Engineered for Zone 1 & 2 hazardous operations with leading IECEx, ATEX, and NEMA certifications.
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Learn MoreAnalyzing critical safety environments and the necessity of highly specialized electric drive solutions.
Modern process industries face extreme operating risks. Standard motors cannot withstand explosive dust, flammable vapors, or volatile chemical compositions. Advanced customization guarantees continuous performance and non-ignition compliance.
As standard systems align under ATEX (Europe), IECEx (Global), and NEC (Americas), multi-agency approved machinery is mandatory. Facilities demand customized explosion-proof platforms verified to mitigate dynamic thermal stresses.
From water-cooled variable frequency motors to heavy-duty permanent magnet synchronous drivetrains, standard designs fail. High precision machining guarantees drop-in dimensional configurations, optimized insulation, and customized electrical characteristics.
Providing cutting-edge industrial drive solutions through Shaanxi Nanfang Motor Technology Co., Ltd.
Shaanxi Nanfang Motor Technology Co., Ltd serves as 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 has advanced the science of industrial motor manufacturing. The enterprise owns 3 global manufacturing bases, 39 manufacturing factories, and 3 state-of-the-art global R&D centers, ensuring a reliable international distribution channel.
Under a single-minded brand trajectory, Wolong has acquired a matrix of centuries-old industrial heavyweights. Today, our engineering capability leverages globally renowned brands, delivering unparalleled technology, process design, and application-specific custom configurations:
China's premier scientific explosion-proof motor research and production group. CNE has led heavy industry development in oil extraction, petrochemical processing, coal extraction, and military operations. It serves as a structural foundation for our specialized high-voltage flameproof offerings.
Austrian industry titan ATB, acquired in 2011, includes Morley Motors—an authority in underground coal mining equipment with nearly 130 years of history. Its name is synonymous with mechanical power in coal extraction. Laurence Scott, a pioneer of low starting current auxiliary motors for nuclear installations and naval defense fleets, is also a key asset.
Brook Crompton brings over 100 years of mastery in efficient "W" standard industrial drive frames. Schorch, founded in Germany in 1882, designs heavy industrial drive packages for oil/gas pipelines, water treatment infrastructure, and demanding transport tunnels.
In 2018, GE's industrial motor business established a partnership with Wolong, strengthening heavy-industry engineering. It leverages centuries of technical expertise in petrochemical operations, metallurgy, raw material refinement, and global field support.
How our centralized supply chain translates into rapid development, safety, and commercial value.
Our operations minimize turnaround times. Standard alloy refining, precision metal stamping, housing casting, winding automation, and safety testing are executed under one roof to control tolerances and avoid third-party delays.
Engineers adapt shaft geometry, mounting footprints, winding configurations, and thermal sensor integrations. Custom layouts proceed quickly from design to deployment, matching target configurations within standard lead times.
We combine manufacturing efficiency with rigorous quality control. Digital testing centers subject every motor to extensive thermal checks, dielectric tests, and vibration analysis before shipment.
A detailed engineering breakdown of our high-quality custom explosion-proof motor systems.
Featuring a rugged squirrel-cage design, our rotors utilize advanced cast aluminum structures fabricated via centrifugal or high-pressure die-casting. The molten pure aluminum fills the rotor slots, creating a unified structure with integrated bars and end rings. This ensures mechanical integrity, balance, and excellent torque-speed characteristics. For larger systems, copper bar designs are used with robust bar securing and end-ring brazing, reinforced with custom retention rings for high-speed reliability.
Our stator windings use high-grade copper conductors insulated with polyester film and glass fiber tape. The insulation system utilizes high-mica tape impregnated via a computer-controlled Vacuum Pressure Impregnation (VPI) process. The VPI sequence removes air pockets and moisture, creating a solid, void-free structure. This design provides high dielectric strength, thermal dissipation, mechanical resistance to electromagnetic forces, and protection against chemical vapors.
