Engineered for immediate integration within Osaka's petrochemical plants, heavy manufacturing facilities, and global export hubs.
The Kansai Metropolitan area, with Osaka at its industrial core, stands as one of the world's most sophisticated hubs for advanced chemical refinement, cryogenic gas logistics, and precision mechanical engineering. As international plant operators seek to upgrade aging safety frameworks, the requirement for explosion-proof machinery that meets the dual demands of zero-ignition hazard tolerances and energy efficiency has surged.
In explosive gas atmospheres—ranging from oil refining complexes on the coastal strips of Sakai to modern hydrogen fueling facilities—medium and high-voltage AC motors are the primary power producers. These high-voltage systems (ranging from 3kV to 13.8kV) must operate under extremely hazardous classifications without compromising structural integrity or electrical performance. The intersection of strict local safety laws (JIS/JNIOSH) and international compliance structures (ATEX, IECEx) defines the modern machinery landscape of Osaka's supply chain.
By matching Global Wolong manufacturing with specialized Osaka support, procurement leads receive both localized customization and massive manufacturing scale.
Authorized Global Distributor of the Wolong Electric Drive Group
As the authorized sales arm and tech integration partner for Wolong, Shaanxi Nanfang Motor Technology Co., Ltd connects top-tier engineering resources to heavy industries worldwide. Wolong Electric Drive Group Co., Ltd, founded in 1984 and listed in 2002 (SH600580), has built a massive global footprint comprising 3 manufacturing bases, 39 factories, and 3 R&D centers, making it a key force in the motor and control systems market.
Production Facilities
Export Countries
Global Patents Held
Major Projects Run
Integrating century-old European and American design expertise with high-volume digital manufacturing systems.
Comprises industry leaders like Morley (nearly 130 years of underground coal mining expertise) and Laurence Scott (low starting current technology for nuclear power and naval vessels).
Venerable German and British brands dating back to 1882. Industry standards for petrochemical, oil & gas, steel, water treatment, and extreme variable-speed drive operations.
China's largest explosion-proof motor research and manufacturing base. Widely utilized in nuclear installations, military hardware, and global oil and gas logistics.
Overcoming installation, efficiency, and compliance challenges in hazardous chemical processing environments.
Multi-regional certifications mapping compliance targets to global standards. Covers Ex d (Flameproof), Ex p (Pressurized), Ex e (Increased Safety), and Ex n (Non-sparking).
Advanced electromagnetic design minimizing power losses. High-voltage PM (Permanent Magnet) hybrid systems are available to deliver high torque with lower electrical consumption.
Ranging from medium-voltage fan motors to synchronous condenser systems for grid stabilization. Specifically configured for Zone 1, Zone 2, Zone 21, and Zone 22 applications.
Integrating global manufacturing systems with century-old engineering brands.
Establishment of European electrical engineering baselines. Pioneer work on early three-phase systems and industrial power transmission.
Focus shifts toward global commercialization, introducing modern automation systems into manufacturing sites.
Wolong acquires ATB Group, integrating Morley's mining expertise and Laurence Scott's low-starting-current technologies.
Unites China's largest explosion-proof design labs with Wolong's international distribution framework, creating a global manufacturing platform.
Wolong acquires GE's commercial and industrial motor division, providing access to North American markets and NEMA design technology.
Detailed view of components engineered to perform under massive thermo-mechanical loads.
The rotor features a squirrel cage design, with cast aluminum rotors being widely utilized. These rotors are produced using either centrifugal aluminum casting or die-casting techniques, where molten pure aluminum is poured into the slots of the rotor core, resulting in a single-piece construction that integrates the rotor bars and end rings. The structural integrity and manufacturing process of cast aluminum rotors guarantee reliability, and also endow the motor with excellent starting torque properties. For larger capacity motors, copper bar rotors are employed, which benefit from dependable bar securing and end ring welding procedures. Additionally, the protective ring design of high-speed motors ensures the reliable operation of the copper bar rotor.
