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IEC 60287-3-3-ed.1.0

Electric cables - Calculation of the current rating - Part 3-3: Sections on operating conditions - Cables crossing external heat sources

STANDARD published on 15.5.2007

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The information about the standard:

Designation standards: IEC 60287-3-3-ed.1.0
Publication date standards: 15.5.2007
The number of pages: 33
Approximate weight : 99 g (0.22 lbs)
Country: International technical standard
Category: Technical standards IEC

Annotation of standard text IEC 60287-3-3-ed.1.0 :

Describes a method for calculating the continuous current rating factor for cables of all voltages where crossings of external heat sources are involved. The method is applicable to any type of cable. The method assumes that the entire region surrounding a cable, or cables, has uniform thermal characteristics and that the principle of superposition applies. The principle of superposition does not strictly apply to touching cables and hence the calculation method set out in this standard will produce an optimistic result if applied to touching cables Donne une methode de calcul du facteur de dimensionnement en regime de charge continu pour les cables de toute tension dans le cas de croisements avec des sources de chaleur externes. La methode est applicable a tous les types de cables. La methode suppose que lensemble de la region au voisinage du ou des cables a des caracteristiques thermiques uniformes et que le principe de superposition est applicable. Le principe de superposition nest pas applicable, en toute rigueur, dans le cas de cables jointifs et, par consequent, la methode de calcul decrite dans cette norme conduira a un resultat optimiste si elle est appliquee a des cables jointifs