IEEE 841.1-2023

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IEEE Standard for Process Industry–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) (Approved Draft)

Published By	Publication Date	Number of Pages
IEEE	2023

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Description

New IEEE Standard – Active. International Energy Efficiency Class 3 (IE3) (premium-efficiency) totally enclosed fan cooled (TEFC) International Cooling IC411, totally enclosed air over (TEAO) IC418 and totally enclosed non-ventilated (TENV) IC410, 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, in International Electrotechnical Commission (IEC) frame sizes (80) and larger, for severe-duty applications seen in the Process Industry (commonly referred to as IE3 (premium-efficiency) severe-duty motors) are applied in this standard. Excluded from the scope of this standard are motors with sleeve bearings, totally enclosed blower-cooled (TEBC) IC416, and additional specific features required for flameproof motors. Note-additional downloads available here: https://standards.ieee.org/wp-content/uploads/2024/02/841.1-2023_downloads.zip

PDF Catalog

PDF Pages	PDF Title
1	IEEE Std 841.1™-2023 Front cover
2	Title page
4	Important Notices and Disclaimers Concerning IEEE Standards Documents
8	Participants
10	Introduction
11	Contents
13	1. Overview 1.1 Scope 1.2 Purpose
14	1.3 Word usage 2. Normative references
16	3. Definitions, acronyms, and abbreviations 3.1 Definitions 3.2 Acronyms and abbreviations
17	4. Service conditions 4.1 Usual service conditions 4.2 Unusual service conditions
18	5. Ratings 5.1 Basis of rating 5.2 Frame assignments 5.3 Voltage ratings 5.4 Synchronous speed ratings 5.5 Enclosures 6. Electrical performance 6.1 General
19	6.2 Motor designs and starting characteristics 6.3 Power supply variations
20	6.4 Insulation system and temperature rise
21	7. Mechanical features 7.1 Bearing and lubrication
22	7.2 Rotor and shaft 7.3 Frames, endshields, and fan covers
23	7.4 Fans 7.5 Main terminal boxes and terminal leads
24	7.6 Drains 7.7 Hardware
25	7.8 Airborne sound 7.9 Vibration
26	8. Corrosion-resistant treatment 8.1 Frame paint 8.2 Assembly 8.3 Exposed internal and external stator, rotor, and shaft surfaces 8.4 Miscellaneous 9. Efficiency
27	10. Tests 10.1 Test method 10.2 Factory tests 10.3 Additional tests 10.4 Prototype tests
28	10.5 Test information supplied with motor 11. Nameplate 11.1 Nameplate marking
29	11.2 Nameplate material 12. Anti-Condensation heaters (space heaters)—requirements 13. Data exchange—user and manufacturer
30	14. Allowable options for an IEEE 841.1-2023 motor, IEEE 841.1-2023 features motor, and options excluded from referencing IEEE Std 841.1-2023 14.1 Introduction 14.2 Core technical features of an IEEE 841.1-2023 motor
31	14.3 Allowable options for an IEEE 841.1-2023 labeled motor 14.4 Allowable options for an “IEEE Std 841.1-2023 Features” motor
32	14.5 Options that do not allow a motor to reference IEEE Std 841.1-2023 in any manner
33	Annex A (informative) Motor data sheet
36	Annex B (informative) Converter fed motor applications and considerations B.1 Introduction B.2 Converter considerations
39	Annex C (informative) Bibliography
41	Back cover

Additional information

Standard Title	IEEE Standard for Process Industry–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) (Approved Draft)
Published Code	IEEE
Publication Date	2023

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IEEE 841.1-2023

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