... NEMA standards , suitable for Beam Pumping Units application with special high slip (5 to 13%),very high ... , quiet operation ,reduced vibration ,advanced construction ,high safety and reliability in service, convenience for application ... Design Standard: NEMA MG13,Frame No:213T~449T4,Output Range:2~208HP.5,Synchronous Speed:1200RPM ... box are follows: 2013 High quality Nema D Standard Electric Motor