... in temperature rise, durability, quiet operation ,reduced vibration ,advanced construction ,high safety and reliability in service, convenience for application and maintenance ... ),900RPM(8 Poles 60H),750RPM(8 Poles 50Hz).6,Rated frequency:60Hz(50Hz is availiable on request)7,Rated voltage:460V ... and the relative position of conduit box are follows: 2013 High quality Nema D Standard Electric Motor