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BS IEC 61156-1-4:2018

BS IEC 61156-1-4:2018

$102.76

Multicore and symmetrical pair/quad cables for digital communications – Assessment of conductor heating in bundled cables due to the deployment of remote powering

Published By Publication Date Number of Pages
BSI 2018 22
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IEC 61156-1-4:2018 specifies a method to assess the thermal behaviour of cables arranged in bundles, for digital communications. A method is described to determine the temperature increase in cable bundles for certain remote powering currents as a basis to analyse the expected performance under several test arrangements described in standards dealing with the installation of cabling systems. It is only intended to provide guidance to assess the thermal behaviour of cables for digital communications in reference environmental conditions and arrangements. It is therefore not intended to become a type of test method. This first edition cancels and replaces IEC PAS 61156-1-4, published in 2010. This edition includes the following significant technical changes with respect to the previous edition: a)   Several test arrangements are considered; b)   The mathematical approach was revised.

PDF Catalog

PDF Pages PDF Title
2 undefined
4 CONTENTS
5 FOREWORD
7 INTRODUCTION
8 1 Scope
2 Normative references
3 Terms, definitions and symbols
3.1 Terms and definitions
9 3.2 Symbols
10 4 Testing procedure
4.1 General
4.2 Bundling of cables
11 Figures
Figure 1 – Bundle of cables under test
Figure 2 – Thermocouple placement
12 4.3 Testing current and measurement accuracy
4.4 Test conditions
4.5 Environmental conditions
13 Figure 3 – Free air
Figure 4 – Open conduit (Tray)
14 Figure 5 – Conduit
15 4.6 Assessment of the concatenated loop resistance of all pairs
4.7 Data submission
Figure 6 – Sealed conduit
16 4.8 Expression of results
Table 1 – Supporting information
Table 2 – Test data format
17 Annex A (informative)Modelling of cable bundle heating [3]
A.1 Cable heating model
20 A.2 Evaluation of recorded data
21 Bibliography

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BS IEC 61156-1-4:2018
$102.76