CE Certification Large Power Synchronous Motor Suppliers & Factory

Premium Synchronous & High-Performance Motors (Part I)

Explore our certified portfolio of heavy-duty industrial electric motors engineered for hazard-proof operations, critical ventilation, mining, and high-efficiency systems.

WOLONG TAW series brushless synchronous motor

CE Certification WOLONG Nanyang ATB brand TAW series (new generation) increased safety brushless excitation three-phase synchronous motor Factory, Exporter

Brushless Excitation View Details →

Wolong YBBP low voltage explosion proof motor

High-Quality Wolong Nanyang YBBP series low voltage variable frequency explosion-proof three-phase asynchronous motor Manufacturers, Factory

Explosion Proof View Details →

WOLONG High-voltage Non-sparking Induction Motor

OEM WOLONG Nanyang ATB brand YWKK、YWKS High-voltage Non-sparking Three-phase Induction Motor(frame size 315～630) Factory, Companies

High Voltage Non-sparking View Details →

WOLONG YBSS flameproof asynchronous motor for conveyor

OEM WOLONG Nanyang ATB brand YBSS series flameproof three-phase asynchronous motor for conveyor Suppliers, Factories

Mining & Conveyors View Details →

CE Certification WE4 Series High-Performance low voltage Asynchronous Motor Factories, Exporters

CE Certified WE4 View Details →

WOLONG YBX4 low voltage explosion proof ac motor

OEM WOLONG Nanyang YBX4 series low voltage super high efficiency explosion-proof AC asynchronous three-phase motor. Manufacturer, Exporter

Super Efficiency YBX4 View Details →

OEM Wolong Nanyang ATB brand Y YX series high voltage three-phase AC motor Supplier, Companies

High Voltage Y YX View Details →

WOLONG YBXKK high voltage explosion proof motor

CE Certification WOLONG Nanyang ATB brand YBXKK High-Voltage High-Efficiency Explosion-Proof Electric Motor Manufacturers, Suppliers

Explosion Proof Ex d View Details →

ABOUT NANFANG MOTOR & WOLONG GROUP

Shaanxi Nanfang Motor Technology Co., Ltd is the authorized distributor of Wolong. Wolong Electric Drive Group Co., Ltd was founded in 1984 and successfully listed on the Shanghai Stock Exchange in 2002 (code SH600580).

After more than 30 years of rapid development, Wolong has established 3 core manufacturing bases, 39 advanced factories, and 3 global R&D centers worldwide. Wolong focuses heavily on the design and manufacture of high-efficiency motors and digital control systems, committing to a global brand strategy that positions it as an industry leader in R&D, safety certification, and process optimization.

100+

Production Lines

58+

Export Countries

32+

Global Patents

200+

Key Infrastructure Projects

Large Power Synchronous Motors: Strategic Industry Trends

Analyzing global market shifts, technical standards, and high-efficiency solutions required by heavy industries today.

1. The Evolution of Synchronous Drive Systems in Heavy Infrastructure

Large power synchronous motors are the workhorses of global heavy industries, playing a vital role in operations where torque consistency, high power output, and continuous duty cycles are mandatory. Unlike asynchronous systems, synchronous motors operate at a constant speed independent of the load, making them ideal for heavy compressors, pulp refiners, large ventilation fans, and water pumps.

Today's industrial plants face the dual pressure of carbon mitigation policies and soaring grid transmission costs. In response, modern engineering design centers prioritize power factor correction directly at the motor level. Large power synchronous motors can operate at unity or even leading power factors, acting as rotative capacitors to stabilize local grids and eliminate reactive power penalties.

2. Global Procurement Needs & Supply Chain Resilience

Global procurement divisions within the oil & gas, chemical processing, and mining sectors demand more than raw horsepower. They require complete alignment with global directives (such as Europe's CE compliance, North America's IEEE/NEMA, and APAC's local mining safety standards). Wolong addresses this through a consolidated global network, providing standardized parts, interchangeable frame designs, and certified explosion-proof configurations.

