Highly ruggedized AC motors designed to operate reliably under extreme grid conditions, heavy dust load, and explosive atmospheres common in regional processing plants.
Analyzing the unique engineering parameters required for heavy industrial machinery in the Horn of Africa.
Much of Ethiopia's manufacturing base is located in high-altitude zones such as Addis Ababa (2,355 meters above sea level) and surrounding industrial parks. At altitudes exceeding 1,000 meters, lower air density diminishes the convection cooling efficiency of electric motors. Furthermore, the dielectric strength of the air decreases, making high-voltage windings (3kV, 6.3kV, 10.5kV) more susceptible to corona discharge and insulation breakdown. Our tailored electric motors feature advanced Class H insulation, custom-engineered temperature margins, and anti-corona protection to guarantee reliable performance at elevated heights.
Ethiopia's power sector is rapidly expanding, anchored by the Grand Ethiopian Renaissance Dam (GERD). However, regional distribution lines (33kV and 15kV) can still experience voltage drops and frequency variations in heavy industrial zones. Our high-voltage motors are designed with extra-wide tolerance envelopes to prevent overheating during grid fluctuations. For applications requiring variable speeds, such as cement fans or high-pressure pumps, our integrated VFD (Variable Frequency Drive) solutions ensure grid compliance and protect the motor from transient voltage spikes.
Shaanxi Nanfang Motor Technology Co., Ltd is the authorized global distributor of Wolong Electric Drive Group Co., Ltd. Founded in 1984 and listed on the Shanghai Stock Exchange in 2002 (code SH600580), Wolong has grown to become a global leader in motor and drive control systems. With 3 corporate R&D centers, 39 manufacturing factories, and 3 manufacturing bases worldwide, Wolong delivers cutting-edge technology and engineering expertise to key markets across the globe.
As the international gateway for Wolong’s high-voltage division, Shaanxi Nanfang Motor supplies explosion-proof and high-voltage powertrains to global petrochemical projects, cement facilities, and mining operators, with specialized distribution and support structures tailored to the growing industrial markets of East Africa, particularly Ethiopia.
Through systematic international acquisitions, Wolong has integrated some of the world's most prestigious electric motor brands into its portfolio:
Targeted industrial powertrains optimized for the specific operational challenges of East Africa's leading processing sectors.
With major operations like Mugher Cement, Derba MIDROC, and National Cement SC driving construction in Ethiopia, we offer high-voltage motors tailored for heavy-dust environments. Our YFBKK dust-proof and YBXKK flameproof motors feature specialized labyrinth seals and IP55/IP56 enclosures to prevent fine clinker dust from compromising motor windings and bearings.
Ethiopian state projects (Finchaa, Wonji Shoa, and Metahara) involve volatile gas environments during organic juice distillation and ethanol recovery. Our explosion-proof synchronous motors (TZYW and TAW increased safety series) prevent ignition in Zone 1 and Zone 2 gas hazardous areas, ensuring uninterrupted plant operations.
From gold extraction at Lega Dembi to regional rail tunneling and water diversion channels, our high-voltage motors deliver exceptional torque. Our YBU/YBUS tunnel boring flameproof motors are built to withstand heavy physical impacts, high moisture levels, and explosive coal dust or methane gas mixtures.
Explore the high-precision internal components and manufacturing systems that define our industry-leading reliability.
Our rotors feature advanced squirrel cage configurations. For standard frames, we utilize cast aluminum rotors manufactured through state-of-the-art centrifugal casting or high-pressure die-casting. This creates a monolithic assembly of rotor bars and end rings, delivering outstanding starting torque. For larger, megawatt-class motors, copper bar rotors are used. These feature induction-welded end rings and protective retaining rings to prevent radial deformation during high-speed rotation, ensuring long-term mechanical stability.
The stator coils are insulated with high-grade polyester film reinforced with glass cloth and high-purity mica tape. The fully wound stator undergoes a specialized Vacuum Pressure Impregnation (VPI) cycle. This eliminates microscopic air pockets within the slots, resulting in a solid insulation structure. This provides exceptional resistance to moisture, chemicals, thermal aging, and high dielectric stress—crucial for high-voltage operations at high altitudes.
Our motor frames are optimized using advanced multi-physics simulation platforms. Cast from high-grade, vibration-damping gray iron or fabricated from heavy structural steel, the frames are designed with ample safety margins. Optimized cooling fins and large surface-area profiles ensure efficient heat dissipation. This allows the motor to run cool, extending winding insulation life even in high-ambient, high-altitude locations.
