IEC 60674-3-7:2023

Plastic films for electrical purposes - Part 3: Specifications for individual materials – Sheet 7: Fluoroethylene-propylene (FEP) films used for electrical insulation

IEC 60674-3-7:2023 gives the requirements for fluoroethylene-propylene (FEP) films used for electrical insulation. Materials which conform to this specification meet established levels of performance. However, the selection of a material by a user for a specific application can be based on the actual requirements necessary for adequate performance in that application and not based on this specification alone. Safety warning: It is the responsibility of the user of the methods contained or referred to in this document to ensure that they are used in a safe manner. This second edition cancels and replaces the first edition published in 1992. This edition constitutes a technical revision. This edition includes the following significant technical changes with respect to the previous edition:
a) the title of the standard has been changed to unify the name within the IEC 60674 series;
b) update of the normative references.

Films plastiques à usages électriques - Partie 3: Spécifications pour matériaux particuliers - Feuille 7: Films de fluoroéthylène­-propylène (FEP) utilisés dans l'isolation électrique

IEC 60674-3-7: 2023 spécifie les exigences pour les films de fluoroéthylène­propylène (FEP) utilisés dans l'isolation électrique. Les matériaux conformes à la présente spécification satisfont à des niveaux établis de performance. Toutefois, l'utilisateur peut choisir le matériau destiné à une application spécifique en se fondant sur les exigences réelles nécessaires pour assurer des performances adéquates dans le cadre de l'application considérée et non sur la présente spécification seule. Avertissement de sécurité: il incombe à l'utilisateur des méthodes contenues ou référencées dans le présent document de s'assurer que celles-ci sont utilisées en toute sécurité. Cette deuxième édition annule et remplace la première édition parue en 1992. Cette édition constitue une révision technique. Cette édition inclut les modifications techniques majeures suivantes par rapport à l'édition précédente:
a) le titre de la norme a été modifié pour harmoniser l'intitulé de la série IEC 60674;
b) les références normatives ont été mises à jour.

General Information

• Status: Published
• Publication Date: 17-Aug-2023
• ICS: 29.035.20 - Plastics and rubber insulating materials
• Technical Committee: TC 15 - Solid electrical insulating materials
• Drafting Committee: MT 3 - TC 15/MT 3
• Current Stage: PPUB - Publication issued
• Start Date: 21-Sep-2023
• Completion Date: 18-Aug-2023

Standards Content (Sample)

IEC 60674-3-7 ®
Edition 2.0 2023-08
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Plastic films for electrical purposes –
Part 3: Specifications for individual materials – Sheet 7: Fluoroethylene-
propylene (FEP) films used for electrical insulation

Films plastiques à usages électriques –
Partie 3: Spécifications pour matériaux particuliers – Feuille 7: Films de
fluoroéthylène-propylène (FEP) utilisés dans l'isolation électrique
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IEC 60674-3-7 ®
Edition 2.0 2023-08
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Plastic films for electrical purposes –

Part 3: Specifications for individual materials – Sheet 7: Fluoroethylene-

propylene (FEP) films used for electrical insulation

Films plastiques à usages électriques –

Partie 3: Spécifications pour matériaux particuliers – Feuille 7: Films de

fluoroéthylène-propylène (FEP) utilisés dans l'isolation électrique

INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
INTERNATIONALE
ICS 29.035.20 ISBN 978-2-8322-7402-6

– 2 – IEC 60674-3-7:2023 © IEC 2023
CONTENTS
FOREWORD . 3
INTRODUCTION . 5
1 Scope . 6
2 Normative references . 6
3 Terms and definitions . 6
4 Classification . 6
5 Designation . 7
6 General requirement . 7
7 Dimensions. 7
7.1 Thickness . 7
7.2 Width . 8
8 Film length/roll diameter . 8
9 Properties . 8
9.1 Properties not dependent on thickness . 8
9.2 Properties dependent on thickness . 9
9.3 Electric strength (AC test) . 9
9.4 Thermal endurance . 10
9.5 Burning characteristics. 10
10 Roll characteristics for all types . 10
10.1 General . 10
10.2 Windability/sag . 10
10.3 Joins . 10
10.4 Difference between the film width and the roll width . 11
10.5 Cores . 11
Bibliography . 12

Table 1 – Nominal thickness and permitted range of thickness . 8
Table 2 – Property not dependent on thickness for all types. 9
Table 3 – Properties dependent on thickness for all types . 9
Table 4 – Electric strength (AC test) for all types . 10
Table 5 – Maximum permissible number of joins per roll . 11
Table 6 – Difference between the film width and the roll width . 11

INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
PLASTIC FILMS FOR ELECTRICAL PURPOSES –

Part 3: Specifications for individual materials –
Sheet 7: Fluoroethylene-propylene (FEP) films
used for electrical insulation

FOREWORD
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IEC 60674-3-7 has been prepared by IEC technical committee 15: Solid electrical insulating
materials. It is an International Standard.
This second edition cancels and replaces the first edition published in 1992. This edition
constitutes a technical revision.
This edition includes the following significant technical changes with respect to the previous
edition:
a) the title of the standard has been changed to unify the name within the IEC 60674 series;
b) update of the normative references.

– 4 – IEC 60674-3-7:2023 © IEC 2023
The text of this International Standard is based on the following docu
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