Description
The YBE4 series is an ultra-high efficiency (IE4) low-voltage flameproof three-phase asynchronous AC induction motor, tailored for explosive environments. With a rated voltage ≤1140V (compliant with GB/T 12350-2022), it meets IEC 60034-30-1 (IE4) efficiency standards, GB 18613-2020 (Level 2) energy requirements, and explosion-proof standards GB 3836.1-2021/GB 3836.2-2021. As an upgraded successor to the YBX3 series, it leads the industry with full-series certifications (energy-saving, efficiency label, explosion-proof) for frame sizes H80-H355.
Key parameters: Frame sizes 80-355, power ratings 0.18kW-375kW, pole numbers 2-10. Rated voltages include 380V/660V/1140V (dual-voltage and customizable options available). Explosion-proof ratings: Ex d IIA T4 Gb/Ex d IIB T4 Gb (for factory explosive gas environments). Standard protection class IP55 (optional IP56/IP65/IP66), Class F insulation, and S1 continuous duty, ensuring stable operation at -15℃ to 40℃ and altitudes ≤1000m.
Structurally, it adopts a totally enclosed fan-cooled (IC411) squirrel-cage rotor and cast iron frame. Stator windings undergo VPI treatment for enhanced insulation. Motors ≥200 frame have non-stop oil injection/drainage systems, while 71-180 frame use sealed bearings for low maintenance. The top-mounted junction box (3/6 terminals) supports multiple wiring types, with “O”-ring seals and shaft “V”-shaped oil seals to maintain flameproof integrity.
Core advantages: 1.26% higher efficiency than IE3 motors (via low-loss steel and precision rotors), low noise (down to 58dB(A)), strong starting torque (max torque ratio 2.3), and multiple mounting types (IMB3/IMB5/IMB35). Customizable for corrosion resistance/tropicalization, with rigorously tested flameproof enclosures ensuring safety in hazardous areas.
Widely used in petrochemical, metallurgy, pharmaceutical, and general manufacturing explosive environments, it drives pumps, fans, compressors, and machine tools. It serves as a core equipment for green factory upgrades, balancing energy conservation, safety, and compliance to meet global environmental requirements.