Variable frequency squirrel cage motor
- Product Description
Variable Frequency Squirrel Cage Motor - High-Performance Industrial Solution
Our YPKK high-voltage VFD motors deliver exceptional performance with output power ranging from 160kW to 16000kW and speeds optimized for variable frequency drives. With a production capacity of 8 million kW and over 2,100 specifications across 49 series, we've engineered these Variable frequency squirrel cage motor with welded steel frames and precision bearings to achieve 15-20% energy savings. Our advanced magnetic circuit structures and high-precision manufacturing ensure reliable operation across voltage ranges from 400V to 13800V, meeting CE, UL, VDE, and multiple international certifications for your demanding industrial applications.
Why Choose Our Variable Frequency Squirrel Cage Motor?
Superior Engineering for VFD Applications
Your operations demand motors specifically designed for variable speed drives. Unlike standard motors, our units feature reinforced insulation systems that withstand VFD voltage spikes and prevent premature failure.
The intelligent cooling design keeps your equipment running smoothly. Our IC416 cooling method uses an independent electric fan that maintains optimal temperatures even at low speeds—solving the common overheating problem you face with integrated fan systems.
Built for Industrial Environments
We understand your challenges with dusty, damp, and severe conditions. That's why we've engineered these motors with:
- Welded steel frames for structural integrity
- Precision bearings with insulated NDE options
- Advanced heat dissipation capability
- Protection ratings from IP23 to IP56
- Low vibration design for consistent performance
Your facility benefits from reduced maintenance downtime and extended equipment life.
Wide Application Range
These motors seamlessly integrate into your existing systems, whether you're running:
- Pumps and fans with variable flow requirements
- Belt conveyors needing precise speed control
- Compressors in petrochemical plants
- Ball mills in mining operations
- Crushers in construction materials
- Steel mill equipment
Both vertical and horizontal mounting options give you installation flexibility.

Technical Specifications
| Parameter | Specification |
|---|---|
| Design Standard | IEC60034, NEMA, BS, GOST |
| Frame Size | 315, 355, 400, 450, 500, 560, 630, 710, 800, 900, 1120 mm |
| Output Power | 160kW – 16000kW (200HP – 21000HP) |
| Voltage Range | 400/690V, 3000V, 3300V, 4160V, 6000V, 6600V, 10000V, 11000V, 13800V |
| Frequency | 3-50Hz, 60Hz, 50-100Hz |
| Protection Class | IP23, IP24, IP54, IP55, IP56 |
| Cooling Method | IC06, IC416, IC516, IC616, IC666, IC81W |
| Mounting Type | IMB3, IMB35, IMV1, IM7311 |
| Efficiency Class | IE2, IE3, IE4 |
| Insulation Class | F or H |
| Temperature Rise | B or F |
| Certifications | CCC, CE, ROHS, UL, VDE, EAC, ISO9001-2015 |
| Color | Blue or customized |
Available Accessories
Enhance your motor's performance and monitoring capabilities:
- PT100 temperature sensors
- PTC thermistors
- PTO protection devices
- Space heaters for cold environments
- SPM vibration sensors for predictive maintenance
Key Performance Advantages
Energy Efficiency That Impacts Your Bottom Line
You'll see immediate operational cost reductions. Our high-efficiency control algorithms deliver 15-20% energy savings compared to conventional motors. This translates to significant annual savings on your electricity bills.
The optimized magnetic circuit structures maintain high efficiency across a wide load range. Your facility benefits whether running at full capacity or during light-load conditions.
Intelligent Adaptive Load Regulation
Our Variable frequency squirrel cage motor automatically adjust to your changing process requirements. The intelligent control system responds quickly to load variations, providing:
- Fast torque response for demanding applications
- Multi-dimensional condition monitoring
- Wide voltage and frequency adaptability
- Stable operation during power fluctuations
You get consistent performance without constant manual adjustments.
Reliable Operation in Harsh Conditions
We've tested these motors extensively in challenging environments. The compact structural design minimizes exposure to contaminants while the advanced sealing systems protect internal components.
Low noise operation improves your workplace environment. Your team appreciates the reduced sound levels during extended shifts.
Customization Capabilities
Tailored to Your Specific Needs
Every industrial application has unique requirements. Our ODM/OEM services provide flexible solutions:
Power and Speed Configuration: We match motor specifications to your exact process demands.
Insulation Optimization: Choose the insulation class that suits your operating environment and temperature requirements.
Structural Modifications: Custom mounting arrangements, shaft extensions, and connection options integrate seamlessly with your existing equipment.
Appearance Customization: Brand alignment through color schemes and labeling.
Whether you need a single prototype or large-scale production, our 190,000 square meter manufacturing facility accommodates both small-batch and high-volume orders.
Global Support Network
We're Here When You Need Us
Your operations can't afford extended downtime. Our comprehensive support system ensures:
- Localized technical assistance across major markets
- Professional engineering consultation for system optimization
- Stable spare parts supply chain with strategic inventory
- Lifecycle maintenance services to maximize equipment longevity
Our team responds quickly to your technical inquiries and provides practical solutions based on decades of motor manufacturing experience.
Industries We Serve
Our Variable frequency squirrel cage motor power critical operations across diverse sectors:
Power Generation: Reliable performance in auxiliary systems and cooling applications
Metallurgy: Robust construction for demanding steel mill environments
Mining: Proven durability in abrasive, high-load conditions
Construction Materials: Consistent operation in cement and aggregate production
Petrochemicals: Compliance with strict safety and reliability standards
Water Conservancy: Efficient pump drives for water treatment and distribution
Environmental Protection: Energy-efficient solutions for air handling and waste processing

