AC High Voltage Motor Supplier & Company serving Finland

High-Performance Industrial Drive Systems Engineered for Extreme Nordic Conditions and Maximum Efficiency

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Nordic Commercial Realities

Finland's Heavy Industry Landscape & Electrification Transition

Finland hosts one of the most technologically advanced and environmentally regulated industrial sectors in the world. As the nation targets complete carbon neutrality, heavy manufacturing enterprises in Finland are undergoing a rapid technological migration from fossil-fueled thermal systems to highly efficient electric powertrains. High voltage AC motors serve as the workhorses of this energy transition.

Key industrial hubs extending from the forestry and pulp and paper mills in Lappeenranta and Jämsä, to the marine shipyards in Turku and Rauma, and the underground metal mines in Kittilä and Pyhäsalmi demand reliable and efficient electrical machinery. These plants operate continuously under harsh sub-zero winter temperatures down to -40°C. In such demanding environments, motor failure is not just an operational delay—it can result in catastrophic pipe freezing, plant outages, and massive financial loss.

Industrial operators in the Nordic region require partners that offer both premium equipment and technical knowledge. Shaanxi Nanfang Motor Technology Co., Ltd, representing the global scale of the Wolong Group, provides heavy industry in Finland with advanced motor engineering that meets strict European EN standards, ATEX regulations, and IEC efficiency requirements.

The Nordic Standard for HV Powertrains:

  • Thermal Reliability: Integration of internal anti-condensation heating elements and PT100 temperature sensors on both stator windings and bearing housings.
  • Grid Stability Support: Custom stator slot design and high-quality silicon steel sheets configured to operate efficiently with low starting currents, avoiding local grid fluctuations.
  • Hazardous Protection: Complete range of flameproof (Ex d / Ex db) and non-sparking (Ex ec) motors certified for explosive dust and gas atmospheres in chemical and milling complexes.
Authorized Global Powerhouse

About Shaanxi Nanfang Motor Technology

Shaanxi Nanfang Motor Technology Co., Ltd is the authorized global partner and distributor of Wolong Electric Drive Group Co., Ltd. Founded in 1984, Wolong has evolved into a global leader in motor manufacture and drive control systems through decades of focused technological innovation and strategic acquisitions of heritage European brands.

39
Global Factories
58+
Countries Served
32+
Key R&D Patents
200+
Large Scale Projects

Integration of European Engineering Heritage

Through strategic expansion, the Wolong Group has integrated several renowned global motor manufacturers. This consolidation has brought together high-specification engineering companies, enabling Nanfang Motor to offer motors with European design heritage:

ATB Group & Morley

Acquired in 2011. Includes ATB's robust high voltage portfolio and Morley's 130 years of experience in heavy-duty mining machinery.

Schorch & Laurence Scott

Schorch (est. 1882) defines standards in petrochemical drive systems, while Laurence Scott provides specialized low starting current motors.

GE Industrial Motors & Brook Crompton

Incorporating General Electric's industrial motor business and Brook Crompton's expertise in highly efficient design configurations.

Technical White Paper

Anatomy of Wolong High Voltage AC Motors

Wolong high-voltage motors are built with an emphasis on thermodynamic balance and structural stability. Their robust design reduces vibration, extends mechanical lifetime, and maintains low core losses under variable load profiles.

  • VPI Stator Insulation System

    Features high-mica tapes impregnated under vacuum pressure (Vacuum Pressure Impregnation) with Class F or H solventless resin, providing moisture resistance, high dielectric strength, and reliable thermal dissipation.

  • Balanced Rotor Configurations

    Constructed with die-cast aluminum or welded copper bars using mid-bar constraint structures to eliminate mechanical fatigue during frequent start-up cycles.

  • High-Strength Cast Iron Frame

    Designed using multi-physics structural and fluid dynamic simulations to optimize cooling fin spacing, maximize heat dissipation, and prevent frame resonance.

  • Low-Noise Aerodynamic Fan System

    Optimized internal fan paths, sound-absorbing materials, and IP22/IP55 shrouds keep noise levels well below OSHA and European standard limits.

Rotor Construction Details

Rotors feature a squirrel-cage design using centrifugal aluminum casting or high-grade copper bars. Structural integrity and balanced slot geometries ensure high starting torque and thermal stability, even during voltage fluctuations in remote industrial grids.

Cooling Methods & Enclosures

Available configurations include TEFC (IC411), Air-to-Air cooled (IC611), and Water-to-Air cooled (IC81W) systems, providing optimal cooling for chemical processing, wood processing, and high-vibration mining applications.

