CE Certification Frequency Motor Factories & Company

Pioneering High-Efficiency VSD Solutions, Global Explostion-Proof Rigor, and Industry 4.0 Supply Chain Integration

Featured Variable Frequency & Explosion-Proof Motor Portfolio

Engineered for hazardous zones, heavy industrial automation, and extreme environments with full compliance certifications.

WOLONG YBSS Series Flameproof Motor
OEM WOLONG Nanyang ATB brand YBSS series flameproof three-phase asynchronous motor for conveyor Suppliers, Factories
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OEM Wolong Nanyang ATB Y YX Motor
OEM Wolong Nanyang ATB brand Y YX series high voltage three-phase AC motor Supplier, Companies
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WOLONG YBF series fans motor
CE Certification WOLONG Nanyang ATB brand YBF series fans high voltage flameproof three-phase asynchronous motor Manufacturers, Supplier
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WOLONG YBX4 Low Voltage Motor
OEM WOLONG Nanyang YBX4 series low voltage super high efficiency explosion-proof AC asynchronous three-phase motor. Manufacturer, Exporter
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WOLONG YBS series conveyor motor
High-Quality WOLONG Nanyang ATB brand YBS series conveyors Flameproof 3 phase asynchronous induction motor Supplier, Factories
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WOLONG YBX5 ultra-high efficiency motor
CE Certification Wolong Nanyang YBX5 series low voltage ultra-high efficiency explosion-proof three-phase asynchronous motor Factory, Companies
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WOLONG TBVF series motor
CE Certification WOLONG Nanyang ATB brand TBVF series China three-phase permanent magnet Ex synchronous vsd mine motor Manufacturer, Exporter
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YE3 Series Explosion-Proof Motor
CE Certification YE3 Series Low-Voltage And High-Efficiency Explosion-Proof Three-Phase Asynchronous Motor Company, Companies
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Executive Whitepaper: The Evolution of Variable Frequency Motors

Analyzing global market dynamics, European CE compliance, and the structural pivot toward decarbonization.

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Global Market Decarbonization & IE5 Transition

In the wake of global energy audits and strict ESG targets, the industrial manufacturing sector is discarding obsolete, fixed-speed drivetrains. Modern industries demands speed regulation through VSD (Variable Speed Drive) frequency motors. Moving from IE3 efficiency to IE4 and the bleeding-edge IE5 permanent magnet standards represents more than a compliance strategy—it is a critical tool for minimizing operational expenditures (OPEX). Incorporating variable frequency control allows systems to draw power proportionate to load dynamics, minimizing energy dissipation by up to 50% in variable torque systems like industrial fans and pumps.

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Strict Safety Protocols: CE, ATEX, & IECEx Integration

CE Certification serves as the baseline regulatory passport for the European Economic Area. However, when deploying variable frequency motors within explosive dust or gas atmospheres (such as refineries, petrochemical hubs, and deep-vein coal mines), standard electrical compliance is insufficient. Equipment must feature robust explosion-proof architecture. Safety standards mandate rigorous thermal isolation, flamepath containment, and transient current mitigation. In this regard, combining ATEX and IECEx directives ensures that VFD-driven high-voltage motors operate safely despite harmonic variations and high thermal stress.

ABOUT SHANXI NANFANG MOTOR & WOLONG GROUP

Connecting Global Engineering Heritage with Modern Smart Manufacturing Platforms

Shaanxi Nanfang Motor Technology Co., Ltd serves as 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), Wolong has advanced the boundaries of electric machine design for over three decades.

Today, Wolong operates a dynamic network of 3 key manufacturing bases, 39 advanced factories, and 3 global R&D centers. By prioritizing international expansion, Wolong integrates legendary European and American electric brands under one technological umbrella, providing unmatched research, design, manufacturing, and distribution capabilities worldwide.

100+ Production Lines
58+ Export Countries
32+ Global Patents
200+ Major Key Projects

Industrial Heritage: Legendary Brands Consolidated under Wolong

Combining over a century of European, American, and Asian engineering expertise to deliver robust drivetrain systems.

