Fabricated Steel High Torque Wound Rotor Induction Motor

Fabricated Steel High Torque Wound Rotor Induction Motor 

When your operations demand uncompromising mechanical strength and exceptional torque performance, our Fabricated Steel High Torque Wound Rotor Induction Motor delivers proven reliability. Manufactured by Tellhow Shenyang Electric Machine Co., Ltd., this industrial powerhouse features heavy-duty fabricated steel housing engineered for maximum structural integrity under extreme load conditions.

With output capacities ranging from 200 kW to 30,000 kW and shaft heights from 355 mm to 1250 mm, these motors provide up to 250% of rated torque during startup operations. Our advanced slip ring assembly design ensures easy maintenance access while maintaining operational continuity. The enhanced heat dissipation system enables continuous duty cycles even in demanding environments, while corrosion-resistant surface treatments protect your investment in harsh industrial settings.

Built on over a decade of manufacturing excellence and backed by a total production capacity of 8 million kW, you're choosing a motor solution that combines German engineering precision with cost-effective Chinese manufacturing efficiency.

Key Technical Features That Set Us Apart

Superior Construction Quality

Our fabricated steel construction method creates a motor frame that withstands severe vibrations and mechanical stresses that would compromise cast iron alternatives. The welded steel housing provides exceptional rigidity while maintaining optimal dimensional accuracy.

You'll notice the difference in alignment stability. This translates directly to reduced maintenance intervals and longer bearing life in your facility.

High Starting Torque Capability

The wound rotor design with external resistance control allows you to achieve high starting torque—up to 250% of rated torque—while drawing significantly lower starting current compared to squirrel cage alternatives. This protects your electrical infrastructure from damaging current surges.

Your facility's electrical system remains stable during motor startup. You avoid voltage dips that affect other equipment on the same power supply network.

Advanced Thermal Management

We've engineered enhanced ventilation channels throughout the motor housing. The optimized airflow pattern combined with strategically positioned cooling fins ensures efficient heat dissipation during continuous operation.

This thermal performance means you can maintain rated output even during extended duty cycles. Your production schedules remain uninterrupted regardless of ambient temperature variations.

Technical Specifications

Industry Applications and Use Cases

Heavy Rolling Mills

Your steel production demands motors that withstand continuous high-torque loads and frequent reversing operations. The Fabricated Steel High Torque Wound Rotor Induction Motor maintains consistent performance throughout rolling cycles while handling the mechanical shock loads inherent in metal forming processes.

The external rotor resistance control allows precise speed regulation during different rolling passes. You achieve better product quality through controlled deceleration and acceleration profiles.

Crushing and Grinding Equipment

Ball mills, cone crushers, and SAG mills create some of the most demanding motor applications in mining and mineral processing. Our wound rotor design handles the high breakaway torque required to overcome material jamming and restart under load conditions.

You'll experience fewer unplanned shutdowns. The motor's ability to develop high torque at low speeds protects your mechanical drive components from excessive stress.

Industrial Mixers and Agitators

Chemical processing, cement production, and pulp and paper applications require reliable mixing equipment. These motors provide the smooth torque characteristics necessary for consistent material blending while accommodating viscosity variations during batch processes.

Your process engineers gain flexibility through variable speed control. Product quality improves when mixing speed can be optimized for different material formulations.

Pumps and Compressors

Large-scale pumping stations and compression systems benefit from the soft-start capability that reduces mechanical stress on impellers, pistons, and valve assemblies. The gradual torque buildup extends equipment lifespan throughout your fluid handling system.

You reduce maintenance costs on coupled equipment. Seals, bearings, and shaft couplings last longer when protected from startup shock loads.

Performance Advantages in Your Operations

Energy Efficiency Through Load Optimization

The wound rotor configuration enables you to match motor speed precisely to your process requirements. By operating at optimal speed rather than running continuously at full synchronous speed with throttled output, you reduce energy consumption by 15-20% compared to fixed-speed alternatives.

Your electrical bills decrease while carbon footprint goals become more achievable. This efficiency improvement typically delivers ROI within 18-24 months in continuous process applications.

Reduced Electrical Infrastructure Stress

High starting currents—often 6-8 times rated current in direct-on-line Squirrel Cage Motors—create voltage dips affecting your entire facility. Our wound rotor design with external resistance starting limits inrush current to 2-3 times rated values.

You protect sensitive electronic equipment from voltage fluctuations. Other production lines maintain stable operation during motor starts.

Maintenance Accessibility

We've designed the slip ring assembly with practical maintenance requirements in mind. The brush holders and collector rings are positioned for easy inspection without major disassembly. You can perform routine carbon brush replacement during scheduled maintenance windows.

Your maintenance team spends less time on Motor service. The fabricated steel construction allows access panels to be positioned optimally for component inspection.

Frequently Asked Questions

Q: How does a wound rotor motor differ from a squirrel cage motor?

A: The wound rotor design uses wire-wound coils on the rotor connected to external circuits through slip rings, rather than cast aluminum bars. This configuration gives you controllable starting characteristics and variable speed capability that squirrel cage designs cannot provide. You gain operational flexibility but accept slightly higher maintenance requirements for the brush and slip ring assembly.

Q: What maintenance schedule should I follow for the slip ring assembly?

A: We recommend visual inspection of carbon brushes every 2,000-3,000 operating hours, with replacement when brush length reaches the minimum specified dimension. Slip ring surfaces should be cleaned and inspected quarterly in normal environments, or more frequently in dusty or contaminated atmospheres. Your maintenance team can perform these tasks without specialized equipment or motor removal.

Q: Can these motors operate in hazardous or explosive atmospheres?

A: Standard open-type configurations are not suitable for hazardous locations due to the arcing at brush-slip ring interfaces. However, we offer explosion-proof enclosed designs with modified ventilation and certified enclosures for Zone 1 and Zone 2 classified areas. Contact our engineering team to discuss your specific environmental requirements and applicable certifications.

Q: What is the typical lead time for custom voltage or mounting configurations?

A: Standard catalog specifications with common voltage ratings ship within 8-12 weeks. Custom configurations requiring modified windings, special mounting arrangements, or non-standard enclosures typically require 12-16 weeks from order confirmation. We maintain component inventory for our most popular frame sizes to minimize delivery delays.

Q: How do I size the external starting resistors for my application?

A: Resistor sizing depends on your load torque characteristics, required starting time, and allowable current levels. Our engineering team provides complete starting resistor specifications as part of the motor selection process. We can also supply complete starting panels with pre-engineered resistor banks and control circuits matched to your specific motor and load requirements.

Q: What certifications do your motors carry for international markets?

A: Our product product line holds CE marking for European markets, UL certification for North America, and various regional certifications including SASO, CCC, and others. All motors comply with IEC 60034 international standards. We can provide certification documentation specific to your target market during the quotation process.

Contact Us for Custom Solutions

Our engineering team is prepared to discuss your specific requirements for Fabricated Steel High Torque Wound Rotor Induction Motor.

Email us at sxmotor@yeah.net