Complete Series Catalog

Heavy Industrial High & Low Voltage Motors

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Economic & Operational Efficiency

Leveraging Global Supply Chains & Chinese Production Efficiency

The Global Paradigm Shift in Sourcing HV Motors

Historically, procurement managers in Northern Europe sourced heavy electric drives from local suppliers. Today, rising domestic manufacturing costs and energy crises have shifted the industry toward global supply networks. This transition is enabled by strict standardization (IEC and NEMA) and the integration of European engineering brands under global manufacturing groups.

Shaanxi Nanfang Motor combines Wolong's established international brand heritage with the cost-efficiency of Chinese manufacturing. By centralizing core component production and using automated coil winding systems, CNC rotor balancing equipment, and multi-megawatt testing bays, our facilities deliver high performance at competitive prices.

Why Procurement Teams in Finland Choose Our Supply Network

  • Standardized Quality Control: Testing protocols align with IEC 60034, guaranteeing rating compliance before shipping.
  • Optimized Lead Times: Direct shipments from China to Baltic ports like Helsinki or Kotka reduce distribution costs.
  • Comprehensive Engineering Support: Engineers provide alignment drawings, thermal characteristics, and electrical curves for site-specific integration.
Compliance & Safety Standards

Certified Security for Critical Infrastructure

Our motors carry certifications required by international safety, environmental, and maritime regulatory bodies, facilitating installation in hazardous and offshore locations.

Nemko ATEX Certification

Nemko / ATEX

CSA Certification

CSA

CE Mark

CE

CCC Certification

CCC

SABS Certification

SABS

TestSafe Certification

TestSafe

Engineering Integration

Localized Application Scenarios across Finland

Pulp Refiners & Debarking Drums

In pulp and paper mills, high voltage motors drive heavy refiners and grinding machinery. These systems require high thermal thresholds and constant-torque outputs. Wolong YKK and YKS motors deliver the required electrical margins, operating reliably in warm, humid environments.

Underground Ventilation & Slurry Pumping

Mines in Northern Finland operate under high dust, dampness, and vibration. The ATB Morley mining-heritage motors, YBS flameproof series, and YWKK non-sparking configurations provide dust-ignition protection (Ex ec/Ex tb) for ventilation fans and dewatering pumps.

Marine Propulsion & Thrusters

Finnish maritime technology requires robust auxiliary propulsion and thruster drives. Water-cooled YKS and variable frequency speed-regulated BPY-S30 motor lines withstand constant vibration and sea spray, maintaining efficiency under variable load profiles.

Technical FAQ

Frequently Asked Questions: High Voltage AC Motors

How do you configure motors for sub-zero temperatures (down to -40°C) in Northern Finland?
For sub-zero installations, we specify low-temperature structural steel frames, synthetic low-viscosity greases, and internal heating elements. Stator windings are equipped with anti-condensation space heaters that activate when the motor is idle, preventing moisture buildup and winding failure.
What is the advantage of using a Vacuum Pressure Impregnation (VPI) insulation system?
VPI removes air bubbles and voids from the stator windings, replacing them with a solid resin structure. This process increases electrical resistance, enhances thermal conductivity, and protects the windings from moisture and chemical exposure in industrial environments.
Are Wolong motors compatible with third-party Variable Frequency Drives (VFDs)?
Yes. Series such as the YVF and YBBPX are engineered for VFD operation. They feature insulated non-drive end bearings to prevent shaft currents and reinforced insulation to withstand high voltage spikes (dv/dt) from PWM inverter systems.
How do we select between IC411, IC611, and IC81W cooling configurations?
Selection depends on ambient conditions and plant infrastructure. IC411 (fan-cooled) is ideal for standard environments. IC611 (air-to-air exchanger) is suited for outdoor installations with high dust or moisture, while IC81W (water-cooled) is preferred for confined spaces where heat must be directed away from the room.
What certifications are supplied with the explosion-proof series?
Our explosion-proof motor series, including the YBS, YBBPX, and YBF, are certified under ATEX, IECEx, and CE standards, complying with European safety directives for hazardous gas and dust atmospheres (Zones 1, 2, 21, and 22).

Collaborate with Our High Voltage Engineering Specialists

Whether retrofitting a paper mill in Tampere or designing a propulsion package for a marine project in Turku, our technical team provides calculation documents, custom dimensions, and engineering support.

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