... -500kw, 2,4, 6, 8p, IP44,54 class F insulation YR series (IP44) motors are 3-phase asynchronous motors with a ... and measurements for installment are in line with I.E.C. internationalstandard. Their mutual relations are similar to those of Model ... chose the series motorsof JRO2, JRO2L and CRO can use YR series (IP44) motors which are more suitableif exported singly or ...