... :1400 ,1700/min c.Insulation Class:,B d. Duty: S1 1. It's mainly for high start ... low temprature rise and low noise 3. a. Frame:90mm b. Voltage:100v c. Frequency:50/60hz d. Power:550-1100 ... w e. Speed:1400 ,1700/min g. Protection class:IP44 h. Insulation Class:,B d. Duty: S1 4. Operation conditions: ambient temperature ...