... 12p 1. General Description Y,YR series,YKK,YKS,YRKK,YRKS series medium sized high voltage three-phases asynchronous motors (shaft height ... of pipe ventilation IP44 upon request of customer requests. Other protection degree such as IP24 and IP54 are also ... water pumps, breakers, cutting machine tools, transportation equipments and other mechanical equipment. They are widely used in mining, mechanical, ...