Power losses in voltage sourced converter (VSC) valves for high-voltage direct current (HVDC) system...
IEC 62751-2:2014+AMD1:2019+AMD2:2023 gives the detailed method to be adopted for calculating the power losses in the valves for an HVDC system based on the "modular multi-level converter", where each valve in the converter consists of a number of self-contained, two-terminal controllable voltage sources connected in series. It is applicable both for the cases where each modular cell…
Pertes de puissance dans les valves à convertisseur de source de tension (VSC) des systèmes en coura...
L'IEC 62751-2:2014+AMD1:2019+AMD2:2023 donne la méthode détaillée à adopter pour calculer les pertes de puissance dans les valves d'un système CCHT doté d'un "convertisseur multiniveaux modulaire" dont chaque valve est composée d'un certain nombre de sources de tension indépendantes commandables à deux bornes connectées en série. Elle s'applique lorsque chaque…
Tractors and machinery for agriculture and forestry — Electrical high-power interface 700 V DC / 480...
This document instructs the manufacturers of tractors and implements how to integrate mechanically and use the HPI.
NOTE The terms "tractor" and "implement” are used instead of “supply system” and “consumer system” for better understanding in this part.
Plastics — Determination of the degree of disintegration of plastic materials under composting condi...
This document specifies a method of determining the degree of disintegration of plastic materials when exposed to a laboratory-scale composting environment. The method is not applicable to the determination of the biodegradability of plastic materials under composting conditions. Further testing is necessary to be able to claim compostability.
Playground and recreational areas — Framework for the competence of playground inspectors and playgr...
This document gives guidance and requirements for the education, examination and evaluation of the inspectors’ and maintenance technicians’ competence concerning public playground and recreational areas. This document describes the knowledge and competence required for each specific task an inspector or technician performs.
This document is intended primarily for public playgrounds, but the…
Ergonomics of human-system interaction — Part 221: Human-centred design process assessment model
This document specifies the process references model (PRM) for human-centred design (HCD) according to ISO 9241-220, as well as the process assessment model (PAM) for assessing these processes, based on ISO/IEC 33020 and in accordance with the requirements of ISO/IEC 33004.
This HCD PAM contains a set of indicators to be considered while interpreting the intent of the HCD PRM defined in ISO 9241-…
Plastiques — Détermination du degré de désintégration de matériaux plastiques dans des conditions de...
Le présent document spécifie une méthode de détermination du degré de désintégration de matériaux plastiques exposés à un environnement de compostage en laboratoire. La méthode ne s’applique pas à la détermination de la biodégradabilité des matériaux plastiques dans des conditions de compostage. D’autres essais seront nécessaires pour pouvoir revendiquer l’aptitude au compostage.
