Engineered for high performance, efficiency, and safety in hazardous and industrial applications. Global standards-compliant electric drive lines.
Pioneering Global Drive Systems & Power Transmission Partnerships
Shaanxi Nanfang Motor Technology Co., Ltd. stands as the premier authorized distributor of Wolong. Founded in 1984, Wolong Electric Drive Group Co., Ltd. successfully listed on the Shanghai Stock Exchange in 2002 (stock code: SH600580). Over nearly four decades of strategic expansion and technical breakthrough, Wolong has established a dominating footprint featuring 3 global manufacturing bases, 39 advanced factories, and 3 state-of-the-art research and development centers worldwide.
Dedicated to manufacturing top-tier electric motors and integrated control systems, Wolong’s global brand strategy positions it at the leading edge of technology, process design, fabrication, and international distribution, rendering it a reliable partner for key infrastructural projects worldwide.
Consolidating centuries of motor engineering legacy through global strategic acquisitions.
Through calculated overseas acquisitions and technology transfers, Wolong has integrated some of the world's most venerable electric motor brands. This alliance delivers an unmatched portfolio of engineering capability, cross-industry expertise, and global certification coverage.
Acquired in 2011, ATB is one of Europe's top three motor manufacturers. This acquisition equipped Wolong with elite European design methodologies and advanced manufacturing technology, making it a prominent global force in high-spec electric drives.
With a legacy spanning nearly 130 years, Morley is a benchmark in underground coal mining drives. Synonymous with extreme reliability and rugged safety, Morley motors power heavy-duty mineral extraction machinery in the harshest deep-earth operations.
A pioneer in low-starting-current solutions, Laurence Scott has supplied safety-critical motors for British nuclear power plants and generators for naval vessels. The brand is a recipient of the prestigious Queen's Award for three consecutive years.
Boasting over a century of motor innovation, Brook Crompton is a pioneer in energy-efficient design. The premium Brook Crompton "W" and "10" series offer low, medium, and high-voltage AC motors optimized for harsh, demanding processes.
Established in Germany in 1882, Schorch represents high-end motor engineering. Schorch drives serve critical roles in oil and gas, petrochemicals, power generation, water and waste management, shipbuilding, and industrial testing stations.
Partnering with OLI vibration motors and acquiring General Electric's (GE) commercial and industrial motors division in 2018, Wolong expanded its heavy industrial reach across metallurgy, papermaking, and marine propulsion systems.
An inside look at our high-voltage motor architecture and fabrication technology.
Our stator coils are engineered using high-content, low-powder or medium-powdered mica tapes reinforced with high-tensile glass cloth and polyester film. The entire wound assembly undergoes a computerized Vacuum Pressure Impregnation (VPI) process.
This process eliminates air pockets within the insulation structure, ensuring high dielectric strength, thermal conductivity, moisture resistance, and mechanical rigidity under cyclical thermal stresses.
Our rotors utilize squirrel cage configurations optimized for heavy starting torque. Medium-range motors feature centrifugally cast aluminum or die-cast aluminum rotors, integrating the rotor bars and end rings into a solid, virtually indestructible piece.
For larger-capacity high-voltage motors, custom copper bar rotors with precision welded end-rings and high-speed retaining rings are used, preventing bar deformation under high centrifugal forces.
Developed on a fully digital simulation platform, our motor frames are modeled using multi-physics structural and fluid thermal dynamics. Cast from high-strength gray cast iron or structural carbon steel, the frames are engineered with significant structural redundancy.
This design provides excellent vibration damping, ample natural frequency margins to prevent resonance, and optimal external cooling fins to maintain low temperature rise.
Our low-noise fan cover system features an integrated air guide cylinder, protective entry mesh, and internal sound-absorbing acoustic baffles. The lateral air intake minimizes turbulence and avoids obstacles behind the motor, reducing aerodynamic noise.
Rated at IP22, the fan cover prevents external ingress and contact while maximizing the volume of cooling air delivered to the motor.
Enabling seamless entry into regulated and hazardous industrial environments worldwide.
