Three Phase TEFC Motors

  • MAX-E2:841™ NEMA
MAX-E2:841™ NEMA

MAX-E1® NEMA Premium Efficiency – Footed & Round Body C-Face

Totally Enclosed Fan Cooled

  • HP: 3/4 hp through 800 hp
  • Speed: 3600, 1800, 1200, 900
  • Voltage: 230/460V (usable on 208V), 460V, 575V
  • Frequency: 60 Hz.


  • Inverter Duty Magnet Wire
  • Non-hygroscopic, Class F insulation system
  • High-grade, electro-magnetic steel laminations for low core loss and high efficiency
  • All cast-iron construction including IP55 frame, end brackets, fan cover and conduit box for rigidity and excellent corrosion resistance
  • Reinforced end turn lacing
  • Neoprene lead separator
  • High performance bearings of degassed steel
  • 90° rotatable oversized cast iron conduit box for easy connection
  • Corrosion-resistant non-sparking external fan
  • Dynamically balanced pressure die-cast aluminum rotor
  • Phenolic rust-proof base coat
  • Round-body motors feature cast-iron drip cover
  • Zn-Cd coated hardware
  • CSA Certified for Class 1, Division II, Groups B, C and D, with Temperature Code T3C
  • 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
  • Any TECO-Westinghouse Motor Co. (TWMC) motor direct coupled to a reciprocating compressor and operated without first having a system analysis performed will have a voided warranty. Upon request, TWMC will provide a shaft profile drawing (includes shaft geometry, mass elastic data, shaft torsional stiffness, weights, and inertias) and a current pulsation study (crank effort data must be provided by others), in order to allow parties other than TWMC to perform the required system analysis. Contact TWMC for pricing of these adders.

MAX-E2/841™ NEMA Premium Efficiency – Inverter, Severe Duty, TEFC

Totally Enclosed Fan Cooled

  • HP: 1 hp through 300 hp
  • 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 HPE™ (High Pulse Endurance) 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
TECO Westinghouse