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Efficiency of Induction Motors Addressed in IEEE 841 Revision

June 1, 2009 // Published as a news service by IHS

  
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The Institute of Electrical and Electronics Engineers (IEEE) approved a revision to IEEE 841, a standard for fan-cooled squirrel cage induction motors.

IEEE 841 - 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) was first published in 2001.

This standard applies to premium efficiency totally enclosed fan-cooled, horizontal and vertical, single-speed, squirrel cage polyphase induction motors.

The standard includes motors up to and including 370 kilowatts (500 horsepower) and 4000 volts in National Electrical Manufacturers Association frame sizes 143T and larger for petroleum, chemical and other "severe" duty applications (commonly referred to as premium efficiency severe duty motors), according to IEEE.

Source: Institute of Electrical and Electronics Engineers Standards Association (IEEE-SA).


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