... : IP23~56, 1. General Description Y,YR series,YKK,YKS,YRKK,YRKS series medium sized high voltage three-phases asynchronous motors (shaft height 355-630mm ... are insulated. Depending on the output and speed of the motor, rolling bearing or sleeve bearing of protection IP44 is used ... load in the Technical Date Table. 2. The terminal voltage of the motor should not be less than 85% of its rated ...