Engineered for compliance across ATEX, IECEx, CSA, and global explosive atmosphere regulations.
Shaanxi Nanfang Motor Technology Co., Ltd is the authorized distributor of Wolong. Wolong Electric Drive Group Co., Ltd was founded in 1984 and successfully listed in 2002 (code SH600580). Over more than 30 years of aggressive expansion and strategic tech accumulation, Wolong has established 3 manufacturing bases, 39 factories, and 3 R&D centers globally.
As an industry-leading integrator, Wolong focuses on the continuous R&D and manufacturing of high-performance electric motors and control systems. Through a global brand acquisition strategy, Wolong has united several century-old motor brands under its wings, securing absolute authority in technology, design, and manufacturing processes for heavy industries.
LEARN MORE ABOUT USAnalyzing critical parameters and pain points faced by procurement managers in explosion-hazardous zones.
In explosive industrial environments, motor selection is not merely a question of operational efficiency; it is an issue of life safety and strict legal compliance. Procurement officers, EPC project engineers, and operations managers face several challenges when sourcing Ex-Certificate motors for large-scale operations:
Providing custom, high-efficiency, certified driving systems for safety-critical systems.
We supply diverse Ex certificates for your specific geography and industry requirements. Our designs comply with ATEX Directive 2014/34/EU and IECEx rules, featuring flameproof Ex db, increased safety Ex eb, and non-sparking Ex ec protection methods.
Providing motors in IE3, IE4, and ultra-high efficiency IE5 levels. Leveraging advanced permanent magnet synchronous designs (such as the TBVF series) and optimized variable frequency drive matching to achieve massive carbon footprint reduction.
A broad catalog ranging from low-voltage fractional horsepower motors up to high-voltage, high-power heavy industrial induction machines. We cover applications from cooling towers and pumps to highly specialized mine hoists and gas compressors.
How Wolong's acquisitions have forged an unparalleled engineering powerhouse with over a century of technology.
Wolong's growth trajectory is characterized by strategic integrations of legendary European and American motor companies. By consolidating their specialized R&D data, patent portfolios, and design standards, Wolong offers cross-compatible engineering capabilities found nowhere else.
Acquired in 2011. As one of the top three European motor manufacturers, ATB includes legendary sub-brands like Morley (mining motors) and Laurence Scott (nuclear power generators), bringing massive authority in severe-duty environments.
A highly skilled participant in the electric motor sector boasting over a century of design mastery. Brook Crompton is famous for high-efficiency design paradigms, developing complete premium ranges like the "W" and "10" series.
Established in 1882 in Germany, Schorch sets the benchmark for high-quality heavy drive systems. Highly integrated in global petrochemical, water management, shipbuilding, and industrial test stations.
The undisputed global leader in vibration motors (MVE) and Ex vibration sensors. Wolong's strategic partnership with OLI dating back to 1999 has secured unparalleled market share in dry-bulk processing.
Acquired in 2015, CNE is China's largest explosion-proof motor research and manufacturing base. This strategic merger brought unparalleled capabilities in high-voltage Ex-d development.
In 2018, GE Industrial Motors joined forces with Wolong. As a veteran manufacturer, GE's integration provides robust support in heavy oil & gas, steel processing, pulp and paper, and material handling systems.
Our commitment to internationally recognized verification ensures seamless global deployment.
Nemko / ATEX
CSA International
CE Marking
CCC Certification
SABS Approved
TESTSAFE Australia
By adhering to a comprehensive global marketing strategy for electric motors and drive trains, Wolong has secured local approvals in key markets:
ISO 9001 Standard: Wolong is an ISO 9001 registered manufacturer. Having standardized control processes represents a critical gate to bypass international trade barriers, guaranteeing quality, precision manufacturing, and traceabilities.
NEMA Standard: To confirm mechanical performance specs for North American clients, we conduct comprehensive testing including starting torque tests, insulation resistance verification, temperature rise validation, and noise level audits. We successfully acquired UL and CSA certifications for our entire low-voltage motor line.
IECEx & ATEX Standards: Vital for European hazardous areas. Our explosion-proof designs are continuously updated to match EN/IEC 60079 series standards.
TESTSAFE Standard: Testsafe is the largest coal-mining product certification body in the Southern Hemisphere. The acquisition of Testsafe certification has completely opened the gateway for Chinese coal mining equipment to access Australia, raising our profile in safe mineral extraction drive systems.
