Information technology. Telecommunications cabling requirements for remote powering of terminal equipment

Information technology. Telecommunications cabling requirements for remote powering of terminal equipment

£306.00
£306.00
£153.00
Sold out

1 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 ISO/IEC 11801 siries standards using currents per conductor of up to 500 mA;

  • 1-pair balanced cabling using currents per conductor of up to 2 000 mA;
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 ISO/IEC 11801‑1.

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.

Safety (e.g. electrical safety and protection and fire) and electromagnetic compatibility (EMC) requirements are outside the scope of this document, and are covered by other standards and regulations. However, information given by this document can be of assistance.