Engineered for oil, gas, chemical processing, and mining industries under standard ATEX, IECEx, and CE certifications.
The global industrial sector is undergoing a profound paradigm shift. As corporate decarbonization mandates tighten and energy prices fluctuate, operational efficiency has evolved from a financial metric to a core regulatory imperative. Central to this transformation is the transition to IE5 Ultra-Premium Efficiency electric motor systems, specifically designed for hazardous, explosion-prone workspaces.
Under the EU Eco-design Regulation (EU) 2019/1781 and equivalent global frameworks, motors deployed in industrial locations must prioritize thermal efficiency and minimal energy dissipation. When these motors operate in hazardous atmospheres—subject to combustible gases, dust, or vapors—the integration of CE Certification, ATEX, and IECEx safety features with IE5 energy performance becomes critical.
Historically, explosion-proof motors suffered from compromised efficiency profiles due to heavy protective enclosures (Ex d, Ex e, Ex p) and thermal constraints. Today's advanced IE5 Ex motors utilize state-of-the-art permanent magnet technology (PMSM) and advanced fluid-cooled mechanisms to minimize winding losses, reducing Total Cost of Ownership (TCO) while guaranteeing absolute containment of ignition sources.
Bridging the gap between extreme operating environments and optimal energy conservation standards.
We deliver certified explosion protection portfolios tailored to local standards across Europe, North America, the CIS region, and Oceania, satisfying strict safety parameters for Gas Zone 1, Zone 2, Dust Zone 21, and Zone 22.
Both induction-type and permanent magnet synchronous motor (PMSM) configurations are available. Achieving the IE5 standard translates to a 20-30% reduction in heat dissipation and energy loss compared to IE3 motors.
Covering fractional up to high-capacity mega-watt drive designs. Configured for water cooling, force-ventilation, variable frequency drive (VFD) speed regulation, and harsh mining installations.
Production Facilities
Countries Deployed
R&D Patents
Megawatt Scale Projects
The authorized global distributor of Wolong Electric Drive Group Co., Ltd.
Founded in 1984 and listed on the Shanghai Stock Exchange in 2002 (code SH600580), Wolong Electric has built a robust international reputation. Supported by 3 core manufacturing bases, 39 state-of-the-art factories, and 3 global R&D centers, the group stands as a premier supplier in the international drive technology landscape.
Wolong coordinates development programs across research centers in China, Europe, and Japan, establishing a centralized R&D hub in Shanghai. This structural integration ensures our motors meet the cutting edge of fluid dynamics, magnetic path simulations, and electronic variable drive designs.
Incorporates iconic names in heavy industrial equipment: CNE (Nanyang Explosion-proof), Brook Crompton, Morley, Laurence Scott, Schorch, ATB, and OLI. This deep brand heritage allows us to target diverse niche applications, from Navy submersibles to heavy mining conveyors.
Our explosion-proof line benefits from Nanyang Explosion Protection Group's (CNE) legacy as China’s largest dedicated Ex motor research and production base. Since integrating with Wolong, we have consolidated expertise in flameproof (Ex d), flameproof with water cooling (Ex d(w)), increased safety (Ex e), and pressurized shell (Ex p) architectures.
These specialized solutions are engineered to withstand extreme mechanical shocks, volatile chemical vapors, and thermal stresses. The products undergo rigorous testing, ensuring compliance with global certifications including ATEX, IECEx, CU-TR/EAC, CSA, UL, and South African SABS.
A history of acquiring and optimizing premium motor technologies worldwide.
Accumulated with abundant assets and decades of experience in manufacturing, Wolong pursued a strategic global expansion strategy to integrate world-class engineering teams.
In 2011, Wolong acquired 97.94% of the Austrian ATB Group (ATB motor), one of the three major European motor manufacturers. This acquisition brought the specialized underground coal mining brand Morley (with a 130-year legacy in heavy-duty machinery) and Laurence Scott (renowned for low starting current designs and supplying naval generator systems) into the Wolong portfolio.
Boasting over a century of experience in motor design, Brook Crompton has led the way in energy-efficient motor development, delivering premium low, medium, and high voltage AC motors tailored for challenging industrial projects.
Founded in 1882 in Germany, Schorch sets the standard for high-power drive systems. These systems are utilized globally in critical applications such as oil and gas extraction, chemical processing, and large-scale power generation.
OLI is a global leader in electric vibration motors and industrial sensors. Since partnering with Wolong in 1999, OLI has dominated the bulk material handling and concrete consolidation sectors.
In 2018, General Electric’s (GE) commercial and industrial motor division joined the Wolong Group. This addition bolstered our engineering and support network across heavy industries, including oil and gas refining, chemical manufacturing, mining, metal processing, pulp and paper, and water treatment.
