Energy efficiency requirements for general purpose electric motors: Accelerating the global adoption of energy efficient electric motors

Accelerating the global adoption of energy efficient electric motors © 2025United Nations Environment Programme ISBN:978-92-807-4214-5Job number:CLI/2696/PADOI:https://doi.org/10.59117/20.500.11822/47277 This publication may be reproduced in whole or in part and in any form for educational or non-profitservices without special permission from the copyright holder, provided acknowledgement of the sourceis made. The United Nations Environment Programme would appreciate receiving a copy of anypublication that uses this publication as a source. No use of this publication may be made for resale orany other commercial purpose whatsoever without prior permission in writing from the United NationsEnvironment Programme. Applications for such permission, with a statement of the purpose and extentof the reproduction, should be addressed tounep-communication-director@un.org. Disclaimers The designations employed and the presentation of the material in this publication do notimply theexpression of any opinion whatsoever on the part of the Secretariat of the United Nations concerning thelegal status of any country, territory or city or area or its authorities, or concerning the delimitation of itsfrontiers or boundaries. Mention of a commercial company or product in this document does not imply endorsement by theUnited Nations Environment Programme of the authors. The use of information from this document forpublicity or advertising is not permitted. Trademark names and symbols are used in an editorial fashionwith no intention on infringement of trademark or copyright laws. The views expressed in this publication are those of the authors and do not necessarily reflect the viewsof the United Nations Environment Programme. We regret any errors or omissions that may have beenunwittingly made. © Maps, photos and illustrations as specified Suggested citation:United Nations Environment Programme (2025).Energy efficiency requirements forgeneral purpose electric motors: Accelerating the global adoption of energy efficient electric motors, ModelRegulation Guidelines (March 2025).Paris.https://wedocs.unep.org/20.500.11822/47277 Production:United Nations Environment Programme’s United for Efficiency (U4E) URL:https://www.unep.org/resources/toolkits-manuals-and-guides/energy-efficiency-requirements-general-purpose-electric Acknowledgements TheseModel Regulation Guidelines for Electric Motors were developed by the United NationsEnvironmentProgramme(UNEP)United for Efficiency(U4E)initiative,in collaboration with theInternational Copper Association (ICA). UNEP would like to thank the Energy-Efficient Motor Systems Expert Taskforce for their valuablecomments and advice: Contributors to the first edition of the Motors Policy Guide (2017): Glossary Compliance:conforming to a rule,such as a law,policy,specification or standard.Also,fulfilment bycountries/businesses/ individuals of emission reduction and reporting commitments under the UNFCCC and theKyoto Protocol. (UNFCCC) Conformité Européenne Marking(CE Marking):states that a product is assessed before being placed on the marketand meets European Union safety, health and environmental protection requirements. Used in the EuropeanEconomic Area (EEA), consisting of the 28 European UnionMember States, and the European Free Trade Association(EFTA) countries i.e. Iceland, Liechtenstein and Norway. Per decision No 768/2008/ EC of the European Parliamentand of the Council of 9 July 2008 on a common framework for the marketing of products, and repealing CouncilDecision 93/465/EEC. Direct Efficiency Determination:methodby which the determination of efficiency is made by measuring directly theinput power and the output power. Duty:the statement of the load(s) towhich the motor is subjected, including,if applicable, starting, electric braking,no-load and rest and de-energised periods, and including their durations and sequence in time. Duty Type: a continuous, short time or periodic duty, comprising one or more loads remaining constant for theduration specified, or a non-periodic duty in which generally load and speed vary within the permissible operatingrange. Duty type S1–Continuous-runningduty: Operation at a constant load maintained for sufficient time to allowthe motor to reach thermal equilibrium. Full Load:the load that causes a motor to operate at its rating. Full Load Value:a quantity value for a motor operating at full power, torque, current or speed. Indirect Efficiency Determination:method by which the determination of efficiencyis made by measuring the inputpower or the output power and determining the total losses. Those losses are added to the output power, thus givingthe input power, or subtracted from the input power, thus giving the output power. Inherent speed:means the rotation speed of the fan, when the fan is operated at nominal or rated supply conditionsof the motor; Load:all the values of the electrical and mechanical quantities that signify the dem