YBSD-525 / 263-4 / 8 dual speed conveyor flameproof motors that YBSD-525 / 263-4 / 8 motor using advanced electromagnetic and mechanical design, welded steel chassis, water-cooled structure. This series motor starting torque, strong overload capacity, compact chassis, rugged and beautiful, good cooling effect, but also has low noise, low temperature rise, low vibration, high efficiency and other characteristics, especially suitable for driving various underground conveyor. Model: YBSD-525 / 263-4 / 8 conveyor flameproof two-speed three-phase asynchronous motor main technical parameters: Rated power: 525/263 kW Wiring: Y Rated voltage: 3300 V Insulation class: H grade rated current : 115/80 A job quota: S1 Rated frequency: 50 Hz Cooling: revolutions: 1488/738 r / min Dimensions: 1583 × 960 × 1138 mm Power Factor: 0.85 / 0.59 outlet sizes: G3 / 4 efficiency: 93.1 / 91% protection: IP55 pressure: ≤3.0 MPa Flow: ≥2.1m3 / h YBSD-525 / 263-4 / 8 dual speed conveyor flameproof motors