This integration combined GE’s design expertise with Wolong’s high-volume manufacturing capabilities, resulting in a reliable product lineup that meets NEMA standards for the North American market and IEC standards for Europe.
Combining automated manufacturing with global distribution networks to ensure on-time delivery.
In today's complex supply chain environment, project managers face risks from long lead times and logistics delays. To address this, Shaanxi Nanfang Motor and Wolong have optimized production processes using Factory 4.0 standards.
Our automated factories feature robotic winding systems, automated vacuum pressure impregnation (VPI) facilities, and digital multi-physics test rigs. This tech integration helps eliminate manufacturing defects, while real-time scheduling keeps production on track.
Our streamlined supply chain sources high-grade raw materials—such as low-loss electrical steel sheets and high-purity copper—directly from audited partners. This domestic integration protects our production from external market volatility, allowing us to offer stable pricing and reliable delivery dates.
Ensures precise dimensional tolerances for flameproof paths on shafts and end caps, preventing hot gas escape.
Maintains high slot fill factor and insulation integrity, preventing inter-turn faults in inverter-fed applications.
Verifies dynamic thermal performance, vibration spectra, and efficiency curves under simulated field loads.
Inside the technology that delivers safety, high efficiency, and mechanical durability.
Our rotors feature a robust squirrel cage design, utilizing cast aluminum produced via centrifugal casting or high-pressure die-casting. This single-piece construction integrates rotor bars and end rings, delivering stable starting torque and reliable operation. For large-capacity configurations, we use copper bar rotors with specialized brazing and high-speed retaining rings to prevent bar lift under thermal stress.
Our stator coils are wound using high-grade copper conductors insulated with polyester film and glass-backed mica tape. Following winding, assemblies undergo our advanced Vacuum Pressure Impregnation (VPI) process. This creates a dense, void-free block with high dielectric strength, moisture resistance, and thermal dissipation performance.
Engineered using structural and thermal multi-physics simulation software, our cast iron and steel frames feature optimized cooling fins. These frames provide high structural rigidity, minimal resonance levels, and high shock tolerance, helping to ensure long bearing life and safe operation.
The low-noise ventilation system features a compact cover, integrated air guides, and internal silencer plates. The side-entry air intake design helps minimize back-draft resistance, while built-in sound-absorbing materials reduce noise. The system is rated IP22, keeping operators safe by preventing physical contact with the fan blades.
Ensuring compliance across diverse international regulatory markets.
Nemko / ATEX
CSA
CE
CCC
SABS
TESTSAFE
Wolong designs and manufactures its electric motors in strict compliance with international safety and quality standards, enabling smooth customs clearance and regulatory approval:
A look at the assembly, winding, insulation, and quality verification processes inside our facilities.
Wolong drive systems are utilized across high-safety industries around the globe.
In petrochemical facilities, motors face volatile hydrocarbon gases and corrosive ocean air. Our flameproof (Ex d) motors feature marine-grade epoxy coatings and specialized IP66 sealing to protect internal components from moisture ingress and aggressive chemical vapors.
Underground coal mines are challenging environments due to abrasive coal dust and combustible methane gas. Designed with robust cast iron frames and heavy-duty bearings, our flameproof conveyor motors are engineered to handle high startup loads and deliver reliable performance in confined spaces.
Wastewater plants require continuous operation for processing pumps and aeration blowers. Utilizing IE5 efficiency motors helps treatment plants lower their daily energy consumption and reduce the total cost of ownership over long operating cycles.
Answers to common technical questions about implementing ultra-premium efficiency explosion-proof motors.
ATEX is a mandatory European Union directive governing equipment used in explosive atmospheres. IECEx is an international certification scheme recognized in multiple jurisdictions globally. While they use similar technical standards (such as IEC/EN 60079), ATEX is legally required for European markets, whereas IECEx simplifies product approvals in countries like Australia, Singapore, and parts of the Americas. Our motors carry both markings to allow for flexible deployment.
IE5 motors achieve higher efficiency by reducing internal energy losses by 20% to 30% compared to IE4 models. This is done by optimizing stator winding configurations, using higher-grade silicon steel laminations to lower core losses, and implementing permanent magnet synchronous motor (PMSM) technologies to virtually eliminate rotor conductor losses.
Yes, our YBBP and WEBP3 series are specifically designed for variable frequency speed regulation. They feature reinforced VPI stator winding insulation to handle voltage spikes from VFD switching, and can be fitted with insulated non-drive end bearings to prevent damage from circulating shaft currents.
TestSafe is a recognized certification body for mining equipment in Australia. Compliant motors must pass strict flameproof testing for coal mine environments, where methane gas and coal dust are prevalent. Our YBK3 series coal mine motors comply with these parameters, making them suitable for use in Australian mining installations.
Extended technical lineup including positive pressure shell types, flameproof water pump units, and variable frequency solutions.
NANFANG
