skip to news headlinesskip to main content


 Custom Engineered Motors
      Induction Motors
      Synchronous Motors
      DC Motors
      Wind Generators
» Stock Motors
 Drives & Controls



NEMA Premium Efficiency - Inverter, Severe Duty

Totally Enclosed Fan Cooled


HP 1HP through 300HP
Speed 3600, 1800, 1200 RPM
Voltage 460V, 575V
Frequency 60 Hz.

Electrical Features

  • Designed to meet NEMA MG-1, MG-13 and IEEE 841
  • Stock available in 460V and 575V; other voltages available upon request
  • Premium efficiency; meets or exceeds the requirements of EPACT '92 and Canadian Federal Efficiency Levels defined in CSA C390-93; Full load efficiency of all ratings is certified under the EEV Program of the CSA
  • UL recognized Class F non-hygroscopic insulation system with Inverter Duty Magnet Wire and Insulation System index, heavy heat resistance enameled copper wire insures longer winding life and reliability
  • CSA certified for Class 1, Division II, Group B, C and D with Temperature Code T3C
  • Class B temperature rise, 80°C rise by resistance method at 1.0 S.F.; 90°C rise at 1.15 SF
  • 3 Leads solderless lug terminals
  • Meets GM 7E-TA specifications

Mechanical Features

  • Bearing temperature rise is below 45°C for all 4P and 6P ratings; 50°C for all 2P motors
  • Sound power levels are below 85 dBA providing quiet operation
  • Full cast iron construction: frame,brackets, fan cover and conduit box with IP55 rated protection
  • Frame provided with two threaded drain holes with drain plugs and a drilled and tapped hole for a ground lug
  • Corrosion-resistant, cast iron conduit box has twice the volume required by NEMA. The conduit box is fully gasketed with NPT threaded conduit entry
  • Regreaseable bearing construction with inner bearing caps prevent bearing contamination
  • Non-sparking plastic or bronze fan
  • All internal rotor, stator and shaft surfaces are cleaned and coated with moisture resistant varnish; Exterior is painted with zinc-chromate epoxy base with a blue finish
  • Stainless steel hardware and nameplate
  • Vibration will not exceed 0.08 inches per second
  • Motors can be re-rated for 415, 400 and 380 volts at 50 HZ
  • CSA and UL approved for Inverter Duty per NEMA MG1 Part 31, with speed range of 20:1 variable torque and 10:1 constant torque

As a Partner in the NEMA Premium™ Electric Motor Program, TECO–Westinghouse Motor Company has determined that this product meets the NEMA Premium™ Efficiency specifications for premium energy efficiency.

MAX-E2/841 Motor
MAX-E2/841® Motor

Copyright ©2003 TECO-Westinghouse Motor Company