Power Range: The YE4VF Series inverter-duty motors cover a power range from 1.5 kW to 355 kW across 22 frame sizes, providing flexible selection for diverse load equipment. Available in 2, 4, 6, and 8-pole speed configurations, they meet various load characteristic requirements for a wide range of applications.
Rated Voltage: Designed for direct connection to standard three-phase AC power supplies at 380V, 400V, or 415V, 50Hz. No additional configuration is needed. The motors offer strong voltage adaptability for stable operation under different grid conditions.
Efficiency Class: This series meets the Grade 2 efficiency requirements of the GB18613-2020 standard (IE4 class), achieving an efficiency improvement of 2-4 percentage points over standard motors for significant energy savings. High-frequency, low-loss silicon steel and optimized winding design effectively suppress harmonic losses, maintaining excellent efficiency across a wide frequency range.
Power Factor: Featuring an optimized electromagnetic design, the motors deliver a high power factor of 0.88-0.92 at 50Hz. This minimizes reactive power losses, improves grid quality, reduces line losses, and enhances overall system operating efficiency.
Protection Level: With an IP55 protection rating, the motors effectively guard against dust ingress and water jets, extending service life in demanding environments. The Totally Enclosed Fan-Cooled (TEFC) construction ensures superior heat dissipation for reliable, long-term operation.
Frame Construction: The high-strength cast iron frame ensures robust durability and excellent heat dissipation, capable of withstanding significant mechanical stress for long-term, stable operation. Its corrosion-resistant surface finish provides a clean appearance and extended service life. With an IP55 protection rating, it is suitable for demanding operating environments.
Cooling Method: Features a separate forced ventilation (IC416) system with a dedicated cooling fan. This design ensures consistent airflow and superior cooling at any motor speed. The optimized airflow path provides high cooling efficiency, maintaining stable temperature rise across the entire frequency range and preventing performance loss due to overheating.
Insulation Class: The Class F insulation system is rated for a Class B temperature rise, providing a substantial thermal margin for extended insulation life and reliable operation at elevated temperatures. The stator is processed using Vacuum Pressure Impregnation (VPI), ensuring stable insulation performance and strong resistance to voltage surges for safe, long-term operation under VFD supply.
Mounting Options: Available in various configurations including B3, B5, and B35 arrangements to accommodate horizontal, vertical, and other mounting requirements. The frame feet feature a practical design with standard mounting holes for quick and secure connection to equipment, minimizing installation time.
Bearing System: Equipped with high-quality deep groove ball bearings. Insulation protection is provided as standard to effectively prevent bearing current damage, significantly extending bearing service life. The system incorporates a long-life lubrication design, extending maintenance intervals and reducing associated costs.
Starting Torque: These motors offer a high starting torque ratio of 160%-200% of rated torque, delivering excellent starting performance suitable for heavy-duty and frequent start-stop operations. They ensure smooth starting with minimal impact on the power grid and connected equipment, providing strong adaptability.
Breakdown Torque: Featuring a breakdown torque ratio of 220%-280% of rated torque, the motors possess robust overload capacity. They can reliably withstand short-term overloads and maintain stable operation under complex working conditions, ensuring high reliability.
Noise Level: Incorporating an optimized airflow design and a low-noise fan, the motors operate quietly, complying with the GB10069 standard. The typical sound pressure level at a 1-meter distance is ≤76 dB(A), contributing to an improved working environment and making them suitable for noise-sensitive locations such as office buildings and hospitals.
Vibration Grade: The rotor is dynamically balanced to meet the ISO 10816 Grade B vibration severity requirement. This ensures smooth operation, reduces stress on connected machinery, and supports long-term stable performance with a typical vibration velocity of ≤2.8 mm/s.
Duty Cycle: Rated for S1 continuous duty, the motors are engineered for reliable, long-term continuous operation with stable temperature rise. The optimized thermal design reduces temperature rise by approximately 10K compared to conventional motors, ensuring effective heat dissipation for various industrial drive applications.
Operating Temperature: Designed for reliable operation in ambient temperatures from -15°C to +40°C. With a substantial temperature rise margin, it offers strong adaptability for stable performance across various climates. The optimized cooling design ensures consistent operation even in high-temperature environments.
Altitude: Suitable for direct use at altitudes up to 1,000 meters. Applications above this altitude require derating per relevant standards. Customized solutions are available for special environments, including anti-corrosion, moisture-proof, and explosion-proof treatments.
Safety Certifications: The product is certified with CCC (China Compulsory Certification) and CE marking, confirming compliance with national electrical safety standards for reliable and safe use. Its energy-saving performance is also validated by the official China Energy Label certification.
Warranty: The complete motor is covered by an 18-month warranty, with a 12-month warranty for bearings. Comprehensive technical support and after-sales service are provided to protect customer interests, including free repair services during the warranty period.
Compliance Standards: Conforms to Chinese National Standards including GB/T 22670, GB18613-2020, and GB/T 755, with performance metrics meeting advanced international levels. The product also complies with the IEC 60034 series of international standards, fulfilling requirements for global exports.
