YH series high slip three-phase induction motor (H80-H280) YH series high slip three-phase induction motor is derive series of Y series, it has characteristic with big stop up change torque、small stop up change current、high change difference ratio、soft machine speciality etc. It is the same with big drive flywheel torque and asymmetry impact load along with work occasion of positive reversal many times. Example: hammer machine、forfex machine、punch、forge smelt metal machine etc. machine equipment. It power class、externality and install size has sameness with same machine seat of Y series. Work mode for break continue work system S3, load continuance has four type:15,25,40,60% etc. The power supply of series YH is: rated voltage 380V, rated frequency 50 Hz, the insulation class B and the protection degree IP44.