Physics of radiation in the field of optics and illuminating engineering; efficiencies
Edition 1982-03

Information technology - Data centre facilities and infrastructures - Part 4-7: Cooling Efficiency Ratio; German version EN 50600-4-7:2020
Edition 2020-08

Rotating electrical machines - Part 2-1: Standard methods for determining losses and efficiency from tests (excluding machines for traction vehicles) (IEC 60034-2-1:2024); German version EN IEC 60034-2-1:2024
Edition 2025-03

Rotating electrical machines - Part 2-1: Standard methods for determining losses and efficiency from tests (excluding machines for traction vehicles) (IEC 60034-2-1:2014); German version EN 60034-2-1:2014
Edition 2015-02

Rotating electrical machines - Part 2-3: Specific test methods for determining losses and efficiency of converter-fed AC motors (IEC 60034-2-3:2024); German version EN IEC 60034-2-3:2024
Edition 2025-03

Rotating electrical machines - Part 2-3: Specific test methods for determining losses and efficiency of converter-fed AC motors (IEC 60034-2-3:2020); German version EN IEC 60034-2-3:2020
Edition 2021-07

Rotating electrical machines - Part 30-1: Efficiency classes of line operated AC motors (IE code) (IEC 60034-30-1:2014); German version EN 60034-30-1:2014
Edition 2014-12

Rotating electrical machines - Part 30-2: Efficiency classes of variable speed AC motors (IE-code) (IEC/TS 60034-30-2:2016); German version CLC IEC/TS 60034-30-2:2021
Edition 2024-06

Photovoltaic systems - Power conditioners - Procedure for measuring efficiency (IEC 61683:1999); German version EN 61683:2000
Edition 2000-08

Medical electrical equipment - Characteristics of digital X-ray imaging devices - Part 2: Determination of dual-energy subtraction efficiency - Detectors used for dual-energy radiographic imaging (IEC/CDV 62220-2:2022); German and English version prEN IEC 62220-2:2022
Edition 2022-11