The Tellhow Advantage
Innovation Meets Manufacturing Excellence
Established in 2011 with 500 million RMB registered capital, Tellhow Shenyang Electric Machine combines modern manufacturing capabilities with proven engineering expertise.
Our 190,000 square meter facility specializes in medium and large electric motors with shaft heights from 355mm to 1250mm. This focused approach means you benefit from deep technical knowledge and refined manufacturing processes.
Commitment to Quality and Sustainability
We follow the philosophy of "National Tellhow, International Tellhow"—delivering world-class products while advancing sustainable development goals. Every motor undergoes rigorous testing to ensure it meets our high standards and your performance expectations.
Our investment in intelligent manufacturing technologies ensures consistent quality across all production volumes. You receive the same precision engineering whether ordering one motor or one hundred.

Frequently Asked Questions
Q: Why can't I use a standard squirrel cage motor with a VFD?
A:Standard motors lack the reinforced insulation to handle VFD voltage spikes. They may overheat at low speeds because the integrated fan's airflow decreases with motor speed. Our product solves both issues with enhanced insulation systems and independent cooling.
Q: What is the significance of the IC416 cooling method?
A:IC416 uses an independent electric fan that operates separately from the motor shaft. This ensures constant cooling even when your motor runs at very low RPMs—critical for maintaining safe operating temperatures during variable speed operation.
Q: How do I prevent bearing failure from shaft currents?
A:We recommend installing insulated NDE (Non-Drive End) bearings and shaft grounding rings. These components divert capacitive currents that develop during VFD operation, protecting your bearings from electrical discharge machining (EDM) damage.
Q: What is the maximum distance allowed between the motor and the VFD?
A:Distances over 50 meters typically require dv/dt filters or sine-wave filters. These prevent reflected wave overvoltage that can damage motor insulation. We'll help you specify the right filtering solution based on your installation requirements.
Q: Does the product improve power factor?
A:While the motor's inherent power factor varies with load, the VFD interface maintains a high displacement power factor—typically above 0.95—from your main power grid's perspective. This reduces reactive power charges on your utility bill.
Q: Can these motors operate in explosive environments?
A:Yes, we offer explosion-proof variants that comply with ATEX and IECEx standards. Contact us to discuss your specific hazardous location requirements.
Q: What maintenance schedule do you recommend?
A:Your maintenance needs depend on operating conditions. Generally, inspect bearings every 6 months, check insulation resistance annually, and perform comprehensive overhauls every 3-5 years. Our service team can develop a customized maintenance plan.
Contact Us
Ready to optimize your industrial processes with our Variable frequency squirrel cage motor solutions? Reach us at sxmotor@yeah.net
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