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Engineered to adapt to dynamic load requirements in heavy industries, this High-Torque Adjustable-Speed VFD Motor delivers precise mechanical control and consistent power output. With a rated power of 4KW (4000W), an operating voltage of 380V three-phase AC, an adjustable frequency range of 50-100HZ, and a rotational speed of 2600 RPM, it is built for demanding operational environments. The exterior presents a 34KG solid cast iron casing with a dark, corrosion-resistant industrial finish, offering a dense, vibration-dampening feel during operation. It incorporates a highly efficient TEFC (Totally Enclosed Fan-Cooled) system and an IP55 protection rating, effectively sealing internal components from airborne dust in mining sites and moisture in humid factory workshops. As a dedicated energy-saving solution, this motor optimizes power consumption curves for variable torque loads, reducing energy costs by 15-20% compared to standard fixed-speed motors. This quantifiable efficiency significantly shortens the return on investment cycle for facility upgrades, making it a preferred choice for machinery requiring frequent speed adjustments, such as machine tools and textile equipment. Additionally, it holds CSA security certification, ensuring strict compliance with international safety standards for industrial electrical use.
50-100HZ Adjustable Frequency: The motor supports smooth, stepless speed adjustment within the 50-100HZ range, allowing precise control over connected equipment (e.g., adjusting conveyor speed for different material sizes, or modifying pump flow rates). It readily interfaces with mainstream industrial frequency converters and PLC control systems, supporting high-precision open-loop or closed-loop automation networks. This flexibility eliminates the need for additional mechanical speed reducers, simplifying overall system design.
High Starting Torque: Delivering a starting torque of 1.8 times the rated torque, the motor can easily handle heavy inertia loads during startup (e.g., mining crushers, large lathes) without stalling. This drastically reduces mechanical stress on both the motor shaft and the connected machinery.
Advanced Electrical Protection: Upgraded with a specialized insulation system and bearing current protection, the internal copper windings effectively resist PWM voltage spikes generated by inverters, ensuring long-lasting stability under continuous VFD driving.
TEFC Cooling Design: The totally enclosed fan-cooled structure completely isolates internal stators and rotors from external dust, debris, and moisture. A precisely balanced built-in fan forces ambient air over the cooling fins to dissipate heat. You can barely hear the fan hum, yet it ensures the motor remains cool even during 8-hour continuous shifts, keeping the internal temperature strictly below 80℃ and preventing thermal degradation.
IP55 Protection Rating: The motor meets the stringent IP55 standard, meaning it is fully dustproof and protected against low-pressure water jets (e.g., accidental liquid splashes in washdown workshops). This makes it highly suitable for use in dusty mining excavation sites, textile mills with high airborne lint levels, and outdoor auxiliary equipment.
34KG Cast Iron Casing: The heavy-duty cast iron housing provides exceptional structural rigidity, resisting physical impact and mechanical vibration during heavy operation. Running your hand along the frame reveals a thick build that absorbs operational vibrations, reducing ambient noise to less than 70dB and creating a quieter working environment.
CSA Security Certification: The motor has passed rigorous testing by CSA (Canadian Standards Association), verifying its full compliance with global safety standards for electrical insulation integrity, temperature resistance, and mechanical stability.
B3T Mounting Design & Transmission Compatibility: The B3T horizontal mounting configuration includes standardized shaft diameters and flange interfaces. It easily pairs with parallel shaft or right-angle industrial gear reducers, accommodating complex mechanical transmission setups. The mounting base features accurately pre-drilled holes for rapid installation and secure alignment with shafts or drive belts.
The YVF variable-frequency motor is widely deployed in high-load, speed-sensitive industrial scenarios where operational durability is paramount:
Mining Equipment: Reliably powers heavy-duty conveyors, jaw crushers, and vibrating screening machines in mining facilities. The adjustable speed capability is critical here, allowing operators to adapt to varying ore sizes and densities to prevent mechanical blockages and maximize material throughput.
Machine Tools: Drives industrial lathes, milling machines, and surface grinders in manufacturing plants. The precise speed control accommodates different material hardness levels (e.g., utilizing slower rotational speeds for machining dense metals, and faster speeds for shaping plastics or softer alloys).
Textile Machinery: Operates weaving looms, spinning frames, and industrial dyeing equipment in textile factories. The stepless speed adjustment ensures consistent fabric tension and quality (e.g., finer, delicate fabrics require much slower, controlled weaving speeds to prevent thread breakage).
Power & Water Infrastructure: Controls centrifugal pump systems in power plants (for cooling water circulation) and manages water treatment facility pumps (for adjusting water flow rates based on real-time demand). This targeted control drastically reduces energy waste during off-peak, low-demand periods.
To meet diverse industrial procurement requirements, our production processes adhere to strict ISO-standardized quality management systems. Every motor undergoes rigorous full-load factory testing before dispatch, ensuring absolute performance consistency and industrial-grade reliability for large-volume orders.
Deep OEM Customization: We offer tailored adjustments for specific voltage and frequency parameters, alternative mounting configurations (such as flange or foot mounts), and upgraded protection ratings for extreme operating environments.
Supply Chain Stability: Our transparent supply chain ensures predictable lead times, while flexible payment terms and comprehensive global technical support significantly reduce procurement risks and potential equipment downtime.
No. Strictly do not use non-variable-frequency power for this motor. The YVF series is designed exclusively for frequency converter input. Connecting it directly to standard grid power (fixed 50/60HZ) will cause the internal copper windings to overheat, severely damage the advanced insulation system, or even lead to immediate motor burnout. Always verify that the frequency converter matches the motor’s rated parameters (4KW, 380V) before initiating operation.
Reliable grounding is a critical safety measure for industrial electrical equipment. During operation, the motor’s electrical components may generate leakage current. Proper grounding safely diverts this current to the earth, entirely preventing electric shock risks for floor operators. Additionally, the terminal box screws must be tightly fastened (as specified in our safety warnings) to avoid loose connections that could trigger electrical arcing or short circuits.
Fan Inspection: Every 3 months, inspect the cooling fan for accumulated debris (e.g., industrial dust, textile lint) that may obstruct airflow. Clean the fan blades and fan cowl thoroughly using compressed air or a soft-bristled brush.
Fan Cowl Integrity: Regularly ensure the fan cowl is free from cracks or physical damage. Any breach could allow contaminants to enter the motor housing and compromise cooling efficiency. Replace the cowl immediately if any structural damage is detected.
Bearing Lubrication: Lubricate the fan’s bearings annually with specialized high-temperature grease to maintain frictionless, smooth rotational operation and extend the component's lifespan.
