Highly customized high-voltage motor variants designed to meet stringent French environmental mandates and industrial safety grids.
Our capabilities are certified by global standards and validated by hundreds of major municipal and chemical plant operations worldwide.
The Greater Paris (Île-de-France) region is leading a significant industrial transformation. Key sectors such as waste-to-energy conversion, chemical treatment systems along the Seine basin, district heating networks, and infrastructure projects like the Grand Paris Express require reliable, large-scale utility operations. In these critical applications, system failures are not an option.
Due to strict European safety policies, all electrical machinery operating in areas containing volatile substances, organic gases, or hydrogen corridors must meet ATEX and CE safety regulations. High-voltage explosion-proof (Ex) motors are essential for driving large water pumps, ventilation systems, compressors, and pipeline networks safely.
We supply high-efficiency, flameproof, and positive pressure motors (Ex d, Ex e, Ex p, Ex n) designed to meet local grid requirements. Our designs deliver high torque, low starting currents, and energy-saving operations to support Paris's decarbonization targets.
Fully certified designs compliant with EN 60079 series standards, guaranteeing safe operation in Zone 1 and Zone 2 gas/dust environments.
Designed to optimize plant efficiency metrics under the Energy Efficiency Directive, saving thousands in annual operational costs.
Leading global drive solutions through strategic acquisitions of European legacy brands.
Shaanxi Nanfang Motor Technology Co., Ltd is the authorized global distributor of Wolong Electric Drive Group Co., Ltd (listed in 2002 under code SH600580). Founded in 1984, Wolong has grown to establish 3 main manufacturing bases, 39 advanced factories, and 3 high-tech R&D centers worldwide.
To strengthen its design capabilities and mechanical engineering, Wolong has completed several strategic international acquisitions:
Acquired in 2011, Austria-based ATB is one of Europe's top three motor manufacturers. This acquisition integrated brands like Morley (underground mining specialists with over 130 years of history) and Laurence Scott (known for low starting current systems used in nuclear facilities and naval vessels).
A historic brand in electric motors with over a century of innovation in motor design. Their expertise helped Wolong build high-efficiency low, medium, and high-voltage AC motors (such as the "W" and "10" series) optimized for harsh industrial environments.
German manufacturer Schorch (established in 1882) joined Wolong in 2011, bringing expertise in large driving systems for petrochemicals and water management. In 2018, General Electric (GE) Industrial Motors joined the group, further strengthening Wolong's global reach.
Our portfolio also includes OLI, a global brand for vibration motors and Ex vibration sensors, and CNE (Nanyang Explosion-Proof Group, acquired in 2015), one of China's largest research and production bases for explosion-proof motors.
Explaining the engineering and high-quality materials behind our explosion-proof motors.
Our rotors feature a robust squirrel-cage design. For smaller applications, centrifugal aluminum casting or die-casting is used to integrate the rotor bars and end rings into a single piece. For larger high-voltage motors, copper bar rotors are used, utilizing reliable bar securing and advanced end-ring welding. A protective ring design is also applied to high-speed motors to ensure operational reliability.
The coils are made from polyester film reinforced with glass cloth and high-content mica tape. The stator undergoes a Vacuum Pressure Impregnation (VPI) process to create a dense, moisture-resistant, and high-dielectric winding. This design provides high insulation resistance, excellent mechanical strength, and reliable thermal stability during operation.
The motor frames are developed using structural and fluid multi-physics simulations to optimize heat dissipation and mechanical rigidity. Built from high-strength cast iron (with steel options available), the frame design minimizes vibration and helps keep motor temperature rises well within thermal class margins.
This system includes a dynamic fan cover, air guide cylinder, protective window, and silencer plate. The side-entry air inlet design optimizes airflow pathways and reduces energy loss and noise. The sound-absorbing materials inside help lower operational decibels, and the hood carries an IP22 safety rating to prevent accidental contact with the fan.
Helping you navigate international trade requirements with fully certified equipment.
Nemko / ATEX
CSA
CE
CCC
SABS
TESTSAFE
We maintain a comprehensive certification strategy to support global projects and local safety compliance:
How we align high-voltage motor designs with global carbon neutrality and smart factory initiatives.
We are working to transition our standard induction models to IE4 and IE5 levels by using advanced electromagnetic designs and permanent magnet (PM) synchronous systems, helping industrial plants reduce overall energy consumption.
Integrating IoT vibration, temperature, and current sensors directly into the motor frames allows for predictive maintenance, helping operators monitor motor health and prevent unplanned downtime.
Our manufacturing processes focus on using recyclable copper, low-impact steel laminations, and lead-free insulation coatings to support corporate environmental and social responsibility (ESG) goals.
Technical information regarding product installation, local compliance, and shipping logistics.
Explore our full range of certified high-voltage and flameproof motor solutions.
Our engineering team is ready to design motor solutions that align with your specific ATEX requirements, voltage levels, and space constraints.
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