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ATEX/IECEx/EAC Certified

Complete compliance coverage for hazardous locations worldwide. Our products are rigorously certified to guarantee maximum operation safety in volatile dust and gas environments.

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Energy Saving (IE4/IE5)

Engineered to deliver high efficiencies that meet or exceed standard requirements. We also supply permanent magnet synchronous options to minimize lifecycle operational costs.

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Diversified Product Lines

Rich and highly optimized design envelopes that cover non-sparking, flameproof, variable frequency, and positive pressure configurations for various heavy operations.

Global Technological Integration & Brand Heritage

How Wolong incorporated century-old premium manufacturers to create a synergistic, world-class motor engineering powerhouse.

Accumulated with abundant assets and brilliant experiences in manufacturing, WOLONG started to reach for higher global achievements. To position itself as the leading manufacturer of AC motors and drives worldwide, the corporation actively acquired several premium overseas manufacturing groups:

ATB (Austria)

Morley (United Kingdom)

Laurence Scott (UK)

Brook Crompton

Schorch (Germany)

OLI (Italy)

Nanyang Explosion-Proof (CNE)

GE Industrial Motors (USA)

Key Milestones & Brand Synergies

In 2011, Wolong successfully acquired 97.94% of the Austrian ATB Group, which includes the iconic brands Morley (specialists in harsh-environment mining drives for 130 years) and Laurence Scott (well-known for low starting current systems and naval grade electric generators). Following this integration, the company received the prestigious Queen's Award for Enterprise for three consecutive years.

Brook Crompton Motors also became part of the Wolong family, bringing over a century of low, medium, and high voltage AC motor design mastery. In the same year, German heavyweight Schorch brought its heavy oil & gas and petrochemical project engineering legacy to Wolong.

In 2015, China's largest explosion-proof electric motor base, Nanyang Explosion-Proof Group (CNE), formally joined Wolong. In 2018, General Electric (GE) commercial and industrial motor division integrated into Wolong, consolidating its position in advanced global industrial automation.

Mechanical Anatomy of Wolong Synchronous & Induction Motors

A deep dive into structural component engineering, thermal validation, and multi-physics field simulations.

Advanced Rotor System Design

The rotor features the 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.

For larger capacity motors, high-grade copper bar rotors are employed, which benefit from dependable bar securing and advanced end-ring induction welding procedures. Additionally, the protective ring design of high-speed motors further ensures the reliable operation of the copper bar rotor under extreme radial forces.

Stator Coil Winding & VPI Technology

The stator coil is crafted from high-performance polyester film and reinforced with glass cloth, utilizing either low-powder mica tape with a high mica content or medium-powdered mica tape with an abundance of mica.

Following the VPI (Vacuum Pressure Impregnation) process, a pristine white coil emerges from the production line, curing into a dense, solid, void-free insulation structure. The winding and insulation are meticulously engineered to provide exceptional electrical performance, mechanical strength, resistance to moisture, and long-term thermal stability under class F or H limits.

Digitally Modeled Heavy-Duty Frame

The motor frame employs a fully digital platform for structural and fluid multi-physics field simulations. This advanced simulation platform retains the original patents' structures and designs, utilizing mature, high-strength cast iron (or structural 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 low vibration level, and ensure lower temperature increases in the core elements of the motor.

Acoustically Optimized Fan Hood System

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, lowering the overall motor noise. Additionally, the fan cover is rated IP22, ensuring that hands cannot come into contact with the rotating fan assembly.

Global Standards & Safety Compliance

Our motors undergo continuous quality audits to guarantee seamless market access and operating permits across the globe.