The low-noise cooling assembly consists of a aerodynamic fan shroud, internal air guide cylinders, protective screens, and acoustical baffles. This lightweight design helps minimize motor noise. Featuring lateral air intakes, the system prevents airflow blockages and reduces energy losses during air redirection. It is rated to IP22/IP55 equivalent external protection, preventing foreign particle ingress while keeping acoustic emissions within strict regulatory limits.
Over 30 years of technological advancements, integration, and acquisition of world-class electric motor manufacturers.
Wolong acquired a 97.94% stake in ATB Group, one of Europe's top three motor manufacturers. This acquisition integrated ATB's explosion-proof engineering, including the Morley brand for mining and Laurence Scott's low-starting-current naval systems.
Founded in 1882, Schorch joined Wolong in 2011. This brought world-renowned German engineering for heavy-duty electric machines, serving petrochemical, power, and water-treatment projects globally.
Nanyang Explosion-Proof (CNE), China's premier manufacturer of high-voltage explosion-proof motors, officially joined the Wolong Group, establishing a unified base for flameproof industrial powertrains.
GE's commercial and industrial motor division joined Wolong, combining GE's historical heavy-industry manufacturing standards with Wolong's global production capacity.
Adding Brook Crompton's UK motor engineering heritage expanded Wolong's line of high-efficiency low-voltage and medium-voltage AC motors for extreme industrial operating conditions.
Wolong's partnership with OLI Vibration Motors has secured a global market share in vibrating drives and high-reliability Ex-proof sensor technology since 1999.
Our high-voltage explosion-proof motors are designed, manufactured, and tested to meet international standards, facilitating smooth project execution and regulatory compliance in Ethiopia.
Nemko / ATEX
CSA Standard
CE Certification
TESTSAFE Standard
For operations in hazardous areas containing explosive gases or vapors (such as petro-chemical depots or sugar mills with bio-ethanol units), our motors are certified to IECEx and ATEX standards. They feature robust enclosures (Ex d, Ex de) or pressurized containment (Ex p) to ensure high-voltage sparks cannot ignite the ambient air.
To meet the needs of international engineering contractors operating in Ethiopia, we offer custom motors manufactured to NEMA standards. Testing includes rigorous efficiency tests, winding resistance, starting torque curves, and sound pressure level verification to ensure compliance with global tender requirements.
High-specification motor solutions designed to drive large-scale public utilities and industrial projects throughout the region.
Optimizing transport corridors to provide reliable delivery and commissioning timelines for Ethiopian project sites.
Wolong’s production facilities operate under strict Industry 4.0 principles, employing robotic coil winding, computerized VPI systems, and fully automated testing stations. This integration helps maintain stable manufacturing timelines, even for complex, custom high-voltage motor builds. We ensure raw materials and components are sourced through reliable pathways, avoiding global logistics bottlenecks to keep your project schedules on track.
All motors undergo rigorous factory acceptance testing (FAT), including full-load simulation, temperature rise tests, and vibration analysis before leaving the factory. Test certificates are fully documented and provided for easy engineering validation.
We offer reliable logistics support for transport to inland Ethiopian sites:
Browse our full range of certified high-voltage asynchronous and synchronous motors, optimized for various industrial operating zones.
Get professional technical answers regarding the installation, selection, and shipping of high-voltage explosion-proof motors for East African industrial sites.
At altitudes above 1,000 meters, lower air density reduces convection cooling efficiency. Therefore, standard motors require derating to prevent overheating. Our engineering team sizes high-voltage motors for Ethiopia's high-altitude zones using Class H insulation limits or by oversizing the frame to ensure reliable, long-term operation under rated load.
For abrasive dust environments, such as clinker conveyor belts or mills, we provide specialized dust-proof motor designs (such as the YFBKK series) with IP55 or IP56 enclosures. These motors feature specialized non-contact labyrinth seals to prevent dust from entering the bearing housings, preserving lubrication quality and extending service intervals.
In bio-ethanol recovery and sugar refining zones, ATEX Zone 1/2 certifications (flameproof Ex d or increased safety Ex e) are typically required. Our ATB-brand motors comply with all major international directives, helping you select the appropriate protection class for volatile gas hazards.
Yes. Our high-voltage windings feature premium insulated coils processed via Vacuum Pressure Impregnation (VPI), providing excellent thermal and dielectric endurance. Combined with a VFD system, they provide stable starting profiles that protect the motor from typical voltage drops on local industrial grids.
Depending on whether the motor is a standard model or custom-engineered, manufacturing timelines range from 6 to 12 weeks. Ocean transit from China to the Port of Djibouti takes approximately 20 to 25 days, followed by rail transport to Modjo Dry Port, typically taking 3 to 7 days.
Contact our engineering specialists for custom technical designs, site-specific altitude ratings, and complete pricing for high-voltage and explosion-proof motors tailored for your projects in Ethiopia.
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