Explore our high-voltage and low-voltage heavy duty synchronous and asynchronous motors built for extreme industrial applications.
In the modern industrial landscape, electric motors (moteurs électriques) represent the primary workhorse, consuming over 45% of global electrical energy. As nations push for aggressive carbon-neutral targets and stringent environmental mandates, the optimization of rotating machines has shifted from a cost-saving preference to a core regulatory requirement. Industrial enterprises worldwide face the challenge of modernizing aging drive units with high-efficiency alternatives (IE3, IE4, and the emerging IE5 standards). Meeting these efficiency thresholds requires premium design revisions, precise stator-rotor electromagnetic configurations, and advanced thermal topologies.
Concurrently, specialized sectors such as chemical refining, offshore drilling, gas exploration, and underground mining require machines capable of operating in hazardous, highly combustible atmospheres. The risk of explosive dusts or gases mandates rigorous compliance with international safety protocols (ATEX, IECEx, CSA, Class I Division 1 & 2). An OEM exporter must balance high efficiency and extreme protection by using flameproof enclosures, increased safety designs, and dust ignition protection. Our distribution and manufacturing network focuses on this balance, engineering systems that handle extreme thermal and mechanical stresses while maintaining top efficiency.
Information Gain Insight: Modern system integration is moving away from static motor installations. Today's industrial setups demand variable speed drive (VSD) systems combined with permanent magnet synchronous motors (PMSM). This combination optimizes torque and speed across variable loads, resulting in up to 30% energy savings compared to standard fixed-speed induction designs.
Shaanxi Nanfang Motor Technology Co., Ltd. serves as the authorized distributor of Wolong Electric Drive Group Co., Ltd. Founded in 1984 and listed on the Shanghai Stock Exchange in 2002 (code SH600580), Wolong has grown to establish itself as a global leader in electric motor manufacturing. With three primary manufacturing bases, 39 advanced factories, and four world-class R&D centers spread across China, Europe, and the Americas, Wolong integrates advanced R&D, precision manufacturing, and strategic sales networks. Shaanxi Nanfang Motor Technology utilizes this vast infrastructure to deliver tailored, high-performance industrial drive solutions globally.
Providing custom motor drive systems that comply with global safety standards and deliver high efficiency.
We supply explosion-proof motors with diverse international certifications (ATEX, IECEx, CSA, EAC, SABS, TESTSAFE), ensuring safe deployment across volatile environments globally.
We offer IE3, IE4, and IE5 asynchronous and permanent magnet motors, configured to lower electricity consumption and minimize greenhouse gas emissions.
Our product portfolio ranges from fractional low-voltage motors to specialized high-voltage wound rotor synchronous systems, covering mining, petrochemical, and municipal infrastructure needs.
Wolong operates dedicated motor and drive control research centers in China, Europe, and Japan. Our central Shanghai research institute designs advanced technologies, ensuring our systems meet demanding application standards.
Through strategic growth, Wolong has integrated respected global brands, including Nanyang Explosion-proof, Brook Crompton, Morley, Laurence Scott, Schorch, and ATB, to support projects in petrochemicals, mining, and power generation.
Our explosion-proof motors are designed to operate safely in volatile chemical and coal mining environments. They hold certifications from leading agencies, including ATEX, IECEx, and EAC.
Wolong's growth includes the acquisition of several historical European and global motor brands. By integrating these engineering divisions, the company has combined Western design methods with efficient, high-volume production facilities. This setup supports the delivery of specialized, high-specification equipment globally.
Wolong acquired a 97.94% controlling stake in the Austrian ATB Group, one of the three major European motor manufacturers. This acquisition brought under Wolong's umbrella the renowned Morley brand (specialized in flameproof coal mining motors with a 130-year heritage) and Laurence Scott (well-known for low starting-current systems utilized in marine propulsion and power stations).
Established in 1882, Schorch joined Wolong, bringing specialized expertise in heavy-duty drive systems for oil & gas, chemical processing, water management, and tunnel ventilation.
