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1. Domaine d'application 1.1 Cette norme définit les valeurs de rendement énergétique pour les transformateurs de distribution à isolant liquide. La méthode du coût d'exploitation total (CET) est le moyen recommandé pour arriver à ces valeurs de rendement énergétique, particulièrement pour les services publics d'électricité. Cette norme définit aussi une méthode optimale pour les…

1. Scope and Purpose 1.1 Scope This Standard applies to self-propelled boom-supported integral chassis elevated work platforms that have a platform capable of being positioned completely beyond the base and that are used to position personnel, along with their necessary tools and materials, at work locations. Self-propelled boom-supported elevating work platforms (aerial platforms) are…

This National Standard of Canada is based on International Standard CEI/IEC 60598-2-5:1998. Scope This part of IEC 60598 specifies requirements for floodlights for use with tungsten filament, tubular fluorescent and other discharge lamps on supply voltages not exceeding 1 000 V. It is to be read in conjunction with those sections of IEC 60598-1 to which reference is made. This…

IEC 62056-42:2002 specifies the physical layer services and protocols within the Companion Specification for Energy Metering (COSEM) three-layer connection oriented profile for asynchronous data communication. In annex A, an example of how this physical layer can be used for data exchange through the Public Switched Telephone Network (PSTN) using intelligent Hayes modems is given. Annex B gives…

IEC 62056-42:2002 specifies the physical layer services and protocols within the Companion Specification for Energy Metering (COSEM) three-layer connection oriented profile for asynchronous data communication. In annex A, an example of how this physical layer can be used for data exchange through the Public Switched Telephone Network (PSTN) using intelligent Hayes modems is given. Annex B gives…

Specifies the data link layer for connection-oriented, HDLC-based, asynchronous communication profile. This publication is of high relevance for Smart Grid.

Is applicable to composite string insulators with a specified mechanical load (SML) of 40 kN and 70 kN for a.c. overhead distribution lines with a nominal voltage greater than 1 000 V and a frequency not greater than 100 Hz. It also applies to insulators of similar design used in substations or on electric traction lines. This consolidated version consists of the first edition (1998) and its…

S'applique aux isolateurs composites de charge mécanique spécifiée (CMS) de 40 kN et 70 kN destinés aux lignes aériennes à courant alternatif de tension nominale supérieure à 1 000 V et de fréquence inférieure ou égale à 100 Hz. Elle est également applicable à des isolateurs similaires utilisés dans les postes de transformation et sur les lignes de traction. Cette version consolidée…

The formulae specified in this International Standard are intended to establish a uniformly acceptable method for calculating the pitting resistance and bending strength capacity of industrial gears with spur or helical teeth. The rating formulae in this International Standard are not applicable to other types of gear tooth deterioration such as plastic yielding, micropitting, scuffing, case…

La présente Recommandation | Norme internationale définit les services TTP nécessaires à la prise en charge des applications de signature numérique aux fins de non-répudiation de création de documents. La présente Recommandation | Norme internationale définit également les interfaces et protocoles permettant l'interopérabilité entre des entités associées à ces services TTP. Les définitions…