Sécurité électrique dans les réseaux de distribution basse tension au plus égale à 1 000 V en couran...
L'IEC 61557-7:2019+AMD1:2023 spécifie les exigences applicables aux appareils de mesure destinés à soumettre à essai l'ordre des phases dans les réseaux de distribution triphasés. L'indication de l'ordre des phases peut être mécanique, visuelle et/ou audible. Le présent document ne s'applique pas aux mesures supplémentaires destinées à d'autres grandeurs. Elle ne s…
Microgrids - Part 3-4: Technical requirements - Microgrid monitoring and control systems
IEC TS 62898-3-4:2023 provides technical requirements for the monitoring and control of microgrids. This document applies to non-isolated or isolated microgrids integrated with distributed energy resources. This document describes the specific recommendations for low-voltage (LV) and medium-voltage (MV) microgrids.
This document focuses on standardization of the architecture, functions, and…
Fixed resistors for use in electronic equipment - Part 8: Sectional specification: Fixed surface mou...
IEC 60115-8:2023 is applicable to fixed surface mount resistors for use in electronic equipment. These resistors are typically described according to types (different geometric shapes) and styles (different dimensions) and product technology. These resistors have metallized terminations and are primarily intended to be mounted directly onto a circuit board.
The object of this document is to…
Résistances fixes utilisées dans les équipements électroniques - Partie 8: Spécification intermédiai...
L’IEC 60115-8:2023 s’applique aux résistances fixes pour montage en surface utilisées dans les équipements électroniques.
Ces résistances sont généralement décrites selon des types (différentes formes géométriques), des modèles (différentes dimensions) et des technologies de produits. Ces résistances comportent des sorties métalliques et sont conçues principalement pour être montées directement…
Measurement procedures for materials used in photovoltaic modules - Part 2-1: Polymeric materials - ...
IEC 62788-2-1:2023 specifies the safety requirements for flexible polymeric front- and backsheet constructions, which are intended for use as relied-upon insulation in photovoltaic (PV) modules. The specifications in this document define the specific requirements of polymeric front- or backsheet constructions on the component level and cover mechanical, electrical, visual and thermal…
Procédures de mesure des matériaux utilisés dans les modules photovoltaïques - Partie 2-1: Matériaux...
IEC 62788-2-1:2023 spécifie les exigences de sécurité pour les constructions souples de faces avant et de faces arrière polymères, prévues pour être utilisées comme isolation attendue dans les modules photovoltaïques (PV). Les spécifications du présent document définissent les exigences spécifiques des constructions des faces avant ou arrière polymères au niveau des composants et couvrent la…
Calculation of load capacity of bevel gears — Part 3: Calculation of tooth root strength
This document specifies the fundamental formulae for use in the tooth root stress calculation of straight and helical (skew), Zerol and spiral bevel gears including hypoid gears, with a minimum rim thickness under the root of 3,5 mmn. All load influences on tooth root stress are included, insofar as they are the result of load transmitted by the gearing and able to be evaluated quantitatively.…
Calculation of load capacity of bevel gears — Part 1: Introduction and general influence factors
This document specifies the methods of calculation of the load capacity of bevel gears, the formulae and symbols used for calculation, and the general factors influencing load conditions.
The formulae in this document are intended to establish uniformly acceptable methods for calculating the load-carrying capacity of straight, helical (skew), spiral bevel, Zerol and hypoid gears. They are…
Natural gas — Upstream area — Determination of drag reduction in laboratory for slick water
This document specifies a method for the determination of drag reduction of slick water, which is mainly used to evaluate the drag reduction performance of slick water.
This document uses the pipeline method to evaluate the drag reduction, which is currently recognized as the best method to evaluate the drag reduction performance.
This document describes the device, experimental conditions and…
This document defines visual aspects for the identification and assessment of product characteristics for friction materials in terms of quality and for commercial and technical agreements. The sequence of the product characteristics represents no order of priority. Inspection is carried out in unused, “as supplied” condition.
In some characteristic features, there are differences between brake…