China's largest scientific research and production base for explosion-proof motors merged into the Wolong Group, combining high-voltage ex-proof design capabilities with high-volume manufacturing lines.
Wolong acquired GE's small and medium industrial motor business. This integration brought access to GE's technical support, NEMA design databases, and expanded coverage in North American process industries.
A detailed look at the engineering components that ensure long-term reliability in severe operating conditions.
Our rotors use squirrel cage designs with cast aluminum, manufactured using centrifugal or die-casting techniques to ensure structural integrity and consistent torque. For higher capacity motors, copper bar rotors with welded end rings are used to handle high-speed stresses and mechanical loading.
The stator winding is constructed using high-mica tapes and premium copper wires. Following the VPI process, the stator core is bonded and sealed to resist moisture, chemical attack, and electrical tracking, maintaining dielectric stability under high-voltage stresses.
Our motor frames are engineered using digital structural and fluid multi-physics simulations. Cast in high-strength iron or fabricated steel, the frame provides robust heat dissipation and vibration dampening, protecting internal components during mechanical shock loads.
Featuring a compact housing, air guide cylinder, protective window, and silencer plate, this system optimizes cooling airflow while minimizing turbulence noise. Sound-absorbing materials reduce acoustic output, and the IP22 rating prevents contact with the fan.
Our motors are certified by major international bodies, ensuring smooth compliance and import clearance in global markets.
Nemko / ATEX
CSA Group
CE Conformity
CCC (China)
SABS (S. Africa)
TESTSAFE (Aus)
To facilitate seamless integration into global industrial projects, we maintain compliance with multiple standard framework certifications:
Modern electric motors must operate reliably under diverse localized conditions. In offshore oil and gas rigs, for instance, high humidity, salt spray, and flammable hydrocarbons require explosion-proof variable frequency motors (such as the YBBP and YBBPX series). These motors feature corrosion-resistant marine paint, internal heating bands to prevent condensation during standby, and flameproof terminal boxes (Ex d) to contain internal electrical sparks.
In underground coal mining applications, motors are subjected to dust accumulation and mechanical impacts. The YBS series and the Morley brand mining motors are designed to power longwall face conveyors and coal crushers. These models are constructed with heavy, ribbed cast-iron frames to handle physical impacts, and flameproof enclosures that maintain structural integrity during thermal excursions.
For municipal water distribution and chemical plant pumping stations, high-efficiency asynchronous motors (WE3 and YE4 series) run continuously. Under constant operation, even minor efficiency losses generate substantial heat and energy waste. Utilizing IE4 and IE5 level designs reduces heat buildup, extending bearing life and reducing overall plant operating costs.
Our manufacturing strategy leverages integrated raw-material and manufacturing networks. Operating within China's industrial hubs, our factories maintain partnerships with high-grade silicon steel laminations manufacturers, high-purity copper refineries, and specialized casting facilities. This proximity reduces transit times and buffers our production against global supply fluctuations.
In addition, the integration of automated stator winding systems, computerized balance verification machines, and automated VPI vacuum pressure chambers increases yield consistency while reducing labor costs. This balanced approach allows us to deliver high-specification custom motor systems that align with global specifications.
Industrial drives are evolving toward permanent magnet synchronous designs and integrated smart diagnostic sensors. Permanent magnet motors (such as the TBVF series) achieve high torque densities and maintain efficiency at partial loads, outperforming typical induction motors.
The next step in system monitoring integrates IoT diagnostics directly into the motor enclosure. By embedding temperature sensors (PT100) and vibration accelerometers in the bearing housings, operators can monitor motor performance in real time. This data feed enables predictive maintenance, helping to schedule service before a failure occurs and minimizing costly downtime in critical operations.
Answers to key technical questions about industrial motor selection, certifications, and efficiency standards.
Complete your facility configurations with our specialized flameproof conveyor motors, variable frequency systems, and standard-compliant AC induction solutions.
NANFANG