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BS IEC 60287-1-3:2023 – TC

BS IEC 60287-1-3:2023 – TC

$186.33

Tracked Changes. Electric cables. Calculation of the current rating – Current rating equations (100 % load factor) and calculation of losses. Current sharing between parallel single-core cables and calculation of circulating current losses

Published By Publication Date Number of Pages
BSI 2023 58
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PDF Catalog

PDF Pages PDF Title
36 undefined
38 CONTENTS
39 FOREWORD
41 INTRODUCTION
42 1 Scope
2 Normative references
3 Terms, definitions and symbols
3.1 Terms and definitions
3.2 Symbols
43 4 Description of method
4.1 General
44 4.2 Outline of method
46 Table 1 – Values of α for conductors
47 4.3 Matrix solution
48 Annex A (informative) Example calculations
A.1 Overview
A.2 Example 1
A.2.1 General
49 A.2.2 Calculations
Table A.1 – Sheath loss factor calculation according to IEC 60287-1-1
51 Table A.2 – Sheath current and sheath loss factor calculation per phase
52 Table A.3 – Calculated values of di,k
Table A.4 – Calculated values of zz
53 Table A.5 – Array [Z] including coefficients for currents
54 A.3 Example 2
A.4 Example 3
Table A.6 – Sheath current and sheath loss factor calculation per phase
55 A.5 Example 4
Table A.7 – Sheath current and sheath loss factor calculation per phase
Table A.8 – Sheath current and sheath loss factor calculation per phase
56 Annex B (informative) Example of the computation of the coefficient α for hollow core conductors
Figure B.1 – Representation of a hollow core conductor
57 Bibliography

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BS IEC 60287-1-3:2023 - TC
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