Explore our highly recognized standard low-voltage motor lines engineered for reliable operations under intense duty cycles and aggressive environments.
We are the premier authorized distributor of Wolong Electric Drive Group Co., Ltd. founded in 1984 and listed on the Shanghai Stock Exchange in 2002 (code SH600580). Over four decades of continuous precision engineering and technological expansion, Wolong has solidified its status as an international titan in advanced motor and control systems manufacturing.
By implementing a proactive global brand integration and R&D strategy, Wolong oversees 3 strategic manufacturing bases, 39 advanced factories, and 3 state-of-the-art research centers globally. Through Nanfang Motor Tech, global buyers gain direct access to industry-defining electrical drive engineering, combining low-voltage motor expertise with localized engineering compliance systems.
Through strategic acquisitions, Wolong has integrated a century of international electric motor engineering expertise, consolidating premier heritage brands to serve specific heavy industry verticals.
Acquired in 2011, ATB (Austrian ATB Group) is one of the three major European motor manufacturers. Wolong successfully acquired 97.94% of the ATB Group, integrating top-tier European technology. The acquisition includes highly respected brands like Morley for harsh mining operations and Laurence Scott for specialized, high-reliability machinery.
Morley has a nearly 130-year legacy of engineering flameproof coal mining motors. Laurence Scott, a pioneer in powering British nuclear power plants and navy vessels, specializes in low-starting-current configurations, having earned the prestigious Queen's Award for three consecutive years.
Boasting over a century of mastery in motor design, Brook Crompton is a pioneer in creating high-efficiency industrial low-voltage and medium-voltage AC motors. Its popular "W" and "10" series provide energy-saving drive packages for harsh and hazardous environments.
Established in Germany in 1882, Schorch joined Wolong in 2011. Renowned globally for high-quality driving systems, Schorch specializes in customized machinery for oil & gas, chemicals, water treatment, metal processing, and transport tunnels.
As a global leader in high-performance vibration technology (MVE series) and Ex-certified vibration sensors, OLI partnered with Wolong in China in 1999 to establish a dominant market presence for industrial vibration systems.
In 2018, Wolong acquired the commercial and industrial motor division of General Electric (GE), gaining advanced manufacturing techniques, high-specification technical portfolios, and extensive North American distribution channels.
We deliver specialized low-voltage AC motor configurations designed to meet specific engineering criteria across global key industries.
Certified by ATEX, IECEx, and EAC, our YE3, YE5, and YB3 lines offer robust explosive gas (Zone 1/21, Zone 2/22) protection. Engineered for coal mines, petroleum refineries, and chemical processing facilities, these flameproof drives prevent internal ignition from escaping into hazardous volatile atmospheres.
Our YQ series low-voltage marine motors feature DNV, Lloyd's, ABS, and BV type approvals. Coated with marine-grade C5-M anti-corrosion protection and fitted with condensation heaters, these motors are built to withstand high salinity, moisture, and extreme tilt angles on ships and drilling rigs.
Optimized for continuous duty (S1) operation under variable load cycles, our WE3 and WEPM series provide high-efficiency water management. Engineered to pair with Variable Frequency Drives (VFDs), they deliver precise flow control for municipal wastewater facilities and massive irrigation infrastructure.
Providing Cost-Effective Premium Engineering through Advanced Automation
Operating out of highly digitized factories in China (such as the main Nanyang and Shangyu bases), Wolong has deployed advanced Factory 4.0 automation. This includes robot-assisted winding, fully computerized stator insulation varnishing, dynamic rotor balancing, and automated performance testing cells.
By sourcing high-grade domestic materials (such as cold-rolled non-oriented silicon steel sheets and premium 99.99% pure copper coils) directly from integrated domestic suppliers, we maintain stable production cycles. This protects our clients from global copper or steel supply chain disruptions and ensures rapid turnaround times.
A deep dive into the structural materials and design innovations that ensure our AC low-voltage motors deliver outstanding thermal efficiency and reliability.
The rotor features a squirrel cage design, utilizing cast aluminum produced via centrifugal casting or die-casting. Molten pure aluminum is poured into the slots of the rotor core, forming integrated rotor bars and end rings. This single-piece construction guarantees structural integrity, reliability, and excellent torque properties.
For larger capacities, copper bar rotors are used. These feature welded copper bars and end rings, secured with dynamic structural protective rings to ensure safe operation at high speeds.
Winding coils are crafted from premium polyester film reinforced with glass cloth. We use low-powder or medium-powder mica tape with high mica content, followed by a state-of-the-art Vacuum Pressure Impregnation (VPI) process.
This process eliminates air pockets within the stator slots, providing exceptional electrical performance, mechanical strength, moisture resistance, and thermal stability. The insulation system is rated Class F (155°C) or Class H (180°C) with a Class B temperature rise limit.
Designed using multi-physics structural and fluid dynamic simulation platforms, our motor frames are cast from high-tensile cast iron or welded structural steel. They feature optimized cooling rib spacing for efficient heat dissipation.
The frame structures are designed with high vibration-isolation margins and mechanical shock resistance, keeping operational vibration levels well within the strict limits of ISO 10816 standards.
The low-noise ventilation system includes an optimized fan cover, an air guide cylinder, a protective screen, and integrated acoustic silencer plates. The side-entry air intake configuration avoids obstacles behind the motor, minimizing air restriction and turbulent flow noise.
Lined with sound-absorbing material and rated IP22, the fan hood prevents finger contact with rotating blades while maintaining optimal thermal cooling airflow.
We maintain a comprehensive certification portfolio to simplify regulatory approval processes across global markets.
Our commitment to global standards is reflected in our certifications:
Innovating low-voltage drivetrain technology to meet the performance and sustainability needs of future industrial operations.
As international efficiency standards transition from IE3 to IE4 and IE5, our R&D centers are focused on refining synchronous reluctance (SynRM) and PM-assisted motors. These technologies eliminate rotor winding copper losses, reducing energy consumption by up to 20% compared to standard induction motors.
We are integrating IoT-enabled smart sensors directly into the non-drive end housing of our low-voltage motors. These sensors monitor temperature, vibration frequencies, and phase currents in real-time, sending data to cloud networks to enable predictive maintenance and minimize unexpected downtime.
We are reducing the carbon footprint of our manufacturing process. This includes using recycled aluminum for rotor casting, implementing solvent-free insulating varnishes, and utilizing highly recyclable structural steel for our frames.
We streamline procurement for global EPC contractors, systems integrators, and OEM equipment manufacturers.
| Procurement Parameters | Standard Specifications | Custom / Severe Duty Options |
|---|---|---|
| Frame Sizes | IEC 80 to 355M/L | NEMA 140T to 449T | Custom structural dimensions and shaft geometries |
| Voltage & Frequency | 230/400V, 400/690V (50Hz) | 460V, 575V (60Hz) | Multi-voltage configurations, 50/60Hz dual rating |
| Duty Ratings | Continuous S1 Duty | Intermittent S2 to S8 cyclic duty ratings |
| Cooling Methods | TEFC (IC411) | TEAO (IC416) forced ventilation for VFD drives |
| Bearing Systems | NSK / SKF sealed deep-groove ball bearings | Re-greasable insulated bearings to block shaft currents |
We provide full technical documentation, including STEP/DWG 3D CAD models, complete electrical data sheets, dynamic torque curves, and certified test reports. Our engineering team assists with VFD matching, vibration analysis, and field commissioning to ensure seamless integration.
Technical answers to key engineering and procurement questions regarding low-voltage AC electric motors.
Browse our robust portfolio of high-temperature, permanent magnet, variable frequency, and marine-certified AC motor solutions.
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