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IEC 61156-5-2020 pdf free download
IEC 61156-5-2020 pdf free download.Multicore and symmetrical pairlquad cables for digital communications Part 5: Symmetrical pairlquad cables with transmission characteristics up to 1 000 MHz — Horizontal floor wiring — Sectional specification.
These cables can be used for various communication channels which use as many as four pairs simultaneously. In this sense, this document provides the cable characteristics required by system developers to evaluate new systems.
The cables covered by this document are intended to operate with voltages and currents normally encountered in communication systems. While these cables are not intended to be used in conjunction with low impedance sources, for example the electric power supplies of public utility mains, they are intended to be used to support the delivery of low voltage-and remote powering applications such as IEEE 802.3af (Power over Ethernet)—arid or further developments for example according to IEEE 802.3at (Power over Ethernet Plus) or IEEE 802.3bt. More information on the capacity to support these applications according to the installation practices are given in lEG 61156-1-4, IEC TR 61156-1-6 and ISOIIEC TS 29125.
2 Normative references
The following documents are referred to in the text in such a way that some or all of their content constitutes requirements of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.
IEC 61156-1:2007, Multicore and symmetrical pair/quad cables for digital communications — Part 1: Generic specification
€C 64456-6-4T Mu4I.Goce -and- symmetriia,t -paic/uad- oabies -Joi- -digilal ommumcaI?ons Symmelricai pair/quad cabIos-wth transmission -characteristics up -to I 000MHz — Hoizont& #oor–wir#ng-— BIank deaspeuica1on
IEC 62153-4-3, Metallic communication cables test methods — Part 4-3: Electromagnetic compatibility (EMC) — Surface transfer impedance — Triaxial method
IEC 62153-4-5, Metallic communication cables test methods — Part 4-5: Electromagnetic compatibility (EMC) — Coupling or screening attenuation — Absorbing clamp method
IEC 62153-4-9, Metallic communication cable test methods — Part 4-9: Electromagnetic compatibility (EMC) — Coupling attenuation of screened balanced cables, triaxial method
3 Terms and definitions
For the purposes of this document, the terms and definitions given in IEC 61156-1 apply.
ISO and IEC maintain terminological databases for use in standardization at the following addresses:
• IEC Electropedia: available at http://www.electropedia.org/
• ISO Online browsing platform: available at http://www.iso.org/obp
4 Installation considerations
4.1 General remarks
Installation considerations are defined in IEC 61156-1:2007, Clause 4.IEC 61156-5-2020 pdf free download.
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