High-performance three-phase induction and synchronous AC motors tailored for major thermal power plants, steel mills, and oil refineries in India.
India is undergoing an unprecedented phase of capital investment and industrialization. Guided by national programs like "Make in India" and the National Infrastructure Pipeline (NIP), heavy manufacturing industries are rapidly increasing capacity. Central to this growth is the demand for robust, reliable, and energy-efficient medium and high voltage (MV/HV) AC motors. These machines operate under harsh environments—from the extreme seasonal temperatures of Northern India to the highly humid coastal zones of Gujarat, Maharashtra, and Tamil Nadu.
High voltage motors in the Indian market are heavily deployed in critical power applications. In thermal and hydroelectric power generation, they drive large forced draft (FD) and induced draft (ID) fans, high-pressure boiler feed pumps, and coal pulverizers. In chemical and petrochemical processing networks, including massive complexes like Jamnagar, explosion-proof HV motors ensure continuous process safety while operating volumetric compressors, mixers, and high-flow transfer pumps. The reliability of these motors dictates the uptime of multi-billion dollar industrial setups.
Grid conditions in developing industrial zones across India present distinct challenges. Frequent voltage fluctuations, harmonic distortions, and occasional transients necessitate motor designs featuring advanced insulation systems and high mechanical safety factors. Standard off-the-shelf motors often struggle with these thermal and electrical stresses. Consequently, engineering-centric enterprises must turn to manufacturers who understand how to configure windings, rotors, and enclosures to withstand the realities of the Indian grid.
Shaanxi Nanfang Motor Technology Co., Ltd., as an authorized global distributor of Wolong Electric Drive Group, bridges the gap between sophisticated international design and localized supply chain stability. Wolong's global footprint—spanning 39 factories, 3 global manufacturing bases, and 3 localized R&D hubs—allows us to supply India's expanding industrial nodes with highly customizable solutions.
Our supply chain model integrates Chinese production efficiency with European legacy engineering. Following the acquisition of world-class brands like ATB, Brook Crompton, Laurence Scott, and Schorch, Wolong has unified their respective technological patents under a simplified, high-volume production blueprint. This synergy means Indian project managers get German Schorch-level durability and ATB explosion-proof safety without the lengthy lead times typically associated with European manufacturing.
Our logistical pipeline is optimized to transport heavy equipment directly to major Indian ports such as Mumbai (JNPT), Chennai, and Mundra. Supported by technical consulting during design phases, Shaanxi Nanfang Motor ensures that complete motor packages, including matching Variable Frequency Drives (VFDs) and vibration monitoring instruments, arrive on-site, pre-configured and ready to run.
Optimized motor configurations engineered to resolve local operational challenges across core Indian economic sectors.
For refinery operations under Indian Oil Corporation (IOCL), Bharat Petroleum (BPCL), and private entities, flameproof and positive-pressure shell motors (such as the YZYKK and YZYKS series) are mandatory. These systems are certified by PESO (Petroleum and Explosives Safety Organisation) to prevent hydrocarbon ignition in explosive Zone 1 and Zone 2 environments.
In deep underground mines under Coal India Limited (CIL) and associated subsidiaries, dust accumulation and moisture pose severe challenges. Our heavy-duty wound rotor induction motors (YR, YRKS, and YRKK series) combined with rugged flameproof conveyor motors provide high starting torque, resisting dust ingestion and severe structural vibrations.
Large-scale lift irrigation networks, such as those in Telangana and Andhra Pradesh, demand massive vertical and horizontal induction motors operating continuous duty cycles. Utilizing water-to-water cooled YKS designs ensures the core runs at optimal temperatures even when ambient pump house temperatures surpass 45°C.
Driven by global commitments to carbon reduction, the energy consumption footprint of heavy industrial equipment has come under intense scrutiny. The Indian government's push for energy audit mandates under the Bureau of Energy Efficiency (BEE) is accelerating a shift from legacy IE1/IE2 efficiency class motors towards IE3, IE4, and eventually IE5 permanent magnet technology.
To align with these developments, Shaanxi Nanfang Motor and Wolong have deployed a structured technological roadmap targeting:
Analyzing the internal components that ensure our high-voltage motors withstand the harshest industrial stresses.
