Description
The YKK Series is a range of fully enclosed, air-air cooled (IC611/IC616) high voltage squirrel cage induction motors designed for heavy-duty industrial applications, typically rated at 6kV or 10kV with power outputs ranging from 50kW to 8MW (frame sizes H355-H1120). This series represents a benchmark in high-voltage motor technology, delivering exceptional reliability, efficiency, and performance across diverse operating conditions.
Core Design & Construction
- Robust Enclosure: Square tank-style welded steel frame (H450-H630) or cast iron (H355-H400) offering lightweight construction with superior rigidity, minimizing vibration and extending service life.
- Advanced Cooling System: Closed-loop air-air heat exchanger prevents contamination from external dust, moisture, or corrosive particles, making it ideal for harsh environments.
- Premium Insulation: F-class insulation with B-class temperature rise, combined with VPI (Vacuum Pressure Impregnation) treatment for the stator windings, ensuring excellent dielectric strength, anti-corona performance, and moisture resistance.
- Efficient Rotor Design: Available with cast aluminum or copper bar squirrel cage rotors optimized for high starting torque (up to 2.5x rated) and low slip, ensuring smooth operation under varying loads.
- High Protection: IP44/IP54 rating effectively shields internal components from dust and water ingress, enhancing durability in demanding industrial settings.
Key Performance Advantages
- Superior Efficiency: Achieves IE3/IE4 efficiency standards, significantly reducing energy consumption compared to conventional motors and lowering operational costs.
- High Power Factor: Maintains excellent power factor across the load range, minimizing reactive power losses and reducing the required capacity of power supply equipment.
- Low Noise & Vibration: Precision-balanced rotors and optimized mechanical design ensure quiet operation (≤85dB) and minimal vibration, improving workplace conditions and reducing mechanical stress on driven equipment.
- Reliable Operation: Computer-optimized electromagnetic design and rigorous quality control result in extended service intervals and reduced maintenance requirements.
Applications
The YKK Series is widely utilized as a prime mover in various industries, including:
- Power generation (driving pumps, fans, and compressors)
- Oil & gas and petrochemical processing
- Mining and mineral processing (crushers, conveyors)
- Steel and metallurgy
- Water treatment and wastewater management
- General industrial machinery (ventilators, cutting machines, material handling systems)
When paired with variable frequency drives (VFDs), the YKK Series offers enhanced speed control capabilities, making it suitable for applications requiring precise process control and energy optimization across varying load conditions.