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This document: a) describes the general principles for data centres upon which the requirements of the ISO/IEC22237 series are based; b) defines the common aspects of data centres including terminology, parameters and reference models (functional elements and their accommodation) addressing both the size and complexity of their intended purpose; c) describes general aspects of the facilities and…

IEC 61954:2021 RLV contains both the official IEC International Standard and its Redline version. The Redline version is available in English only and provides you with a quick and easy way to compare all the changes between the official IEC Standard and its previous edition. IEC 61954:2021 defines type, production and optional tests on thyristor valves used in thyristor controlled reactors (…

IEC 61954:2021 defines type, production and optional tests on thyristor valves used in thyristor controlled reactors (TCR), thyristor switched reactors (TSR) and thyristor switched capacitors (TSC) forming part of static VAR compensators (SVC) for power system applications. The requirements of the document apply both to single valve units (one phase) and to multiple valve units (several phases).…

IEC 61753-131-03:2021 contains the minimum tests, test severities and measurement requirements which a mechanical fibre splice need to satisfy in order to be categorised as meeting the requirements of single-mode fibre splice for use in category OP (Outdoor protected) environments, as defined in IEC 61753-1. This document for mechanical splices defines the requirements for standard optical…

IEC 60884-3-1:2021 applies to fixed or portable socket-outlets for AC only, with or without earthing contact, with a rated voltage greater than 50 V but not exceeding 440 V and a rated current not exceeding 32 A, intended for household and similar purposes, either indoors or outdoors, incorporating USB power supply. This document defines the safety and EMC requirements for socket-outlets…

This document provides a list of basic information attributes for the OMEs: —    examples of information attributes are given; —    standards that can define these information attributes are discussed in Annex A.

IEC 62999:2016+A1:2021 applies to electrical underfloor heating of dwellings and all other buildings whose use corresponds to dwellings or is at least similar, having a maximum load bearing in use of 4 kN/m2. This Standard defines the main characteristics of electrical underfloor heating and establishes the method of testing of these characteristics as information for the user. This Standard does…

1 Scope 1.1 This Standard specifies requirements for deformed and plain round steel bars for concrete reinforcement that can be furnished in cut lengths or in coils. 1.2 Two Types of bars are covered by this Standard: a) Type R — Intended for general applications. The R designation is used for specifying, ordering, and communication only, and is not rolled onto the deformed bar. b) Type W…

1 Scope 1.1 The CSA O80 Series of Standards specifies requirements related to the preservation and fire retardance of wood through chemical treatment (pressure and thermal impregnation). The subjects covered include materials and their analysis, pressure and thermal impregnation procedures, and fabrication and installation to put treated wood into service. 1.2 This Standard lists reference…

1 Scope 1.1 General This Standard specifies special requirements for the durability aspects of the design and construction of new parking structures and parts of buildings subject to vehicular traffic. This includes pedestrian traffic areas adjoining to or contained within parking structures. These include areas such as stairs, and pedestrian bridges from parking structures. The application…