EN 60674-3-7:1998

Specification for plastic films for electrical purposes - Part 3: Specifications for individual materials - Sheet 7: Requirements for fluoroethylene-propylene (FEP) films used for electrical insulation

Gives the requirements for copolymers of tetrafluoroethylene (TFE) and hexafluoropropylene (HFP), conventionally described as fluoroethylene-propylene (FEP), as films, with or without surface treatment to render the surface cementable and heat sealable, for type 1: General purpose; for type 2A: One side treated; for type 2B: Two sides treated.

Bestimmung für Isolierfolien für elektrotechnische Zwecke - Teil 3: Anforderungen für einzelne Werkstoffe - Blatt 7: Anforderungen an Fluorethylenpropylen-(FEP)-Folien zur elektrischen Isolierung

Spécification pour les films en matière plastique à usages électriques - Partie 3: Spécifications pour matériaux particuliers - Feuille 7: Prescriptions pour les films de fluoroéthylène-propylène (FEP) utilisés dans l'isolation électrique

Donne les prescriptions relatives aux copolymères de tétrafluoroéthylène (TFE) et d'hexafluoropropylène (HFP), appelés conventionnellement fluoroéthylène-propylène (FEP) sous forme de films, avec ou sans traitement de surface pour rendre la surface collable et thermosoudable, de type 1: Usage général; de type 2A: A traitement sur une face; de type 2B: A traitement sur les deux faces.

Specification for plastic films for electrical purposes - Part 3: Specifications for individual materials - Sheet 7: Requirements for fluoroethylene-propylene (FEP) films used for electrical insulation (IEC 60674-3-7:1992)

General Information

• Status: Published
• Publication Date: 05-Apr-1998
• Withdrawal Date: 30-Nov-1998
• ICS: 29.035.20 - Plastics and rubber insulating materials
• Technical Committee: CLC/SR 15 - Insulating materials
• Drafting Committee: IEC/TC 15 - IEC_TC_15
• Parallel Committee: IEC/SC 15C - IEC_SC_15C
• Current Stage: 6060 - Document made available - Publishing
• Start Date: 06-Apr-1998
• Completion Date: 06-Apr-1998
• Ref Project: SIST EN 60674-3-7:2001 - Specification for plastic films for electrical purposes -- Part 3: Specifications for individual materials -- Sheet 7: Requirements for fluoroethylene-propylene (FEP) films used for electrical insulation

Relations

• Replaced By: EN 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
• Effective Date: 23-Jan-2023

Overview

EN 60674-3-7:1998 (CLC) specifies requirements for fluoroethylene-propylene (FEP) films used for electrical insulation. The document covers films made from copolymers of tetrafluoroethylene (TFE) and hexafluoropropylene (HFP), supplied either untreated or with surface treatment to make them cementable and heat-sealable. The standard distinguishes material types for common insulation uses and aligns with the IEC reference IEC 60674-3-7:1992.

Key Topics

• Material scope: Copolymers of TFE and HFP, referred to as FEP.
• Surface treatment options:
  • Untreated films (type 1: general purpose)
  • One-side treated films (type 2A)
  • Two-side treated films (type 2B)
• Intended properties: Requirements focus on suitability for electrical insulation and on surface conditions to enable cementing or heat sealing where specified.
• Standardization context: Issued by CLC and referenced in national implementations (for example SIST EN 60674-3-7:2001).

This standard is primarily descriptive of required attributes and classifications rather than prescriptive of specific manufacturing processes.

Applications

FEP films that conform to EN 60674-3-7:1998 are applicable where polymeric insulating films are required and where surface bonding or heat sealing may be needed. Typical practical uses include:

• Insulation layers in electrical and electronic assemblies
• Internal film barriers or interleaves in capacitors and coils
• Applications requiring a film substrate that can be bonded or heat-sealed during assembly

Choosing the correct type (1, 2A or 2B) depends on whether the application requires untreated film or films with one or both surfaces prepared for adhesion or thermal sealing.

Related Standards

• IEC 60674-3-7:1992 - original IEC reference aligned with EN 60674-3-7:1998
• National implementations and translations (example: SIST EN 60674-3-7:2001)

Practical value: Specifying EN 60674-3-7:1998 in procurement and design helps ensure consistent material classification for FEP films, clear expectations for surface treatment (cementable or heat-sealable), and compatibility with established international references. Use this standard as a baseline when selecting FEP film suppliers or when verifying material suitability for electrical insulation applications.

Standards Content (Sample)

SLOVENSKI STANDARD
01-marec-2001
Specification for plastic films for electrical purposes - Part 3: Specifications for
individual materials - Sheet 7: Requirements for fluoroethylene-propylene (FEP)
films used for electrical insulation (IEC 60674-3-7:1992)
Specification for plastic films for electrical purposes -- Part 3: Specifications for individual
materials -- Sheet 7: Requirements for fluoroethylene-propylene (FEP) films used for
electrical insulation
Bestimmung für Isolierfolien für elektrotechnische Zwecke -- Teil 3: Anforderungen für
einzelne Werkstoffe -- Blatt 7: Anforderungen an Fluorethylenpropylen-(FEP)-Folien zur
elektrischen Isolierung
Spécification pour les films en matière plastique à usages électriques -- Partie 3:
Spécifications pour matériaux particuliers -- Feuille 7: Prescriptions pour les films de
fluoroéthylène-propylène (FEP) utilisés dans l'isolation électrique
Ta slovenski standard je istoveten z: EN 60674-3-7:1998
ICS:
29.035.20 3ODVWLþQLLQJXPHQLL]RODFLMVNL Plastics and rubber insulating
PDWHULDOL materials
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
...