IEEE Class 1E Motors

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Ellis & Watts offers a line of Class 1E nuclear qualified motors designed for inside containment and loss-of-coolant accident (LOCA) and/or high energy line break (HELB) Design Basis Events.

Standard features - CLICK TO SEE FULL LIST

  • Non-hygroscopic Class H insulation system
  • Bearing minimum L-10 life of 100,000 hours
  • Nuclear grade grease and paint system
  • Radiation proven at 3×107┬áRads

Optional features - CLICK TO SEE FULL LIST

  • Capacities from 1 to 150 Hp
  • Single- and two-speed designs with multiple rpm options
  • Belt- or direct-drive applications
  • NEMA TEFC and TEAO designs

Qualification test performance - CLICK TO SEE FULL LIST

  • Insulation system qualified at 40+ years per IEEE 117
  • Successful completion of UL 1446 cold shock test
  • 40+ year life based on thermal aging test per IEEE 334 Section 9
  • After aging, motor subjected to mechanical vibration, irradiation, and cyclic operation and then exposed to simulated earthquakes and high energy line break (HELB) environment while operating at full load
  • Finally, motor operated under full load for a 100-day post accident endurance test

Meets the following standards - CLICK TO SEE FULL LIST

  • IEEE 323 Standard for qualifying Class 1E Equipment for Nuclear Power Generating Stations
  • IEEE 334 Standard for Type Test of Continuous Duty Class 1E Equipment for Nuclear Power Generating Stations
  • IEEE 344 Recommended Practice for the Seismic Qualification of Class 1E Equipment for Nuclear Power Generating Stations
  • IEEE 383 Standard for Qualifying Electric Cables and Splices for Nuclear Facilities
  • NEMA MG-1
  • ASME AG-1 Code on Nuclear Air and Gas Treatment

Sample Projects - CLICK TO SEE FULL LIST

  • Lungmen NPP – Taiwan
  • Wolsong NPP – South Korea