Authorized Distributor of Wolong Electric Drive Group Co., Ltd.
Founded in 1984 and listed on the Shanghai Stock Exchange in 2002 (code SH600580), Wolong Electric Drive Group is a dominant global pioneer in motor and drive control technology. Shaanxi Nanfang Motor Technology Co., Ltd., as an elite authorized partner, links this vast global engineering architecture to specialized industrial markets worldwide. With 3 premium manufacturing bases, 39 state-of-the-art factories, and 3 global R&D hubs, Wolong delivers highly tailored medium and high voltage motor systems that comply with rigid international certification protocols, including European CE directives.
By prioritizing a meticulous multi-brand synergy strategy, Wolong incorporates the histories of Brook Crompton, Morley, Laurence Scott, Schorch, ATB, and CNE (Nanyang Explosion-proof Group). This alliance establishes top-tier capabilities in mechanical performance, explosive-environment mitigation, and energy conservation, providing our industrial clients with unmatched uptime and reduced lifecycle costs.
Modern industrial production relies heavily on medium voltage (MV) motor drive systems. From massive petrochemical pipelines to subterranean mining operations, these systems must operate continuously while minimizing energy losses.
With global carbon regulations intensifying, industrial facilities are upgrading to high-efficiency MV platforms. Transitioning from legacy IE1/IE2 ratings to IE3, IE4, and advanced Permanent Magnet (IE5) motors significantly lowers carbon footprints and operational expenditures.
Safety remains paramount in dangerous operations. Rigid frameworks, such as the European Union's CE marking and ATEX Directive (2014/34/EU), govern all electric drives operating in potentially explosive environments, including gases, vapors, and combustible dusts.
Heavy-duty industries require motors built for extreme demands. Our medium voltage platforms utilize high-grade materials and structural simulation to withstand continuous runtime, grid irregularities, and harsh climates, avoiding costly downtime.
Wolong's medium voltage motors feature an optimized physical architecture designed with advanced modeling tools to deliver high thermal limits and mechanical reliability.
Our rotors utilize a rugged squirrel cage design optimized for high startup torque and thermal capacity. Cast aluminum rotors are produced using centrifugal casting or advanced die-casting techniques, integrating the rotor bars and end rings into a single-piece construction. This approach guarantees outstanding mechanical reliability, structural uniformity, and excellent torque profiles.
For high-capacity medium voltage models, we employ copper bar rotors fabricated with precise TIG welding to secure the end rings. Additionally, custom-engineered high-speed retention rings protect the windings from centrifugal deformation during overspeed events, ensuring long-term balance and reliability.
The stator windings are the core of our high-voltage electrical performance. The coils are wound with high-conductivity polyester-imide enameled wire, insulated with glass-cloth reinforced mica tape, and vacuum-pressure impregnated (VPI) with premium solventless resin. This process eliminates microscopic voids, preventing partial discharge (corona) and protecting against moisture absorption.
The VPI insulation system achieves Class F or Class H thermal ratings. This provides high dielectric strength, excellent mechanical rigidity against electromagnetic forces, and superior thermal dissipation, allowing the motor to operate reliably in harsh environments.
Our motor frames are engineered using multi-physics simulations to optimize heat transfer and mechanical rigidity. Fabricated from high-grade cast iron or structural carbon steel, the frame absorbs dynamic torque loads and dampens operational vibrations.
By engineering ample natural frequency margins into the design, our frames avoid structural resonance with system-associated equipment, such as gearboxes or high-volume pumps. This structural design shields the internal components from external mechanical shocks while ensuring stable heat dissipation.
Industrial health regulations place strict limits on sound pressure levels in motor halls. Our low-noise fan cover system features an integrated design with a cover body, air guide cylinder, protective window, and acoustical silencer plates. This structure helps minimize structural vibration and aerodynamic noise.
By locating the air inlet on the side, we optimize the incoming airflow around potential structural obstacles behind the motor, reducing turbulence and energy losses. Rated to IP22/IP23 finger-safety standards, these enclosures maintain high cooling performance while protecting personnel and preventing objects from entering the fan path.
Wolong's strength lies in its integration of historic global manufacturers. By combining European engineering heritage with modern precision manufacturing, we offer a comprehensive range of industrial electric drives.
In 2011, Wolong acquired 97.94% of Austria's ATB Group, a leading European motor manufacturer. This acquisition brought specialized technical expertise to Wolong, particularly in high-specification oil, gas, and chemical industry drives.
