YR series motor from 4kw-500kw, 2,4, 6, 8p, IP44,54 class F insulation YR series (IP44) motors are 3-phase asynchronous motors ... start the squirrelcage rotor motor, long and frequent start and in connecting the electric shaftto drive synchronously. The series motors are sealed ... and the operation of this motor is S1(continous running). Connection mode: (3KW.Y);Rotor Y. The series motors have a lot ...