Designed for heavy duty refining, oil & gas distribution, and hazardous offshore setups in the North Sea.
Why specialized explosion-proof electrification is key to the Dutch transition.
The Dutch industrial sector is experiencing a monumental transformation. As home to the Port of Rotterdam—Europe's largest petrochemical hub—and major chemical clusters in Terneuzen, Geleen, and Delfzijl, the Netherlands demand highly sophisticated explosion-proof infrastructure. Transitioning existing assets toward green hydrogen production, carbon capture & storage (CCS) systems (such as the landmark Porthos project), and processing biological hydrocarbons requires robust motor designs that conform strictly to ATEX Directive 2014/34/EU and IECEx global standards.
In hazardous locations where explosive gas atmospheres (Zone 1 and Zone 2, consisting of Group IIA, IIB, and highly volatile IIC hydrogen classifications) or flammable dust (Zone 21 and Zone 22) are present, low-voltage systems fall short. High-voltage (HV) AC motors (typically operating at 3kV, 6kV, 10kV, or 11kV) are mandatory to supply massive mechanical power to large-scale centrifugal compressors, heavy-duty pumps, cooling tower fans, and material handling systems without drawing excessive currents. This mitigates systemic power losses and reduces cable size requirements over vast European production plants.
Corrosive North Sea winds demand specialized C5-M high-durability marine paint systems, space heaters to prevent condensation, and seawater-resistant design elements on increased safety (Ex ec) and flameproof (Ex db) motors.
Complete type-examination certificates from notified bodies like Nemko, DEKRA, and Eurofins. Full traceability of components is guaranteed for compliance in chemical and petrochemical facilities.
Consistent with the European Green Deal and the Dutch climate agreement, high-efficiency ratings drastically lower operating expenses (OPEX) and reduce carbon tax liabilities for industrial operators.
A massive infrastructure of global expertise, specialized brands, and world-class manufacturing bases.
Shaanxi Nanfang Motor Technology Co., Ltd. is the authorized international distributor of Wolong. Founded in 1984, Wolong Electric Drive Group Co., Ltd. was listed on the Shanghai Stock Exchange in 2002 (code SH600580). Over the decades, Wolong has grown to encompass 3 primary manufacturing bases, 39 state-of-the-art factories, and 3 global R&D centers.
Through aggressive and strategic technical integrations, Wolong has consolidated the world's most reputable motor brands. In 2011, Wolong acquired 97.94% of the Austrian ATB Group, which includes legendary British brands like Laurence Scott (famous for low-starting-current naval and nuclear motors) and Morley (renowned for underground mining motors). Furthermore, brands such as Brook Crompton, Schorch (a benchmark for German heavy industries since 1882), OLI (vibration motors), and the industrial drive division of General Electric (GE) have joined the Wolong family.
A deep dive into the engineering parameters that ensure zero ignition risk in high-voltage operations.
The rotor features a highly optimized squirrel cage design. Cast aluminum rotors are produced using centrifugal casting or advanced die-casting techniques, which integrate the rotor bars and end rings into a solid, robust unit. This structural layout provides excellent torque characteristics and durability. For heavy-duty high-voltage machinery, copper bar rotors are utilized, backed by high-quality weld procedures and safety retaining rings to secure execution at high rotational speeds.
Coils are built with glass-reinforced polyester film and high-mica-content tapes. Using the state-of-the-art VPI (Vacuum Pressure Impregnation) process, the finished stator winding exhibits high dielectric strength, moisture resistance, and thermal tolerance. This system meets class F insulation standards with a class B temperature rise margin, which is perfect for continuous, high-load operation in hazardous Dutch industrial areas.
The motor frame is designed using multi-physics structural and fluid dynamic computer simulations. Manufactured from high-strength cast iron or custom steel plates, the outer casing offers robust mechanical protection. It manages high thermal dissipation and features natural frequency margins that isolate structural vibrations, protecting internal bearings from early wear.
Featuring a compact fan hood, guide cylinder, protective mesh, and built-in acoustic silencer plates, the cooling system complies with IP22-IP55 safety standards. The side-inlet air pathway reduces back-pressure and limits aerodynamic noise during operation, creating a safer and quieter workplace in closed facilities.
Ensuring cross-border compliance, absolute safety, and frictionless entry into global hazardous grids.
To overcome strict trade compliance barriers and fulfill safety legislation worldwide, Wolong maintains a broad range of certified products. Our engineering layouts are developed to meet various international standards:
Nemko / ATEX
CSA Standard
CE Compliance
China Compulsory Cert
SABS Approved
TESTSAFE Standard
Full range of medium-to-high voltage flameproof, increased safety, and dust-ignition-proof motors.
Ensuring complete catalog options for standard and customized drive configurations.
Why procurement managers worldwide choose our supply chain solutions.
Historically, purchasing high-voltage motors meant choosing between high-cost European manufacturers or cost-effective options with potential certification hurdles. Wolong's business model combines the best of both worlds. By integrating heritage brands like Schorch, Laurence Scott, and ATB directly into the group, our production lines share European engineering designs, VPI layouts, and quality controls. These are manufactured at scale across our optimized production bases in China.
Optimized supply chain structures and efficient copper and steel procurement yield 20% to 35% savings in upfront capital expenses compared to traditional European-based production.
With global factory networks and dedicated distribution through Shaanxi Nanfang Motor, we handle maritime transportation, customs clearance, and local compliance documentation for the Netherlands.
Our facilities house massive test beds capable of full-load and no-load tests up to 15kV, including vibration, temperature rise, and impulse tests certified by international bodies.
Expert technical answers regarding explosion-proof motors in European and Dutch markets.
Get in touch with our engineering team for customized ATEX/IECEx certified high-voltage motors designed for the Dutch and European markets.
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