling and draining fittings for routine grease replenishment. Internal components include stator temperature sensors, bearing temperature detectors and anti-condensation heating elements. Bearing or stator temperature monitoring instruments can be installed on-site upon customer request to enable real-time temperature tracking.
Aluminum die-cast rotors are supplied as standard. Adopting centrifugal or pressure die-casting techniques, molten pure aluminum is poured into rotor core slots and formed in a single casting step, integrating rotor bars and end rings into a unified component. The aluminum casting construction and production process deliver unmatched rotor reliability while providing excellent torque performance. Larger power motors adopt copper bar rotors, which are supported by stable bar fixing, sound end ring welding and retainer structures for high-speed units to guarantee long-term trouble-free running.
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
High-Voltage Asynchronous Motors The YKK series high-voltage three-phase asynchronous motors cover frame sizes from 355 mm to 1120 mm. Independently developed by our company, this product range integrates advanced domestic and overseas technologies. We adopt state-of-the-art field analysis technology for electromagnetic computation, with precise calculation and optimized design for power losses, wind resistance and structural strength of every component. Supported by our mature, stable design and production system and more than 70 years of experience manufacturing medium and large high-voltage AC motors, the motors are fabricated with premium raw materials and standardized processing techniques. They feature high efficiency, low noise, low vibration, excellent operational reliability, as well as convenient installation and maintenance. This series primarily drives general industrial machinery including fans, pumps, compressors, crushers, chip removing machines and conveying equipment. It serves petroleum, chemical, coal, power plant, metallurgical, transportation, textile, pharmaceutical and grain processing sectors. II. Advantages & Characteristics By digesting advanced domestic and international technologies, we adopt field-circuit coupled electromagnetic design for the YKK series. This greatly boosts electromagnetic calculation accuracy and delivers precise maximum torque multiple values, fully securing the motors’ reliable overload capacity. Finite Element Method (FEM) mechanical analysis is applied throughout structural design and repeatedly validated through field operation data. Accurate boundary conditions are set for mechanical models to optimize material utilization and suppress motor vibration and noise. FEM analysis fits all cooling configurations and realizes high-precision, visualized air flow distribution simulation. It elevates the accuracy of temperature rise prediction during design, cuts ventilation losses and further lifts overall motor efficiency.
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