ATB Group (Morley & Laurence Scott)

Acquired in 2011, Austria-based ATB is a pioneer in European motor design. It includes Morley Motors, with a 130-year legacy in coal mining equipment, and Laurence Scott, famous for low starting current machinery engineered for nuclear power plants and navy vessels.

Brook Crompton & Schorch Motors

Brook Crompton is a leader in energy-efficient motor design. In 2011, Schorch brought over 135 years of high-voltage drivetrain experience, specializing in heavy-duty oil & gas, municipal water infrastructure, and tunnel exhaust operations.

GE Industrial Motors & CNE (Nanyang)

Wolong integrated the commercial and industrial division of General Electric (GE) in 2018. Additionally, the strategic alliance with CNE (China National Explosion-Proof Motor) in Nanyang established China’s largest manufacturing base for explosive-atmosphere machines.

China Factory 4.0: Supply Chain Resilience and Global Delivery Logistics

Global procurement specialists face growing challenges, including raw material cost volatility, transport blockages, and shifting geo-economic policies. Shaanxi Nanfang Motor and Wolong mitigate these risks through advanced digital supply chain frameworks and automated manufacturing systems.

Through China Factory 4.0 initiatives, our plants use digital twin technology, real-time materials tracking, and robotic assembly systems. This smart infrastructure ensures consistent coil winding tension, defect-free vacuum pressure impregnation (VPI), and precise balancing of cast aluminum and copper rotors. By manufacturing structural components in-house, we remain independent of external supplier bottlenecks, guaranteeing dependable lead times and stable pricing for large-scale global projects.

Technical Specification & Design Architecture

An inside look at our advanced engineering, simulation models, and material science choices.

High-Efficiency Motor Rotor Manufacturing

Advanced High-Strength Rotor Systems

Our squirrel-cage rotors feature precision centrifugal cast aluminum or advanced die-cast alloys, ensuring a robust, integrated component. For large-scale or high-torque operations, we construct rotors with oxygen-free copper bars secured by advanced welding and dynamic reinforcement rings. This prevents thermal deformation, reduces vibration, and provides reliable startup torque when paired with modern variable frequency drives (VFD).

VPI Impregnated Stator Winding Systems

Stator coils are wrapped with multiple layers of high-grade polyester film and glass-reinforced mica tape. These assemblies undergo a rigorous Vacuum Pressure Impregnation (VPI) cycle using premium solvent-free resins. This creates a solid structure resistant to moisture, high temperatures, chemical corrosion, and mechanical vibrations, protecting against corona breakdown caused by high VFD switching frequencies.

VPI Stator Insulating Winding
Digital Platform Cast Iron Motor Frame

FEA Optimized Heavy-Duty Frame

Using finite element analysis (FEA) and fluid multi-physics simulations, our high-tensile cast iron and steel frames feature optimal cooling fin profiles. This structural design offers high structural margins, excellent heat dissipation, and minimizes acoustic resonance, allowing the frame to easily withstand heavy mechanical shocks in tough mining and industrial applications.

Low-Noise Aerodynamic Fan Hoods

Equipped with internal air guides, silencer plates, and vibration-isolated mountings, our low-noise fan assemblies deliver high cooling airflow while minimizing acoustic levels. With an IP22 protection rating, the inlet screens keep out debris and protect maintenance personnel, ensuring reliable performance in dust-heavy environments.

Low Noise Fan Cover Assembly

Global Standards Compliance & Certifications

Enabling seamless integration into global markets with recognized testing protocols.

To support global trade, Wolong and Shaanxi Nanfang Motor verify all equipment performance against major international standards:

  • ISO 9001: Validates quality control systems across manufacturing, testing, and service pipelines.
  • NEMA Standards: Ensures mechanical and electrical compliance for North American operations, verified via strict insulation and dynamic torque testing.
  • IECEx & ATEX: Confirms explosion-proof safety for variable frequency and high-voltage motors deployed in European and international hazardous zones.
  • TESTSAFE Standard: Facilitates export certification for mining equipment operating in Australia and the Southern Hemisphere.
Nemko/Atex Certification

Nemko / ATEX

CSA Certificate

CSA Group

CE Certificate

CE Mark

CCC Certificate

CCC

SABS Certificate

SABS

TESTSAFE Certificate

TESTSAFE

Localized Applications & Environmental Engineering

Drivetrain solutions designed for optimal performance under challenging operating conditions.

