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Technical Specifications Power Range: 0.55 kW to 20,000 kW Voltage Range: 380 V up to 13.8 kV Shaft Height: 355 mm – 1120 mm Raw Materials Frame: High-strength cast iron or steel Stator: Pure copper winding Rotor: Copper or aluminum construction Shaft: ASTM 1045 carbon steel Bearings: SKF, FAG, or equivalent premium domestic brands
Our IEC-compliant medium voltage asynchronous motors fully comply with international IEC standards and deliver steady reliable performance for heavy-duty industrial applications. Covering a broad power range of 0.55 kW to 20,000 kW and voltage options from 380 V up to 13.8 kV, they fit various industrial system requirements perfectly. Changli Electric specializes in manufacturing high-performance medium voltage motors compatible with both IEC and GOST standards to serve harsh industrial operating environments.
The Y (A4) and YKK (DAZO) high-voltage three-phase asynchronous motors cover frame sizes 355 mm to 1120 mm. We developed this product line by absorbing and optimizing advanced domestic and overseas technologies. Modern electromagnetic field simulation technology is adopted for precise electromagnetic calculation, enabling refined optimization of all power losses, wind resistance and component structural strength. Supported by our mature, validated design and manufacturing system plus over 70 years of experience producing medium and large high-voltage AC motors, these motors are built with premium raw materials and sophisticated machining techniques. They stand out with high energy efficiency, low noise, minimal vibration, exceptional operational reliability and simple installation & maintenance.
This series acts as driving equipment for general machinery including fans, water pumps, compressors, crushers, cutting machines and conveying equipment. It is widely deployed across petroleum, chemical, coal mining, power plant, metallurgy, transportation, textile, pharmaceutical and grain processing sectors.
Integrating worldwide advanced technologies, Changli applies a combined field-circuit electromagnetic design for this motor series. It greatly improves electromagnetic calculation accuracy and delivers precise breakdown torque values, effectively securing the motor’s overload capacity. Finite Element Method (FEM) structural analysis, continuously verified through field operation, allows accurate boundary condition setup for mechanical models. This optimizes material utilization accuracy while suppressing motor vibration and noise.
FEM analysis adapts to all cooling configurations, providing highly accurate and visualized airflow distribution data. It elevates precision of temperature rise calculation during design, cuts ventilation loss and further boosts motor efficiency.
Benefiting from advanced electromagnetic design and optimized structural simulation, these IEC standard medium voltage motors feature high efficiency, low vibration and stable running performance. All units are constructed with premium materials: pure copper stator windings, robust steel shafts and trustworthy bearings from SKF, FAG or equivalent brands.
Thanks to sturdy construction and field-proven reliability, our motors are extensively used to drive pumps, fans, compressors, crushers, conveyors and other heavy machinery in power generation, petrochemical, mining, metallurgy and water treatment industries.
All measuring instruments and testing equipment receive annual calibration to guarantee measuring precision. Strict inspection procedures are implemented at every production stage:
Every motor undergoes complete testing before shipment and can only be delivered after passing all test items. A dedicated test report will be provided for each unit.
The standard total coating thickness is 120 microns, consisting of a 40-micron primer layer and an 80-micron topcoat layer. Our certified professional coating team can customize any color according to customer requests.
We provide standard seaworthy export packaging options, including plywood cases or heat-fumigated wooden crates, suitable for long-distance ocean transportation.
Our standard warranty covers 12 months from commissioning or 18 months after delivery, whichever comes first. Please contact our team if you need information on extended warranty solutions.
Medium-voltage motors serve as the prime drive solution for all heavy-load and complex industrial processes. Since 1946, Changli has supplied dependable, high-efficiency industrial motors to global clients including cement facilities, pumping stations, mining operations, chemical and oil & gas plants, as well as original equipment manufacturers. Changli develops and produces medium and high voltage asynchronous motors rated up to 13.8 kV, with both squirrel-cage and slip-ring rotor options capable of delivering a maximum power output of 20 MW. We provide flexible electrical and mechanical customizations alongside a full lineup of protection grades and cooling systems. Compatible with both direct mains supply and variable speed inverter operation, our motors fully conform to the latest IEC60034, GB/T13957-2008, DIN and ISO standards.
Changli’s squirrel cage medium-voltage motors are purpose-built to handle heavy-duty loads and highly complex industrial operating conditions. Drawing on manufacturing expertise dating back to 1946, we have long supplied high-efficiency, field-proven motors to global customers across the cement, mining, oil and gas, chemical, and power generation industries. Our medium and high-voltage asynchronous motors are offered in both squirrel cage and slip-ring rotor configurations, with voltage ratings up to 13.8 kV and power outputs reaching 20 MW. Suitable for both direct-on-line mains operation and variable inverter-driven operation, our motors deliver stable, long-lasting performance even in the most harsh and demanding working environments.
Medium-voltage motors are the backbone of heavy-duty industries, reliably powering high-load equipment and complex process applications. With a manufacturing heritage dating back to 1946, Changli has long been a trusted global supplier of high-efficiency industrial motors, serving cement, mining, pumping, chemical, oil and gas, power plant and general industrial sectors worldwide. Changli designs and manufactures medium to high voltage asynchronous motors up to 13.8 kV, available in both squirrel-cage and slip-ring rotor versions, with power ratings reaching up to 20 MW. The series supports flexible electrical and mechanical configurations, together with a full range of cooling systems and protection classes. Suitable for both direct mains and variable speed inverter operation, our motors fully comply with the latest IEC60034, GB/T13957-2008, DIN and ISO international standards.
Changli’s DAZO Series Induction Motors are purpose-built for heavy-duty and complex industrial applications, delivering robust performance and outstanding load-bearing capacity. Backed by over 70 years of industry expertise, Changli has established a solid reputation as a reliable supplier of medium and high-voltage asynchronous motors, serving core sectors including cement production, mining, chemical processing, oil and gas, and power generation. Engineered for harsh and demanding operating conditions, the DAZO series supports fully customizable configurations to meet diverse application requirements. Offered in both squirrel-cage and slip-ring rotor designs, these motors excel in scenarios that prioritize high energy efficiency, structural durability and extended service life, delivering consistent, dependable long-term operation.
Y Series medium-voltage three-phase asynchronous motors are robust, general-purpose industrial drive motors developed with mature optimized design and advanced manufacturing technology. Featuring compact structure, high operating efficiency, low vibration, low noise and excellent operational stability, this motor series fully meets national and IEC energy efficiency and dimensional standards, supporting universal interchangeability and wide compatibility with domestic and international equipment. Adopting high-quality cast iron housing, optimized ventilation structure and reliable insulation system, the motors ensure outstanding heat dissipation performance, strong overload capacity and long service life under continuous heavy-duty operation. Designed for durable and energy-saving performance, Y Series medium-voltage motors are widely applied in mining, petrochemical, power plants, metallurgy, water treatment and general machinery industries to drive compressors, pumps, fans, crushers, conveyors and other conventional industrial equipment, serving as a highly reliable and cost-effective prime mover solution for various standard industrial applications.
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
