International Standards

Current Global Motor Energy Efficiency Standards

All IEC (International Electrotechnical Commission) standards can be purchased at

A preview of each standard on rotating electrical machines is available below, including the table of contents, foreword, scope and normative references (both in English and French).

RatingIEC 60034-1, edition 13.02017Rating and performancePREVIEW | BUY
TestingIEC 60034-2-1, edition 2.02014Standard methods for determining losses and efficiency from tests (excluding machines for traction vehicles)PREVIEW | BUY
TestingIEC 60034-2-2, edition 1.02010Specific methods for determining separate losses of large machines from tests – Supplement to IEC 60034-2-1PREVIEW | BUY
Testing converter-fed motorsIEC 60034-2-3, 2020, edition 22020Specific test methods for determining losses and efficiency of converter-fed AC induction motorsPREVIEW | BUY
Efficiency classesIEC 60034-30-1, edition 1.02014Efficiency classes of line operated AC motors (IE-code)PREVIEW | BUY
Efficiency classesIEC TS 60034-30-22016Efficiency classes of line operated AC motors (IE-code)PREVIEW | BUY
GuideIEC 60034-31, edition 22021Efficiency classes of variable speed AC motors (IE-code)PREVIEW | BUY
Converters: extended productsIEC 61800-9-12017Ecodesign for power drive systems, motor starters, power electronics and their driven applications – General requirements for setting energy efficiency standards for power driven equipment using the extended product approach (EPA) and semi analytic (SAM)PREVIEW | BUY

Activities In The Field Of Standardization

Energy Efficient Electric Motor Driven Systems (CAISEMS)

The IEC Advisory Committee on Energy Efficiency (ACEE) TG6 launched on 20 September 2019 in Tokyo the project ‘Coordination and Alignment of IEC and ISO Standards for Energy Efficient Electric Motor Driven Systems’ (CAISEMS).

Between March and November 2020, four CAISEMS meetings were held (online). Their main task was to update a set of Background Documents and to prepare a Work Plan. The Work Plan, 2nd edition, includes concrete steps to prepare the start of an ISO & IEC Joint Working Group. Following the November 2020 CAISEMS meeting agreement preparatory work has started for the set-up of an ISO & IEC Joint Working Group, including at the outset IEC TC 2 (motors), IEC TC 22 (converters) and ISO TC 117 (fans).

For more information, download the project brief below.