IEC 60287-2-3:2017

Title

Language: EN Electric cables - Calculation of the current rating - Part 2-3: Thermal resistance - Cables installed in ventilated tunnels

Language: FR Câbles électriques - Calcul du courant admissible - Partie 2-3: Résistance thermique - Câbles posés dans les tunnels ventilés

Abstract

Language: EN IEC 60287-2-3:2017 describes a method for calculating the continuous current rating factor for cables of all voltages installed in ventilated tunnels. The method is applicable to any type of cable. The method applies to natural as well as forced ventilation. Longitudinal heat transfer within the cables and the surroundings of the tunnel is assumed to be negligible. All cables are assumed to be identical within the tunnel and it is assumed that the tunnel cross-section does not change with distance along the tunnel.

Language(s)
Language: EN Language: FR
Edition
1.0
Date of issue
11.04.2017
TC 20
ICS Codes
29.060.20
Publication number
60287
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Mandatory Standard according current regulation Mandatory Standard according current regulation

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