IEEE 841-2009
Standard for petroleum and chemical industry - Premium-efficiency, severe-duty, Totally Enclosed Fan-Cooled (TEFC) squirrel cage induction motors - Up to and including 370 kW (500 hp)

Standard No.

IEEE 841-2009

Release Date

2009

Published By

Institute of Electrical and Electronics Engineers (IEEE)

Status

Be replaced

Replace By

IEEE 841-2021

Latest

IEEE 841-2021

Scope

This standard applies to premium-efficiency totally enclosed fan-cooled (TEFC), horizontal and vertical, single-speed, squirrel cage polyphase induction motors, up to and including 370 kW (500 hp), and 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.

IEEE 841-2009 Referenced Document

• ABMA 20-1996 Radial Bearings of Ball, Cylindrical Roller and Spherical Roller Types Metric Design
• ABMA 9-1990 Load Ratings and Fatigue Life for Ball Bearings
• ASTM B117-97 Standard Practice for Operating Salt Spray (Fog) Apparatus
• NEMA MG 1-2006 Motors and Generators Includes Revision 1: 2007; Incorporates Errata: 12/08/2008
• NFPA 70-2005 

IEEE 841-2009 history

• 1970 IEEE 841-2021 IEEE Standard for Petroleum and Chemical Industry--Premium-Efficiency, Severe-Duty, Totally Enclosed Squirrel Cage Induction Motors from 0.75 kW to 370 kW (1 hp to 500 hp)
• 2009 IEEE 841-2009 Standard for petroleum and chemical industry - Premium-efficiency, severe-duty, Totally Enclosed Fan-Cooled (TEFC) squirrel cage induction motors - Up to and including 370 kW (500 hp)
• 2002 IEEE 841/INT 1-2-2002 IEEE Standards Interpretation for IEEE Std 841™-1994 IEEE Standard for the Petroleum and Chemical Industry-Severe Duty Totally Enclosed Fan-Cooled (TEFC) Squirrel Cage Induction Motors-Up to and Including 500 hp
• 2001 IEEE 841/INT 1-2001 IEEE Standards Interpretation for IEEE Std 841-1994
• 2001 IEEE 841-2001 Petroleum and chemical industry - Severe duty Totally Enclosed Fan-Cooled (TEFC) - Squirrel cage induction motors, up to and including 370 kW (500 hp)
• 1994 IEEE 841-1994 Petroleum and chemical industry - Severe duty Totally Enclosed Fan-Cooled (TEFC) squirrel-cage induction motors - Up to and including 500 hp
• 1986 IEEE 841-1986 RECOMMENDED PRACTICE FOR CHEMICAL INDUSTRY SEVERE DUTY SQUIRREL-CAGE INDUCTION MOTORS - 600 V AND BELOW