Petrochemical & Natural Gas Pipelines

Operating in environments filled with volatile gases requires spark-free, flameproof, and positive pressure enclosures. Our YBBPX and NEXP series motors drive pipeline compressors and processing pumps safely, adapting to shifting system loads without creating heat spikes.

Heavy Mining & Conveyors

Underground mining operations present challenging conditions: abrasive coal dust, moisture, and high starting loads. Brands like Morley and series like YBSS and YBSD deliver the necessary torque control, mechanical endurance, and high thermal capacity to keep deep-shaft operations running smoothly.

Power Generation & Nuclear Safety

Providing custom low-starting-current auxiliary equipment for nuclear and conventional thermal plants, our motors maintain structural integrity and system reliability, helping utility operations avoid unexpected grid stress or downtime.

Frequently Asked Questions

Essential guidance on CE compliance, VFD integration, and global shipping options.

How does CE certification affect frequency motors in explosive industrial zones?
CE certification ensures that the motor meets European health, safety, and environmental protection standards. For explosive zones, it must be paired with ATEX directives, specifying temperature limits and spark-prevention measures under varying variable frequency drive (VFD) frequencies.
What are the advantages of copper bar rotors over cast aluminum rotors for heavy loads?
Copper bar rotors offer higher electrical conductivity, reducing rotor copper losses and heat generation. This design improves efficiency and structural reliability under continuous heavy starting currents and dynamic loads.
How does Vacuum Pressure Impregnation (VPI) protect frequency-controlled motors?
VFD operation produces transient voltage spikes that stress insulation. The VPI process fills air voids with resin, protecting the stator winding from moisture, vibration, and corona discharge.
Can Wolong motors replace legacy US NEMA frames without structural redesign?
Yes. The Wolong NEXP and GE-integrated series conform to both IEC and NEMA mounting dimensions and electrical standards, allowing drop-in replacements for existing infrastructure.
What logistics support does Shaanxi Nanfang Motor offer for project distribution?
We manage packing, custom documentation, export compliance, and sea freight logistics, shipping directly from our Factory 4.0 bases to ensure transparent delivery schedules.

Secondary Deep-Industrial Motor Systems

Heavy-duty, high-voltage, and variable speed drivetrains designed for specific process automation demands.

WOLONG YBBPX Variable Frequency Motor
OEM WOLONG Nanyang ATB brand YBBPX High Voltage Explosion-Proof Variable Frequency Three-Phase Motor Suppliers, Factories
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WOLONG YZYKS High Voltage Motor
China WOLONG Nanyang ATB brand YZYKS series high voltage positive pressure shell type three-phase asynchronous motor Supplier, Exporters
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WOLONG NEXP Series NEMA Motor
CE Certification Wolong Nanyang brand NEXP series low voltage AC explosion-proof three-phase NEMA standard motor Factory, Exporter
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WOLONG YBSD Series Conveyor Motor
High-Quality WOLONG NanyangATB brand YBSD series flameproof AC 3 Phase Motors for convey Manufacturers, Company
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WOLONG TAW Series Synchronous Motor
CE Certification WOLONG Nanyang ATB brand TAW series (new generation) increased safety brushless excitation three-phase synchronous motor Factory, Exporter
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WOLONG YR YRKS YRKK Slip Ring Motor
China Wolong Nanyang ATB brand YR、YRKS、YRKK Series three-phase High Voltage with Wound Rotor Induction motor (Frame size: 355—630 6kV) Company, Companies
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Wolong Schorch BPY-S30 Motor
China Wolong Nanyang Schorch brand BPY-S30 series variable frequency speed regulation Three-phase asynchronous motor Factory, Companies
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WOLONG YVF Series High Voltage Motor
OEM Wolong Nanyang ATB brand YVF series variable frequency high voltage three-phase induction AC motor Factory, Company
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