Our motor housings are developed using multi-physics structural and CFD thermal simulations. The frame features cast iron (or fabricated steel) with thick walls to contain internal explosions without rupture or structural deformation. Optimized external cooling fins maximize heat dissipation. This design provides mechanical stability, low vibration, and ample frequency isolation margin under high loads.
Our ventilation systems feature aerodynamically optimized fans inside an engineered silencer cowl. The design incorporates acoustic absorbing materials to suppress high-frequency fan noise without restricting cooling airflow. With IP22 finger-safe protection and a side-intake design, the housing resists blockage even when mounted close to structural barriers or bulkheads.
Our products are certified by international agencies, facilitating seamless project approvals worldwide.
Our plants operate under audited quality processes to ensure tracking and verification for every flameproof component, terminal box seal, and dynamic dynamic balance report.
Certified for hazardous Zone 1/21 and Zone 2/22 operations. The flameproof path geometry, gap depth, and temperature limits meet the EN/IEC 60079 series standards.
Compliant with NEMA dimensions and electrical ratings. Complete verification for UL and CSA listings allows seamless integration into North American heavy industrial installations.
We secure regional approvals including SABS (South Africa), EAC (Eurasian Customs Union), and TESTSAFE (Australia) for underground coal mining and petrochemical projects.
Tracing the technological evolution and brand integration of Wolong Electric.
Wolong acquired 97.94% of the Austrian ATB Group, integrating three major European manufacturers. This integration combined Morley's coal mining expertise with Laurence Scott's low-starting-current technologies, establishing a strong presence in the global heavy industrial market.
Acquiring Brook Crompton added efficient, flameproof motors for harsh environments to the portfolio. Integrating Germany's Schorch Electric (est. 1882) expanded our capabilities in heavy pipeline operations, deep transport tunnels, and offshore petrochemical systems.
Integrating CNE consolidated China's largest explosion-proof research and testing center into the group. This addition expanded our capabilities in custom high-voltage flameproof drivetrains, synthetic testing fields, and large synchronous systems.
Engineered for high reliability under harsh operational conditions.
We supply chemical plants with flameproof motors for high-pressure compressors, feed pumps, and ambient ventilation. These systems prevent vapor ingress, keeping surface temperatures below ignition limits.
Morley and CNE systems are designed for high-stress underground mining equipment. They power heavy armored face conveyors, coal shearers, and ventilation fans under harsh environmental conditions.
Our heavy drive systems power large-diameter tunnel boring machines, high-capacity drainage pumps, and municipal water treatment plants, ensuring reliable continuous operations.
Pioneering the next generation of safe industrial drive systems.
Global regulations require higher motor efficiency to reduce carbon emissions. We are expanding our PM Synchronous (PMSM) lines to meet IE5 efficiency levels, lowering operating costs and thermal losses in hazardous areas.
Our motors can be integrated with vibration, acoustic, and thermal sensors. Real-time diagnostic data helps operators monitor performance, predict wear, and plan maintenance to minimize downtime.
Modern plants benefit from pre-commissioned, variable-frequency drives (VFD). Integrating the motor, VFD, and monitoring diagnostics into a single package simplifies installation and commissioning.
Key criteria for engineers and procurement managers when selecting safety-critical motor partners.
Ensure certification reports from PTB, CSA, Nemko, or TestSafe are valid and current. All customized shafts and enclosures must match the technical specifications in the original certificates.
Verify that the motor's temperature rating (T3 to T6) matches the auto-ignition threshold of ambient gases in the target zone under worst-case overload conditions.
Ensure the VPI insulation system can handle the high-voltage spikes and harmonics generated by variable-frequency drive control systems without degrading.
Work with partners who offer local engineering assistance, commissioning support, and maintenance coordination to ensure smooth long-term operations.
Information on design variations, safety codes, and custom configurations.
Heavy-duty, high-voltage, and custom drive systems for demanding industrial applications.
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