Frame:90mm Speed:2850 ,3400 min Insulation Class:,B Duty: S1 1. It's mainly for high start torque of air compressor, 2. It's known as low temprature rise and low noise 3. a. Frame:90mm b. Voltage:115v,230v c. Frequency:50/60hz d. Power:1500-2200 w e. Speed:2850 ,3400/min g. Protection class:IP44 h. Insulation Class:,B d. Duty: S1 4. Operation conditions: ambient temperature: -20°c-40°c,altitude≤ ...