Nemko / ATEX

CSA

CE Certification

CCC

SABS

TESTSAFE

Adhering to a comprehensive marketing strategy for electric motors across the entire industry chain, Wolong has secured critical international certifications:

ISO Standard: Wolong is an ISO 9001 certified Ex-motor manufacturer. ISO standard compliance has evolved into a critical gateway to surmount trade barriers and penetrate international EPC projects.
NEMA Standard: To confirm our motors meet NEMA mechanical performance specifications, we conduct rigorous efficiency, insulation resistance, starting current, torque, and sound level validation tests. For low-voltage motors, Wolong has acquired the UL and CSA certificates.
IECEx & ATEX: Mandatory for low, medium, and high-voltage explosion-proof motors operating in gaseous oil refineries and European chemical industries.
TESTSAFE: As the largest coal product certification body in the Southern Hemisphere, TestSafe certificate acquisition enables Chinese coal mining motors to enter Australia and similar demanding resource markets seamlessly.

Localized Support & Global Compliance Framework

Operating large-scale synchronous motors requires close technical cooperation from initial design stages to final commissioning. Through Shaanxi Nanfang Motor Technology Co., Ltd and Wolong's global branch networks, plant operators receive local engineering support, custom retrofits, and spare parts supply chains.

Whether aligning your machinery with EU CE directives, North American NEC regulations, or ATEX explosion-proof zones, our engineers provide complete document validation, electrical parameters testing, and certified installation audits. This keeps system downtime to a minimum and guarantees immediate safety compliance.

Technology Roadmap: Next-Generation Electric Drives

How we are combining IoT-enabled diagnostics, permanent magnet integration, and high-frequency control technologies.

As industrial digitalization continues to accelerate, the requirements for large power motors are shifting towards smart predictive maintenance and integrated variable frequency speed control. Wolong's R&D centers in China, Europe, and Japan are focusing on three key technology pillars:

Integrated Vibration & Temperature Diagnostics: Implementing Ex-certified wireless vibration sensors and real-time winding temperature monitoring to predict maintenance windows and prevent catastrophic insulation failures.
Permanent Magnet Hybridization: Combining standard synchronous motor principles with high-flux density permanent magnet rotors (PMSM) to deliver exceptional part-load efficiencies and higher torque-to-weight ratios.
Optimized VFD Integration: Synchronous motors require precise variable frequency regulation for startup and speed optimization. Through Schorch and ATB drive packages, we deliver pre-tested motor-drive configurations that eliminate harmonic degradation and high starting current issues.

Frequently Asked Questions & Technical Insights

Get answers to common queries regarding large synchronous motor selection, certifications, and maintenance.

Why choose a synchronous motor over an induction motor for large power applications?

Large power synchronous motors offer superior efficiency (often exceeding 97%) and are highly capable of power factor correction. They run at constant speeds regardless of load, making them ideal for high-torque, low-speed heavy industrial applications such as ball mills, large compressors, and main ventilation drives.

What does CE certification guarantee for a high-power industrial motor?

CE certification proves the motor complies with all applicable European Union health, safety, and environmental protection directives. For high-power motors, this includes compliance with the Low Voltage Directive (LVD), Electromagnetic Compatibility (EMC) Directive, and, where applicable, the ATEX Directive for hazardous environments.

How does brushless excitation benefit the Wolong TAW series?

Brushless excitation eliminates slip rings and carbon brushes. This minimizes routine maintenance, removes spark hazards in hazardous areas, and ensures higher operational reliability in environments filled with dust, gas, or moisture.

What safety standards apply to explosion-proof motors in chemical processing plants?

Chemical processing operations typically require motors that comply with ATEX Zone 1 or Zone 2, and IECEx certifications. These certifications ensure that the motor housing can either contain an internal explosion (Ex d flameproof) or prevent any ignition source (Ex e increased safety, Ex p positive pressure).

How does Shaanxi Nanfang Motor Technology Co., Ltd coordinate localized shipping and support?

As Wolong's authorized distributor, we coordinate global logistics, custom custom-duty documentation, compliance certifications, and localized after-sales engineering. This ensures your motor is delivered on time and operates in accordance with local grid requirements and safety parameters.