Nemko / ATEX
CSA
CE
CCC
SABS
TESTSAFE
Our high-voltage, explosion-proof motors are certified to IECEx and ATEX standards, allowing their use in Zones 1 and 2 (gas) and Zones 21 and 22 (dust) across Europe and international markets. Features include flameproof enclosure (Ex d), increased safety (Ex e), and pressurized protection (Ex p).
For the North American market, our low and medium-voltage motors carry UL and CSA safety marks, meeting NEMA MG1 electrical performance and mechanical criteria. These motors undergo testing for efficiency, insulation resistance, temperature rise under load, and vibration limits.
Our manufacturing facilities operate under a certified ISO 9001 quality management system. From raw material sourcing through stator winding to final full-load testing, every step is documented and traceable, ensuring product consistency and reliability.
By securing TESTSAFE certification—the prominent coal mining equipment certification body in the Southern Hemisphere—we supply mining-grade explosion-proof motors directly to Australian coal operations and regional mining OEMs.
Leading the next generation of smart, energy-efficient, and sustainable power transmission systems.
As carbon neutrality goals and energy costs shape the future of heavy industry, high-voltage electric motor development centers on high efficiency, variable-frequency control, and smart diagnostic monitoring.
We are transitioning our product lines toward IE4 and IE5 efficiency standards, utilizing PM-assisted synchronous reluctance technologies to reduce rotor losses and optimize magnetic flux distributions.
Integrating vibration sensors and thermal probes into the motor frame allows real-time health monitoring and predictive maintenance, reducing unplanned downtime in continuous process operations.
Optimizing motors for VFD drive packages (such as our YBBPX and BPY-S30 series) prevents harmonic heating, controls starting current, and delivers high torque performance across the speed range.
Custom-engineered electric motor packages for demanding industrial operations.
We provide flameproof (Ex d), increased safety (Ex e), and positive-pressure (Ex p) motors to drive compressors, crude transfer pumps, and refinery fans, complying with ATEX/IECEx safety standards.
Designed for coal shearers, continuous miners, and heavy-duty conveyor systems. Our Morley and YBSD series motors feature heavy cast steel enclosures, high pull-out torque, and water-cooled jackets.
High-voltage vertical and horizontal motors (YKS, YKK, and water-cooled variations) driving municipal pumping stations, desalinization plants, and large-scale agricultural irrigation projects.
Securing your operational continuity with localized engineering and services.
Procuring high-voltage electric motors for critical infrastructure requires more than basic manufacturing. It demands technical collaboration, compliance verification, and localized support.
Through our network of service partners and Wolong's overseas subsidiaries, we provide comprehensive project support, including engineering customization, witness testing, on-site commissioning, and local replacement parts inventory. This minimizes supply chain risk and ensures compliance with local grid regulations and safety standards.
Expert answers to common technical, commercial, and engineering questions regarding high-voltage motors.
VPI completely saturates the stator windings with high-grade insulating resin, eliminating air voids. This provides superior resistance to moisture, chemicals, and mechanical vibrations while enhancing heat dissipation and extending insulation life under high thermal stresses.
These acquisitions allow us to combine European design, engineering standards, and quality control methodologies with Chinese manufacturing. This combination delivers high-performance electric motors at competitive price points.
Yes. Our Morley and YBSD series flameproof motors are specifically designed for coal mines. With certifications like TESTSAFE, ATEX, and IECEx, they are qualified for use in gassy mines and coal dust environments.
We supply motors meeting IE3, IE4, and the latest IE5 ultra-premium efficiency standards. Our permanent magnet synchronous motors (such as the WEPM series) are designed to minimize electrical losses in continuous process applications.
Every motor undergoes routine testing, including insulation resistance, winding resistance, no-load characteristics, and vibration testing. We also support full-load type tests, temperature rise tests, and third-party witness testing (SGS, TUV, DNV).
Yes. Through our NEXP series and other specialized motor lines, we manufacture motors compliant with NEMA MG1 mechanical and electrical specifications, certified by UL and CSA.
High-efficiency synchronous, PM-assisted, and variable frequency speed-regulated drive lines.
NANFANG
