British Standards Institution

Source:: CENELEC
Committee:: TCT/7/2 - Telecommunications; Installation requirements: Cabling installation and UK implementation
Categories:: Information management | Standardization. General rules

Scope

This document a) addresses the support of safety extra low voltage (SELV) and limited power source (LPS) applications that provide remote power over: • 4-pair balanced cabling in accordance with the reference implementations of EN 50173 series using currents per conductor of up to 500 mA; • 1-pair balanced cabling using currents per conductor of up to 2 000 mA; and targets the support of applications that provide remote power over balanced cabling to terminal equipment, b) covers the transmission and electrical parameters needed to support remote power over balanced cabling, c) covers various installation scenarios and how these may impact the capability of balanced cabling to support remote powering, d) specifies design and configuration of cabling as specified in EN 50173-1. NOTE SELV requirements specify a maximum voltage of 60 V DC and LPS is understood in the applications referenced to be up to 100 W supplied within cabling. This document includes a mathematical model to predict the behaviour of different bundle sizes, various cabling constructions, and installation conditions for different current capacities.

Purpose

Remote powering of terminal equipment attached to cabling systems according to series EN 50173 and EN 50174 poses a number of additional requirements and constraints on twisted pair cabling systems, which need to be considered during its planning, installation and operation. This TS will provide the necessary background for support of the existing cabling standards. Evaluation Only. Created with Aspose.PDF. Copyright 2002-2023 Aspose Pty Ltd.

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Please email further comments to: debbie.stead@bsigroup.com

Standard timeline

1. Proposal

Proposal start date:

20/08/2024

Proposal end date:

16/09/2024

2. Draft

3. Public Comments

4. Comment Resolution

5. Approval

6. Publication

Learn more about the standards development process

Standards Development

TC215/Sec0949/NP/TS29125 - NP ballot for CLC ISO/IEC/TS 29125

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