Global Quality Assurance
Explore the engineering precision and premium materials that make our drive systems highly robust.
The rotor features a squirrel cage design, with cast aluminum rotors being widely utilized. These rotors are produced using centrifugal aluminum casting or die-casting techniques, where molten pure aluminum is poured into the slots of the rotor core, resulting in a single-piece construction that integrates the rotor bars and end rings.
The structural integrity and manufacturing process of cast aluminum rotors guarantee reliability and endow the motor with outstanding torque properties. For larger capacity motors, copper bar rotors are employed, benefiting from dependable bar securing and end-ring welding procedures. The protective ring design of high-speed motors further ensures the reliable operation of the copper bar rotor under centrifugal stress.
The winding coils are crafted from polyester film and reinforced with glass cloth, utilizing low-powder mica tape with high mica content or medium-powdered mica tape with an abundance of mica. Following the advanced VPI (Vacuum Pressure Impregnation) process, a pristine white coil insulation system emerges from the production line.
The entire winding assembly is engineered to provide exceptional electrical insulation performance, mechanical strength, resistance to moisture, and thermal stability in corrosive, humid environments typical of petrochemical plants.
The motor frame employs a fully digital platform for structural and fluid multi-physics field simulations (FEA & CFD). This simulation platform retains the original patent's structure and design, utilizing mature, high-strength cast iron (or steel as an alternative depending on requirements).
The frame boasts exceptional structural redundancy, outstanding heat dissipation properties, and ample inherent frequency isolation margins to prevent resonance. It is engineered to endure significant mechanical shocks, maintain a superior vibration level, and ensure lower temperature increases inside the motor.
The low-noise fan cover system comprises a fan cover body, an air guide cylinder, a protective window, and a silencer plate. Its compact structure and lightweight design facilitate vibration reduction. The air inlet is situated on the side, optimizing the avoidance of obstacles behind the motor and minimizing adverse effects on ventilation.
This system minimizes noise caused by energy loss during air propagation path changes. Incorporating sound-absorbing materials further lowers overall motor noise. The cover maintains an IP22 rating, ensuring safety by preventing accidental contact with the rotating fan blades.
Tailored motor solutions addressing strict industrial protocols and challenging operating conditions.
Handling flammable gases requires flameproof "db" enclosures. Our high-voltage YBXKK and low-voltage YBX3 series are designed to prevent internal explosions from igniting external hazardous atmospheres in refineries, drilling platforms, and pipelines.
Firedamp and coal dust pose constant explosion hazards. Working alongside our Morley and CNE Nanyang brands, we deliver massive water-cooled flameproof motors and heavy-duty vibration motors that comply with local mining safety standards.
Salty, high-humidity environments demand high corrosion resistance. The YQ series low-voltage marine motors feature DNV Type Approval certificates, anti-corrosive painting cycles, and heavy-duty shaft designs for onboard marine auxiliaries.
How we are driving the future of electric motor systems over the next decade.
The industrial landscape is evolving rapidly, driven by digitalization, energy efficiency mandates, and strict safety requirements. Wolong's technology roadmap focuses on three main pillars:
We are actively expanding our Permanent Magnet Synchronous Motor (PMSM) lines, such as the TBVF series. By utilizing rare-earth magnets and sophisticated variable speed drive (VSD) control algorithms, we can achieve up to a 15% energy loss reduction compared to conventional induction motors, meeting IE5 efficiency requirements.
Future Ex-motors must not only be safe but also smart. We are integrating non-invasive sensors within explosion-proof enclosures. These sensors monitor vibration, flux, and temperature, transmitting real-time operational data to cloud-based predictive maintenance systems to prevent failures before they occur.
From die-casting aluminum rotors to painting frames, our global factories are transitioning to green energy sources and low-emission production technologies. This ensures our motors feature low carbon footprints throughout their life cycle.
How Shaanxi Nanfang Motor Tech and Wolong secure your project timeline and aftermarket needs.
With 39 factories and 4 major research centers across China, Vietnam, the United Kingdom, Germany, Austria, Italy, Serbia, Mexico, and India, Wolong manages a highly resilient production and distribution footprint. At Shaanxi Nanfang Motor Technology, we streamline this global network to provide optimized local service:
Technical answers to common questions about explosion-proof motors and global compliance standards.
Explore our selection of variable frequency, non-sparking, and specialized marine motors.
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