Structure: 1. The base adopts a thin-plate polygonal lamination structure, small size and light weight. The stator and rotor are treated with vacuum pressure paint (VPI), with good insulation and electrical conductivity. 2. Standard rated voltage: 220V, 440V. 3. Rated speed: 1025, 900, 800, 725, 650, 550r / min, etc. 4. Protection features: IP23S, IP44. 5. Installation method: IC01, IC06, IC17, IC37 and ICW37A86 6. Insulation class: Class F 7. The data listed in the technical data table should be under the following conditions; a. The altitude does not exceed 1000 meters; b. The ambient air temperature is between -30 and 40 ; c. The working environment should be free of acidic, alkaline or other gases that have a corrosive effect on the insulation; there should be no explosive or flammable gases. d. Continuous working system: SI; S2; S3.