Description
The YFB3 series is a high-efficiency (IE3) low-voltage dust explosion-proof three-phase asynchronous AC induction motor, specifically designed for flammable dust environments. With a rated voltage ≤1140V (compliant with GB/T 12350-2022), it meets international IEC 60034-30-1 (IE3) efficiency standards, Chinese GB 18613-2020 energy requirements, and dust explosion-proof standards GB 3836.1-2010 & GB 12476.1-2010, holding complete certification for safe operation in dust hazardous areas.
Key parameters: Frame sizes 80-355, power ratings 0.55kW-315kW, pole numbers 2-8. Rated voltages: 380V/660V (dual-voltage & customizable). Dust explosion-proof rating: DIPA21 T4, suitable for Zone 21/22 flammable dust environments with temperature class T1-T4. Standard IP55 protection (IP65 optional), Class F insulation, S1 continuous duty, stable operation at -15℃ to 40℃ (altitude ≤1000m).
Structure: Totally enclosed fan-cooled (IC411) squirrel-cage rotor, robust cast iron frame with optimized dust-proof structure. Stator windings adopt VPI insulation treatment for enhanced durability. Sealed bearings and reinforced junction box sealing prevent dust intrusion; optimized heat dissipation fins ensure low surface temperature to avoid dust ignition.
Core advantages: IE3 high efficiency reduces energy consumption by 10-15% vs standard motors. Excellent dust-proof performance, low noise (≤60dB(A)), strong starting torque, and multiple mounting types (IMB3/IMB5). Rigorously tested enclosure ensures it meets dust explosion-proof requirements, avoiding ignition of flammable dust accumulations.
Applications: Widely used in grain processing, woodworking, textile, metallurgy, and pharmaceutical industries with flammable dust. Ideal for driving fans, conveyors, mixers, and crushers, serving as core equipment for safe and energy-saving upgrades in dust-prone hazardous areas.