Fibre optic interconnecting devices and passive components - Connector optical interfaces - Part 3-1: Connector parameters of dispersion unshifted single mode physically contacting fibres - non-angled 2,5 mm and 1,25 mm diameter cylindrical full zirconia ferrules, core location variant 1 (IEC 86B/4226/CD:2019); Text in German and English

Electricity metering equipment (AC) - General requirements, tests and test conditions - Part 31: Product safety requirements and tests (IEC 13/1885/CDV:2023); German and English version prEN IEC 62052-31:2023

Determination of certain substances in electrotechnical products - Part 3-1: Elemental Screening by X-ray fluorescence spectrometry

Electrical energy storage (EES) systems - Part 3-1: Planning and performance assessment of electrical energy storage systems - General specification

Geometrical product specifications (GPS) - Filtration - Part 31: Robust profile filters: Gaussian regression filters (ISO/DIS 16610-31:2023); German and English version prEN ISO 16610-31:2023

Railway applications - Fixed installations - Electronic power converters - Part 3-1: AC traction applications - Electronic power compensators (IEC 62590-3-1:2022)

Binary power generation systems - Part 3-1: Safety requirements for the system with less than 500 kW in capacity

Rotating electrical machines - Part 31: Selection of energy-efficient motors including variable speed applications - Application guide (IEC 2/1932/CD:2018); Text in German and English

Wind energy generation systems - Part 31: Siting risk assessment (IEC TS 61400-31:2023)

Household and similar electrical air cleaning appliances - Methods for measuring the performance - Part 3-1: Method for assessing the reduction rate of key bioaerosols by portable air cleaners using an aerobiology test chamber (IEC PAS 63086-3-1:2023)