YD series pole-changing multi-speed three-phase asynchronous motor is Y series three-phase asynchronous motor one of the major derived series. Due to the series motor with the load requirements of the nature of a class to change speed, so as to achieve a reasonable match and simplify the power transmission system is characterized by a mechanical system, the ideal drivers of energy conservation. In machine tools, mining, metallurgy, textile, printing and dyeing, chemical, agricultural and other industrial and agricultural sectors to be widely used. 

 YD series pole-changing multi-speed three-phase asynchronous motor for the other series of the same type motors with high efficiency, stall torque, low noise, little vibration, safe and reliable. Motors meet the "YD series change-pole multi-speed three-phase induction motors JB/T7127-93" requirement. 
 YD series pole-changing multi-speed three-phase asynchronous motor with class B insulation, rated voltage 380V, rated frequency is 50Hz, 55 class for shell protection, cooling method is IC411, continuous operation (S1). Location altitude does not exceed the motor to run 1000m; ambient air temperature changes with the seasons, but not more than 40 ℃; the lowest ambient air temperature is -15 ℃; the most humid month average maximum relative humidity of 90%, while the monthly mean minimum temperature not higher than 25 ℃. 
 YD series motor power level and power level and mounting dimensions of the correspondence with foreign advanced products quite similar. Thus the same type of advanced products with foreign good interchangeability between. Stand-alone or with the tools necessary to facilitate the export, the introduction of the device can also be used as the same type of motor spare motor.