DIN EN 50174-3:2014-05

The first edition of EN 50174-3 (refer to DIN EN 50174-3 (VDE 0800-174-3):2003) has been completely revised by CENELEC/TC 215 as the last standard of the series EN 50174 in the light of the technical evolution and the feedback received from the users of the first edition. This standard specifies the requirements for the following aspects of information technology cabling and gives recommendations regarding the planning and the respective installation practices. It is applicable to all types of information technology cabling outside buildings including generic communication cabling systems designed in accordance with DIN EN 50173 series. The requirements and recommendations of this standard may be applied to cabling that is defined as part of the building. The planning of the pathway systems, spaces and structures within the core and access network cabling is excluded provided that these are not in the property of the premises owner between the premises transfer point and the buildings in the premises. However, the standard includes requirements and recommendations that provide basic safety, function and environmental objectives for mechanical, ingress and climatic characteristics (this means excluding pathway dimensions, distribution of spaces and similar constraints based on specific transmission methods). The installation practices applicable to all cabling installation methods are included by the provision of the necessary planning requirements and recommendations; with the exception of information technology cabling installed: - around or within aerial power supply or associated earth conductors; - on infrastructures carrying power supplies in excess of AC/DC 25 kV. This standard: 1) details the considerations for satisfactory installation and operation of information technology cabling; 2) excludes specific requirements applicable to other cabling systems (such as power supply cabling), however, it takes into account of the effects other cabling systems may have on the installation of information technology cabling (and vice versa) and gives general advice; 3) excludes those aspects of installation associated with the transmission of signals in free space between transmitters, receivers or their associated antenna systems (such as wireless, radio, microwave or satellite). Major changes in respect to the first edition include: a) restructuring of the contents to align with the structure of the second edition of EN 50174-1:2009 and EN 50174-2:2009 (including their associated amendments); in particular, the pertinent requirements and recommendations have been clearly distinguished and are presented in separate sub-clauses; b) where appropriate, text has been aligned with that of EN 50174-1 and EN 50174-2; c) requirements and recommendations for wide area information technology cabling have been elaborated in greater detail; d) a new Annex A on EMC and protection (the existing Annex A was renumbered as Annex B) and a new Annex C on the application of responsibilities have been added. The responsible body is DKE/GUK 715.3 "Informationstechnische Verkabelung von Gebäudekomplexen" ("Information technology cabling of building complexes") of the DKE (German Commission for Electrical, Electronic and Information Technologies) at DIN and VDE.