Our rotors utilize squirrel cage designs with centrifugal or die-cast aluminum configurations, integrating the rotor bars and end rings into a solid structure. For larger capacity systems, we use heavy-duty copper bar rotors built with precision welding and reliable securing mechanisms. A high-strength protective ring design ensures stability at elevated rotation speeds, maintaining mechanical balance and minimizing load vibrations.
The stator coil is wrapped with high-mica tape backed by polyester film and glass cloth. Following precision winding, the entire stator core undergoes Vacuum Pressure Impregnation (VPI). This creates a moisture-sealed, structurally rigid insulation shell with high thermal dissipation capabilities, making the motor resistant to high humidity and chemical vapors.
Engineered using digital fluid and structural simulation suites, our high-strength cast iron and steel frames feature massive structural margins. This frame structure absorbs heavy mechanical shocks, isolates resonant operational frequencies, and aids in maintaining a lower heat profile during continuous full-load runs.
Our IP22 fan cover system incorporates a structured air guide cylinder, protective mesh window, and sound-dampening plates. Placing the air intake on the side reduces intake restriction, dampens fan turbulence noise, and keeps the working area safe and comfortable for personnel.
Unifying renowned century-old global motor brands under Wolong's single structural standard.
In 2011, WOLONG acquired 97.94% of the Austrian ATB Group, entering the ranks of high-strength global motor manufacturing. The ATB motor family includes Morley (a 130-year legacy brand for underground mining machinery) and Laurence Scott (renowned for supplying low starting-current systems for British naval vessels and nuclear installations).
This was followed by the inclusion of Brook Crompton Motors, a global leader in designing highly efficient low, medium, and high-voltage AC electric motors. In the same year, Schorch joined the group, bringing over a century of reputation in petrochemical drive systems. OLI, a major supplier of vibration motors, also integrated into the system, alongside Nanyang Explosion-Proof Group (CNE) in 2015, which stands as China's largest specialized R&D base for safety-critical explosion-proof electric motors.
In 2018, the commercial and industrial division of General Electric (GE) merged its expertise with Wolong. This consolidated alliance secures Shaanxi Nanfang Motor's capability to deliver high-specification electric motors globally, providing reliable performance for steel production, chemical refining, paper manufacturing, water distribution, and maritime operations.
Our industrial motors conform to strict local safety policies and international standards, offering reliable operations in hazardous regions.
Nemko / ATEX
CSA
CE Standard
CC Quality
SABS Approved
To support global supply chains and cross-border trade, Shaanxi Nanfang Motor maintains compliance with essential engineering guidelines:
Explore specialized variable frequency, explosion-proof, and custom frame high-voltage motor variants.
Get authoritative answers on engineering standards, certifications, and operational characteristics of high-voltage electric motors.
The primary difference lies in the heat exchange design. The YKK series utilizes an air-to-air heat exchanger, where a secondary fan forces external ambient air through the cooling tubes. The YKS series employs an air-to-water heat exchanger, using circulated cool water to remove heat. YKS motors are more compact and ideal for high-ambient temperature applications, provided a clean water cooling supply is available on-site.
Explosion-proof motors (such as YBBP, YZYKK, and YBS) must obtain PESO certification before installation in hazardous zones within India. Wolong's explosion-proof motors are designed in strict compliance with IEC 60079 standards. The test certificates generated by authorized testing labs (like Karandikar Laboratories or international bodies) are submitted to PESO for local statutory approvals, assuring absolute compliance for Indian petrochemical sites.
VPI ensures that the stator insulation is free of voids, bubbles, and moisture entry pathways. In humid areas (like Chennai, Mumbai, and Kolkata), moisture can quickly degrade standard motor insulation, leading to phase-to-ground faults. The VPI process coats the windings with a dense polymer film, preventing moisture penetration and improving heat dissipation to extend the motor's operating life.
Yes. Utilizing engineering assets from Schorch, ATB, and Brook Crompton, we can build custom shafts, frame dimensions, and terminal box locations. This allows direct replacements for older motors, minimizing mechanical modifications to existing pump bases or steel foundations during plant upgrades.
NANFANG
