Select high-voltage, low-voltage, flameproof, and custom AC induction motor series engineered by Wolong Group and distributed via Shaanxi Nanfang Motor Technology Co., Ltd.
Shaanxi Nanfang Motor Technology Co., Ltd. is the official authorized distributor of Wolong Electric Drive Group Co., Ltd., providing global EPC contractors, mine operators, chemical plants, and heavy machinery OEMs direct access to Wolong’s industry-leading alternating current (AC) motor technologies.
Wolong Electric Drive Group Co., Ltd. was established in 1984 and listed on the Shanghai Stock Exchange in 2002 (Stock Code: SH600580). Through four decades of aggressive technology integration and strategic international mergers, Wolong has solidified its standing as a top-tier global enterprise specializing in electric motors, power control systems, and complete electro-mechanical drive solutions.
Through strategic capital acquisitions, Wolong has unified world-renowned century-old motor brands under a single manufacturing and technological architecture:
Detailed technical analysis of high-voltage and low-voltage alternating current (AC) motor components engineered for zero-downtime industrial applications.
Stator coils are wrapped with high-content mica tape reinforced with glass cloth and polyester film. Utilizing Vacuum Pressure Impregnation (VPI) with solventless epoxy resin, the winding achieves Class H/F thermal endurance, superior mechanical rigidity, and absolute moisture/chemical resistance.
Rotor structures feature cast aluminum squirrel-cage geometry via centrifugal or high-pressure die-casting for standard frames. High-capacity or heavy-torque AC motors employ copper-bar rotors with silver-brazed end rings and retaining ring support for high-speed dynamic balancing.
Motor housings are cast from high-grade grey cast iron (HT250/HT300) or fabricated steel plate. Digital multi-physics simulations ensure maximum structural redundancy, optimized external cooling fin thermodynamics, and structural vibration dampening.
Featuring side-mounted air inlets, aerodynamic silencer baffles, and internal acoustic absorption lining. Rated IP22/IP55, the fan system minimizes wind-shear acoustic loss while protecting internal fan blades from mechanical impact.
| Motor Series | Voltage Rating | Frame Range | Efficiency Grade | Explosion Protection | Primary Industrial Target |
|---|---|---|---|---|---|
| YBX4 Series | 380V / 660V / 1140V (LV) | 80 — 355 | IE4 Super High Efficiency | Ex d IIC T4 Gb | Petrochemicals, Refineries, Hazardous Gas |
| WE4 / Brook WE | 220V — 690V (LV) | 80 — 355 | IE4 / IE5 Ultra Premium | Safe Area / Non-Sparking | Industrial Pumps, HVAC, General Automation |
| YRKK / YRKS | 6kV / 10kV / 11kV (HV) | 355 — 630 | High Efficiency HV | Safe Area / Slip Ring | Heavy Ball Mills, Crushers, Cement Fans |
| YBSS / YBC | 660V / 1140V / 3300V | Specialized Duty | Custom Heavy Duty | Ex d I Mb (Mining) | Underground Coal Shearers & Armored Conveyors |
| YWKK / YWKS | 6kV / 10kV (HV) | 315 — 630 | High Efficiency HV | Ex ec IIC T3 Gc (Non-Sparking) | Gas Compressors, Zone 2 Chemical Plants |
| TZYW Series | 6kV / 10kV (HV) | Large Synchronous | Synchronous High PF | Ex pz / Ex px (Pressurized) | Large Fertilizer Pumps, Hydrogen Compressors |
The global industrial motor market demands an optimal equilibrium between technical compliance, operational longevity, and capital expenditure efficiency. Wolong’s core manufacturing bases in Nanyang, Shangyu, and Wuhu deliver distinct supply chain advantages:
In-house production of silicon steel laminations, enamelled copper wire, precision castings, and VPI resin guarantees full material traceability and eliminates external lead-time bottlenecks.
Every AC motor undergoes full-load thermal rise testing, partial discharge analysis, dynamic vibration spectrum evaluation, and hydrostatic flameproof shell pressure testing prior to shipment.
Integrating Schorch, ATB, and Brook Crompton design blueprints into Chinese digital megafactories yields European-grade mechanical accuracy at competitive Asian production costs.
Wolong AC motors hold comprehensive global standard approvals, facilitating direct installation across all continents:
Wolong AC motor systems are deployed globally to drive critical machinery across hazardous and severe environments.
Utilizing YBC coal shearer motors, YBSS conveyor drives, and YBU/YBUS/YBUD tunnel boring machine (TBM) motors. Engineered to endure extreme mechanical shock, high humidity, and explosive coal dust atmospheres under Ex d I Mb ratings.
Equipped with YBX4 super-efficient flameproof motors and YWKK high-voltage non-sparking motors for continuous drive of centrifugal pumps, gas compressors, pipeline boosters, and crude oil transfer systems in Zone 1 and Zone 2 areas.
Deploying Distributed Synchronous Condenser Systems and TZYW Brushless Excitation Synchronous Motors to deliver instantaneous dynamic reactive power compensation (VAR) and maintain voltage stability across renewable energy power grids.
Expert answers on Wolong AC motor selection, technical specifications, and international distribution.
Shaanxi Nanfang Motor Technology Co., Ltd. is an officially authorized direct distributor for Wolong Electric Drive Group Co., Ltd. We provide factory-direct sales, global logistics management, OEM modification, and technical field support for Wolong, Nanyang Explosion-Proof, ATB, Schorch, and Brook Crompton motor lines.
Yes. Series such as the YVF and YRKK/YRKS are specifically engineered for VFD operation. They incorporate reinforced turn-to-turn insulation, corona-resistant magnet wire, Class H VPI resin, and insulated non-drive-end bearings (or shaft grounding rings) to completely eliminate bearing currents induced by VFD pulse-width modulation (PWM) harmonics.
Ex d (Flameproof) motors (e.g., YBX4, YBSS) are designed for Zone 1 or underground mines where explosive gases may be present during normal operation. The housing is engineered to contain an internal explosion without igniting external gases. Ex ec (Non-Sparking) motors (e.g., YWKK) are suitable for Zone 2 environments where explosive gas atmospheres are unlikely to occur and exist only for short periods. Ex ec provides cost-effective safety by eliminating arcs, sparks, or dangerous surface temperatures.
Wolong low-voltage induction motors meet and exceed international energy standards set by IEC 60034-30-1. The WE4 and YBX4 series fully satisfy IE4 (Super High Efficiency) and IE5 (Ultra Premium Efficiency) specifications, reducing plant lifecycle power consumption by up to 15% compared to legacy IE2/IE3 motors.
Explore additional certified motor solutions engineered for underground mining, fire ventilation, grid VAR support, and custom industrial duties.
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