IEEE 841.1-2023
International Energy Efficiency Class 3 (IE3) Premium-Efficiency, Severe Duty, Totally Enclosed Frame Surface Cooled Squirrel Cage Induction Motors--0.75 kW to 370 kW (1 hp to 500 hp)
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About This Item
841.1-2023 is a technical standard covering International Energy Efficiency Class 3 (IE3) premium-efficiency, severe duty, totally enclosed frame surface cooled squirrel cage induction motors from 0.75 kW to 370 kW (1 hp to 500 hp). It addresses motor performance and construction for power, energy, and industrial applications, helping align equipment selection with efficiency and duty expectations. For buyers, engineers, and specifiers, 841.1-2023 is useful when comparing motor requirements, verifying compliance, and supporting consistent procurement.
About 841.1-2023
This standard focuses on the design and performance characteristics of medium- to larger-range squirrel cage induction motors intended for demanding service. 841.1-2023 is relevant where premium-efficiency operation, totally enclosed frame surface cooling, and severe duty capability are important technical factors. It provides a structured reference for specifying motor characteristics across the stated power range, helping users compare products on a common basis and support consistent engineering decisions in power and industrial applications.
Where is 841.1-2023 used?
841.1-2023 is commonly used when selecting motors for industrial equipment that needs reliable continuous operation and controlled thermal performance. Typical applications may include pumps, fans, compressors, conveyors, and other driven machinery where IE3 efficiency and severe duty construction are important. The standard is especially relevant in facilities and projects that depend on repeatable motor ratings, enclosed cooling arrangements, and predictable performance across a defined horsepower and kilowatt range.
Importance in practice
In practice, 841.1-2023 helps reduce uncertainty when specifying motors for critical service. It supports clearer procurement language, better comparison between suppliers, and more consistent testing or acceptance expectations. For energy-conscious and industrial environments, the standard can also help align motor selection with efficiency targets while maintaining suitable durability and enclosure performance. Using 841.1-2023 may lower the risk of mismatched equipment and improve long-term operating consistency.
- IE3 premium-efficiency motor class
- Severe duty, totally enclosed frame surface cooled design
- Squirrel cage induction motors
- Power range: 0.75 kW to 370 kW
- Relevant to industrial and energy applications
- Publication Date: 2024
- Standard Status: Active
- Publisher: IEEE
- Subject: Power, Energy and Industry Applications
- Official IEEE: Doi link
- This Version: 841.1 (2024)
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