NF C31-420

NF C31-420

May 1977
Standard Current

Wires for electrical machinery and apparatus. Enamelled round copper wires with high dielectric properties for transformers and similar applications.

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Main informations

Collections

National standards and national normative documents

Publication date

May 1977

Number of pages

28 p.

Reference

NF C31-420

ICS Codes

29.060.10   Wires

Classification index

C31-420

Print number

1 - 01/06/1977
Table of contents
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  • AVANT-PROPOS
    3
  • 1. - GÉNÉRALITÉS
    4
  • 1.1 Domaine d'application
    4
  • 1.2 Validité
    4
  • 1.3 Modalités d'application
    4
  • 1.4 Terminologie
    4
  • 1.5 Désignation d'un fil
    4
  • 2. - FABRICATION
    5
  • 2.1 Diamètre nominal
    5
  • 3. SPÉCIFICATION
    5
  • 3.1 Échantillons - Éprouvettes
    5
  • 3.2 Classification et énumération des essais
    6
  • 3.3 Caractéristiques et technique des essais
    6
  • 3.4 Conditions de livraison
    21
  • ANNEXES
  • I. - Acceptation ou rejet d'une fourniture
    24
  • II. - Calcul de la résistance linéique
    25
  • III. - Exemple d'un schéma de montage pour le contrôle de la continuité de l'isolation (essai au bain sulfaté)
    26
  • IV. - Courbe donnant le diamètre maximal du fil en fonction du diamètre nominal
    27
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