Baldor-Reliance Motor, 20HP,1765RPM,3PH,60HZ,256T,3944M,OPSB,F2Features:Heavy duty framesBall bearingsMoisture resistant ISR® (Inverter Spike Resistant) copper windingsLow-loss electrical lamination grade steelThree year warranty.Typical Applications:Typical applications include operations where continuous or frequent duty is required. Super-E Motors are designed to conserve energy over extended time periods. Inverter rated per NEMA MG1 Part 31.4.4.2. Suitable for variable torque applications and 20:1 constant torque speed range with properly sized and adjusted variable frequency drives. Product Specifications HORSEPOWER20 ENCLOSUREOPSB FRAME256T MOUNTINGRigid NAMEPLATE RPM1765 PHASE3 MOTOR RPM 60Hz1765 VOLTAGE200 HERTZ60 SERVICE FACTOR1.15 AMBIENT TEMP C40 WEIGHT237 RPM RANGE1701-1800 DESIGN CODEB BEARING-DRIVE-END6309 BEARING-OPP-DRIVE-END6208 FL EFFICIENCY93 INSULATION CLASSF FL AMPS54.3 KVA-CODEH 208V AMPS54.5 BRANDBaldor-Reliance DOE-CODE-- MANUFACTURER PART #EFM2515T-8 is_motorYes ENCLOSURE TYPEOpen/Drip Proof POWER-FACTOR85 DRIVE END FLANGEStandard C-DIMENSION INCHES21.69 SERIAL-NUMBER-- POLES4 SPEC. NUMBER39K070W949G1