文档介绍：Motors for the Long Run! Medium Voltage Motors ? Medium Voltage Motors Designed and Eng 1. Polypropylene non sparking fan runs quieter and uses less power due to motor’s superior air flow design 2. Cast iron fan cover meets NEMA “guarded” definition 3. All cast iron construction - provides rigidity and corrosion resistance 4. Class 20 cast iron same as our explosion proof motors 5. Epoxy finish paint over red alkyd oxide primer for corrosive environments 6. Internal air channels circulate cool air to bearings, resulting in longer bearing life 7. Epoxy ester rotor coating 8. Lifting lugs (2), integrally cast into frame for added safety and easier mounting 9. Epoxy VPI stator with epoxy ester overcoat 10. Grade 5 zinc dichromate hardware - resists rust and provides easy removal 11. Extended external grease fittings for ease of regreasing 12. Shaft diameters as large as inches, standard is 1045 hot rolled, available as 4140 steel for severe belting 13. Corrosion resistant automatic breather drain guards against internal condensation, one each end Blue Chip XRI ? Medi 1 2 3 4 17 18 19 20 21 23 14 A Word About Quality... Marathon Electric’s promising quality standards pass ISO 9001:2000 procedures from design and engineering through manufacturing. Our motors have earned a well deserved reputation for their outstanding performance and reliability in the toughest of industri