The coil is crafted from polyester film and reinforced with glass cloth, utilizing either low-powder mica tape with a high mica content or medium-powdered mica tape. Following the VPI (Vacuum Pressure Impregnation) process, a pristine white coil insulation structure is formed. The winding and insulation are meticulously engineered to provide exceptional electrical performance, high mechanical strength, resistance to moisture, and thermal stability in toxic environments.
The motor frame employs a fully digital platform for structural and fluid multi-physics field simulations. This simulation platform retains the original patent's structure and design, utilizing mature, high-strength cast iron (or steel as an alternative). The frame boasts exceptional structural redundancy, outstanding heat dissipation properties, and ample inherent frequency isolation margins for the entire machine. It is engineered to endure significant mechanical shocks, maintain a superior vibration level, and ensure a lower temperature increase in the motor.
The low-noise fan cover system comprises a fan cover body, an air guide cylinder, a protective window, and a silencer plate. Its compact structure and lightweight design facilitate vibration reduction. The air inlet is situated on the side, which optimizes the avoidance of obstacles behind the motor, minimizing adverse effects on ventilation and reducing noise caused by energy loss during propagation path changes. The system also incorporates sound-absorbing materials that absorb noise, thereby lowering the overall motor noise. Additionally, the fan cover is rated IP22, ensuring that hands cannot come into contact with the fan.
Eliminating trade barriers and ensuring plant-level safety across global jurisdictions.
Essential compliance for EU hazardous zones.
Standard compliance for Canadian oil sands and processing sites.
Declaration of conformity with all EU direct safety regulations.
Safety testing for Southern African industrial sectors.
Our comprehensive marketing strategy spans the entire industrial chain, securing certifications that enable penetration into highly regulated international markets. From ISO 9001 quality management standards to NEMA performance metrics (validated via starting current, torque, and insulation tests), our processes are fully documented. For low and high-voltage explosion-proof applications, our motors hold valid IECEx and ATEX certificates. Additionally, the acquisition of the TESTSAFE standard (the premier mining certifier in the Southern Hemisphere) establishes a solid foundation for supplying coal mining drives directly to Australia and related international markets.
A comprehensive selection of synchronous, asynchronous, and increased safety designs for modern industrial infrastructure.
Technical specifications comparing primary protection topologies for procurement engineering planning.
| Protection Code | Methodology | Common Frame Sizes | Applicable Zones | Standard Efficiency Class |
|---|---|---|---|---|
| Ex d (Flameproof) | Contains internal explosion; prevents propagation. | 355 – 630mm | Zone 1, Zone 2 | IE3 / IE4 |
| Ex p (Pressurized) | Maintains positive pressure with inert gas/clean air. | 450 – 1000mm | Zone 1, Zone 2 | IE4 / IE5 |
| Ex e (Increased Safety) | Prevents arcs, sparks, and hot spots during operation. | 315 – 560mm | Zone 2 (Zone 1 under strict limits) | IE3 |
| Ex n (Non-Sparking) | Designed to prevent ignition during normal running. | 315 – 630mm | Zone 2 Only | IE3 / IE4 |
Key technical and regulatory answers for procurement heads and plant engineers.
Ex d (flameproof) structures feature robust cast frames designed to contain an internal explosion without allowing sparks to escape. In contrast, Ex p (pressurized) systems maintain positive pressure within the enclosure using inert gas or clean air, preventing explosive external gases from entering the motor casing.
We work directly with industrial users in Osaka, coordinating customs clearances, providing full JIS/JNIOSH alignment reports, and supplying complete manufacturing records (including VPI curing certificates, balancing reports, and pressure testing details) to meet local engineering standards.
The VPI process removes air pockets within the stator winding matrix, replacing voids with solventless resin. This enhances dielectric strength, optimizes thermal dissipation, and prevents moisture entry—crucial for offshore platforms and damp coastal chemical facilities.
Yes, series like the YBBPX are specifically designed for VFD operation. They are built with insulated non-drive end bearings to eliminate shaft currents, along with reinforced winding configurations to withstand high dv/dt voltage spikes from modern PWM drives.
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