YD系列变极多速电动机具有可随负载性质的要求而有极地变化转速，从而达到功率的合理匹配和简化变速系统的特点，适用于矿山、机床、冶金、纺织、印染、化工、农机等部门需要逐级调速的各种传动机械。

  Widely used in such industry which have step changes of rotational speed to meet the requirement of load character , as machine tools , mining , metallurgy , textile , printing and dyeing , chemical industry and agricultural machinery. atc .

功率范围：0.35 ～ 85 kW        电动机中心高：H80 ～ 280 mm