Short-circuit currents in three-phase AC systems - Part 4: Examples for the calculation of short-circuit currents (IEC TR 60909-4:2021)

Oil and gas industries including lower carbon energy - Completion fluids and materials - Part 2: Measurement of properties of proppants used in hydraulic fracturing and gravel-packing operations (ISO/DIS 13503-2:2024); English version prEN ISO 13503-2:2024

Oil and gas industries including lower carbon energy - Completion fluids and materials - Part 2: Measurement of properties of proppants used in hydraulic fracturing and gravel-packing operations (ISO/DIS 13503-2:2024)

Gas pressure regulators for inlet pressure up to 10 MPa (100 bar); German version EN 334:2019/FprA1:2024

Low-voltage switchgear and controlgear - Part 4-2: Contactors and motor-starters - Semiconductor motor controllers, starters and soft-starters (IEC 121A/562/CDV:2023); German and English version EN IEC 60947-4-2:2023/prA1:2023

Medical electrical equipment - Part 2-66: Particular requirements for the basic safety and essential performance of hearing aids and hearing aid systems

Anaesthetic and respiratory equipment - Tracheal tubes and connectors (ISO 5361:2023); German version EN ISO 5361:2023

IEC 61000-3-3-A2 Ed.1: Test conditions for tumble dryers

Medical electrical equipment - Part 2-3: Particular requirements for the basic safety and essential performance of short-wave therapy equipment (IEC 62D/1846/CDV:2021); German and English version EN 60601-2-3:2015/prA2:2021

Determination of RF field strength, power density and SAR in the vicinity of radiocommunication base stations for the purpose of evaluating human exposure (106/550/CDV:2021); prEN IEC 62232:2021