The new redesigned Marathon’s XRI® - IEEE841 line provides not only energy savings but variable speed operation, robust cast iron construction, and years of trouble-free service in mission critical applications such as debarking, cutting lines and conveyors.  The XRI®-841 Marathon motors are precision balanced, reducing the amount of vibration that can result in downtime.  Marathon Severe Duty motors are available in stock through 500 HP and loaded with features that provide added reliability.

Applications

Our 3 Phase Electric Motors XRI® IEEE841 Line are designed to be used on any of these extreme applications in the process industries:

• Chemical plants
• Oil & gas
• Chemical & marine industries
• Other severe duty environments where long life and ultra-high efficiency are desired.

This line is designed for a “Mission Critical” applications where premium efficiency, variable speed and reliability are required.

Meets IEEE45 USCG Marine Duty as standard for offshore applications

Benefits

• The MAX GUARD® Class F insulation system delivers long, dependable motor life under the adverse thermal and dielectric stresses imposed by the high switching frequencies of PWM drives
• Broad product offering designed to be applied in the oil, gas, chemical and marine industries
• Meets or exceeds NEMA Premium® efficiencies
• Meets IE3 efficiencies increase energy savings and reduce operating costs
• Performance matched to all leading brands of drives to provide years of trouble—free operation
• 100% cast iron construction: internal and external epoxy coatings
• Precision Balanced Motor
• Bearing Current Protection, as noted
• 5-year warranty

Features

• NEMA Premium® models comply with EISA 2007
• Meets IEEE-841 standard for severe duty motor applications
• Bearing current protection (BCP), as noted
• Blue Chip Series® quality, 100% cast iron construction for rigidity and reduced vibration
• Provisions to add stub shaft for an encoder (182T-449T, TEFC only)
• Inpro/Seal® VBX® bearing isolators on drive end shaft extension TENV and on both ends of TEFC
• Internal and external epoxy paint
• Constant torque speed range is listed in CT speed range column
• 1.15 service factor on sinewave, 1.0 service factor on IGBT power