Y series motors are totally endosed fan cooled (TEFC), three-phase squirrel cage induction motors, it is national unifom design in confomity with the relevant standards of IEC34-1 and JB/T10391-2002,enjoys international interchange able features. Y series motors have outstanding perfomance such as high efficiency, energy saving, high starting torque, low noise, slight vibration,reliable operation and easy maintenance ,etc. Y series motors are widely used in places, where do not exists combustible,explosive or corrosive gas, and without any specialrequirements, such as machine tools, pumps, fans,transport machinery, mixer, agriculture machinery and food machines, etc.