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Standard

IEEE 841-2021

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Abstract

Revision Standard - Active. This standard applies to premium-efficiency totally enclosed fan-cooled (TEFC) and totally enclosed nonventilated (TENV), horizontal and vertical, single-speed, squirrel cage polyphase induction motors, 0.75 kW to 370 kW (1 hp to 500 hp), and up to 4000 V nominal, in National Electrical Manufacturers Association (NEMA) frame sizes 143T and larger, for petroleum, chemical, and other severe-duty applications (commonly referred to as premium-efficiency severe-duty motors). Excluded from the scope of this standard are motors with sleeve bearings and additional specific features required for explosion-proof motors.

Products specifications

  • Standard from IEEE
  • Published:
  • Document type: IS
  • Pages
  • Publisher: IEEE
  • Distributor: IEEE
  • ICS: 29.160.30
  • National Committee: IEEE Industry Applications Society / Petroleum and Chemical Industry

Product Relations

  • Referred by: IEEE 1349-2021
  • Refers: IEEE 112-2017
  • Refers: IEEE 117-2015
  • Revises: IEEE 841-2009
  • Refers: IEEE 1776-2008
  • Refers: IEEE 522-2004
  • Refers: ASME B1.1, Unified Inch Screw Threads (UN, UNR, and UNJ Thread Forms)
  • Refers: ABMA 20, Radial Bearings of Ball, Cylindrical Roller and Spherical Roller Types--Metric Design
  • Refers: ASTM B117, Standard Practice for Operating Salt Spray (Fog) Apparatus.
  • Refers: NFPA 70®, National Electrical Code®(NEC®).
  • Refers: IEC 60034-2-1, Rotating Electrical Machines—Part 2-1: Standard methods for determining losses and efficiency from tests (excluding machines for traction vehicles)
  • Refers: CSA C390-10, Test methods, marking requirements, and energy efficiency levels for three-phase induction motors.
  • Refers: NEMA MG 1, Motors and Generators.