E691 Severe Duty/Automotive Duty NEMA Premium XRI Totally Enclosed, Rigid Base, Three Phase
Model Number: E691
Chemical plants, paper mills, refineries, mines, food processing, foundries, and other severe duty environments where long life and ultra-high efficiency are desired. Guaranteed efficiencies offer an eXtra Return on your Investment when using these premium efficiency motors on high cycle or long run applications.
Meets or exceeds NEMA Premium efficiencies, except where noted. NEMA Premium models are in compliance with EISA2007. Blue Chip quality, 100% cast iron construction for rigidity and reduced vibration, Provisions to add stub shaft for an encoder (182T-449T, TEFC only), Internal and external epoxy paint, MAX GUARD Class F Insulation System, 1.15 Service Factor on sinewave, 1.0 Service Factor on IGBT power, Bearing caps (254T and larger), Precision Balanced, Extended grease tubes, regreasable in service, Brass drain and breather, Meets IEEE45 USCG Marine Duty, IP54 Construction, Meets Ford EM1 Automotive Duty Specification, Hazardous Duty Division 2 CSA certification nameplate, for hazardous locations, Class I, Groups A, B, C and D, Meets temperature code T2B, Actual test and vibration data supplied with each motor, Ball bearings, except where noted, UL Recognized (through 449T) CSA Certified, Three year warranty
Available With Nameplate Modification (through 40 HP): 2:1, 20:1, or 1000:1 Constant Torque, 1.0 Service Factor on IGBT (PWM) power, 1.25 Service Factor through 40 HP(sinewave only), 50HZ at same HP, 1.0 Service Factor through 40 HP (sinewave only), Contact Marathon Electric for optional nameplate markings on 50 HP and larger
51.69 C Dimension
Class H Insulation; Exempt from NEMA Premium efficiency requirement; Roller Bearing on shaft end for belted load only
Cross Reference: 449TTFS6537
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