Morley holds a 130-year legacy in underground coal mining equipment, serving as a benchmark for rugged reliability. Laurence Scott specializes in low starting current motors for nuclear installations and generators for naval vessels.
Brook Crompton has over a century of experience in motor design and innovation. They specialize in high-efficiency low, medium, and high voltage AC motors, including the energy-efficient "W" and "10" series.
Founded in Germany in 1882, Schorch joined Wolong in 2011. Known globally for heavy-duty electric motors, Schorch drives water supply systems, steel mills, wind tunnels, and demanding petrochemical plants.
OLI is a global leader in vibration motors (MVE) and explosion-proof vibration sensors. Partnering with Wolong in China since 1999, OLI provides high-frequency vibration solutions for material handling and processing.
CNE is a major explosion-proof motor research and manufacturing base in China. Joining Wolong in 2015, they supply certified explosion-proof drives for coal mines, aerospace, and hazardous chemical industries.
In 2018, General Electric (GE)'s industrial motor division partnered with Wolong. This collaboration integrates GE's heavy-duty engineering heritage with Wolong's global manufacturing capabilities.
Wolong operates active research and development centers in Europe, Japan, and China, with its central research institute in Shanghai. These facilities focus on developing motor technologies, drive algorithms, and smart diagnostics.
All manufacturing bases perform load, vibration, dielectric, and temperature rise testing. These rigorous processes verify that each motor matches simulated specifications before shipment.
In petrochemical processing, unscheduled downtime can be highly disruptive. We design high-voltage positive pressure (YZYKK series) and flameproof (YB3, YBSS) motors to operate reliably in Zone 1 and Zone 2 hazardous areas, driving gas compressors, crude pumps, and cooling fans.
Our flameproof AC motors (YBSD, YBSS) are built for underground mining applications, featuring high starting torque and heavy thermal capacity. They are designed to drive conveyors, slurry pumps, and ventilation equipment in wet, dust-prone, and hazardous environments.
Municipal water supply and wastewater management systems require continuous, high-efficiency operation. Wolong and Schorch provide large-capacity vertical and horizontal induction motors that deliver high efficiency across varying load conditions.
Wolong operates 39 manufacturing facilities and 4 R&D centers across major markets, including China, Vietnam, the United Kingdom, Germany, Austria, Italy, Serbia, Mexico, and India. This global footprint allows us to support projects in industrial sectors such as power generation, ventilation, industrial refrigeration, marine engineering, and processing machinery, delivering customized drive systems that comply with local regulatory frameworks.
Wolong maintains third-party safety and performance certifications to ensure seamless compliance for global deployment.
As an ISO 9001-certified explosion-proof motor manufacturer, Wolong implements rigorous control at every stage, from material sourcing to final testing. This system helps ensure consistent product quality, helping clients bypass international trade barriers.
Our products meet NEMA performance specifications, with low-voltage lines carrying UL and CSA certifications. Design verification includes tests for starting current, torque, thermal limits, vibration, and acoustic levels to ensure reliability under heavy industrial loads.
For operations in explosive gas or dust environments across Europe and international markets, Wolong maintains a comprehensive portfolio of ATEX and IECEx certifications. These cover flameproof, increased safety, pressurized, and non-sparking protection concepts.
The Testsafe certification program enables Wolong to supply mining and explosive-dust motors to Australia and surrounding regions. This verification confirms that our heavy-duty mining equipment complies with regional safety standards for underground and surface processing.
Wolong's digital factories utilize automatic precision stator winders, large-capacity VPI systems, CNC machining centers, and comprehensive load-testing bays.
Wolong's technology roadmap balances efficiency improvements with safety requirements to support modern, automated industrial processes.
Industrial plants are increasingly coupling medium voltage induction motors with variable frequency drives (VFDs) to control speed. Wolong's motor designs are optimized for VFD compatibility, featuring reinforced insulation systems that withstand voltage reflection spikes and prevent shaft currents.
By integrating vibration and thermal sensors (such as OLI Ex-proof sensors), we enable cloud-based predictive maintenance. Real-time condition monitoring tracks temperature increases and vibration profiles, allowing operators to schedule maintenance and prevent unplanned failures.
Our development efforts focus on scaling Permanent Magnet Synchronous Motors (PMSM) into medium-voltage applications. These drives achieve IE5 efficiency levels, reducing energy consumption and operational footprint for high-performance applications.
Technical information regarding testing, certifications, and operational parameters for medium voltage installations.
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