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IEC 60143-4:2023 specifies the testing of thyristor controlled series capacitor (TCSC) installations used in series with transmission lines. This document also addresses issues that consider ratings for TCSC thyristor valve assemblies, capacitors, and reactors as well as TCSC control characteristics, protective features, cooling system and system operation. IEC 60143-4:2023 cancels and replaces…

L'IEC 60143-4:2023 spécifie les essais à réaliser sur les installations de condensateurs série commandés par thyristors (CSCT) utilisées avec les lignes de transmission. Le présent document aborde également les questions liées aux caractéristiques assignées des assemblages de valve à thyristors pour CSCT, des condensateurs et des bobines d’inductance ainsi que les caractéristiques de…

IEC TS 63471:2023 provides a recommended DC voltage series for HVDC grids with a DC voltage above 1,5 kV. It concerns the selection of a nominal DC voltage of multi-terminal HVDC power transmission and distribution systems and meshed HVDC networks, grids, rather than a rated DC voltage or highest DC voltage. There is no stringent requirement to consider this DC voltage series for the DC voltage…

IEC TR 63401-3:2023, which is a Technical Report, provides an insight into the various forms of fast frequency response and frequency ride-through techniques that involve inverter-based generation sources (mainly wind and PV) in a bulk electrical system. This document first focuses on extracting the clear definition of FFR from different references around the world, while studying the mechanism…

IEC 60704-2-2:2023 EXV contains both the international standard and its extended version (EXV). This extended version of the official IEC Standard is available in English only and provides the user with a comprehensive content of the Standard. IEC 60704-2-2:2023 EXV includes the content of the references made to IEC 60704-1:2021. IEC 60704-2-2:2023 applies to electric fan heaters, designed for…

IEC 60335-2-51:2023 EXV contains both the international standard and its extended version (EXV). This extended version of the official IEC Standard is available in English only and provides the user with a comprehensive content of the Standard. IEC 60335-2-51:2023 EXV includes the content of the references made to IEC 60335-1:2020. IEC 60335-2-51:2023 deals with the safety of electric…

IEC 60335-2-60:2023 EXV contains both the international standard and its extended version (EXV). This extended version of the official IEC Standard is available in English only and provides the user with a comprehensive content of the Standard. IEC 60335-2-60:2023 EXV includes the content of the references made to IEC 60335-1:2020. IEC 60335-2-60:2023 deals with the safety of electric…

IEC 60335-2-65:2023 EXV contains both the international standard and its extended version (EXV). This extended version of the official IEC Standard is available in English only and provides the user with a comprehensive content of the Standard. IEC 60335-2-65:2023 EXV includes the content of the references made to IEC 60335-1:2020. IEC 60335-2-65:2023 deals with the safety of electric air-…

Le présent document décrit plusieurs méthodes d'essai permettant de mesurer la fraction molaire d'ammoniac dans le gaz naturel et le biométhane à l'état de traces (µmol mol−1). Il décrit la manipulation et l'échantillonnage appropriés de mélanges sous pression d'ammoniac dans le méthane appliqués à plusieurs systèmes de mesure de l'ammoniac différents. Les systèmes…

This document: a)       defines metrics as key performance indicators (KPIs) for resilience, dependability, fault tolerance and availability tolerance for data centres; b)       covers the data centre infrastructure (DCI) of power distribution and supply, and environmental control; c)        can be referred to for covering further infrastructures, e.g. telecommunications cabling; d)       defines…