EN IEC 60674-3-4:2022

Plastic films for electrical purposes - Part 3: Specifications for individual materials - Sheets 4: Polyimide films used for electrical insulation

This International Standard gives the requirements for polyimide films used for electrical purposes. Materials which conform to this specification meet established levels of performance. However, the selection of a material by a user for a specific application should 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.

Isolierfolien für elektrotechnische Zwecke - Teil 3: Bestimmungen für einzelne Materialien - Blatt 4: Polyimid-Folien zur elektrischen Isolierung

Films plastiques à usages électriques - Partie 3: Spécifications pour matériaux particuliers - Feuille 4: Films de polyimide utilisés dans l'isolation électrique

IEC 60674-3-4:2022 spécifie les exigences pour les films de polyimide à usages électriques. Les matériaux conformes à la présente spécification satisfont à des niveaux établis de performance. Toutefois, le choix d’un matériau par un utilisateur pour une application spécifique repose sur les exigences réelles nécessaires pour obtenir des performances adéquates de l’application concernée, et non sur la seule présente spécification. 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 1993. Cette édition constitue une révision technique. Cette édition inclut les modifications techniques majeures suivantes par rapport à l'édition précédente:  le présent document a fait l'objet d'une révision rédactionnelle et technique complète, et a été intégré à la série de normes IEC 60674; de nouveaux types ont été ajoutés; les plages d'épaisseurs ont été étendues; des modifications ont été apportées aux exigences relatives à certains types existants.

Plastične folije za električne namene - 3. del: Specifikacije za posamezne materiale - 4. list: Poliimidne folije, ki se uporabljajo za električno izolacijo (IEC 60674-3-4:2022)

Ta mednarodni standard določa zahteve za poliimidne folije za električne namene.
Materiali, ki so skladni s to specifikacijo, ustrezajo določenim ravnem delovanja. Vendar naj bi uporabnik material za določeno uporabo izbral glede na dejanske zahteve, ki omogočajo ustrezno delovanje pri tej uporabi, in ne samo na podlagi te specifikacije.
Varnostno opozorilo: končni uporabnik je odgovoren za zagotavljanje varne uporabe metod, ki so zajete ali omenjene v tem dokumentu.

General Information

• Status: Published
• Publication Date: 11-Aug-2022
• ICS: 29.035.20 - Plastics and rubber insulating materials
• ICS: 29.040.20 - Insulating gases
• ICS: 83.140 - Rubber and plastics products
• Technical Committee: CLC/SR 15 - Insulating materials
• Drafting Committee: IEC/TC 15 - IEC_TC_15
• Current Stage: 6060 - Document made available - Publishing
• Start Date: 12-Aug-2022
• Completion Date: 12-Aug-2022
• Ref Project: SIST EN IEC 60674-3-4:2022 - Plastic films for electrical purposes - Part 3: Specifications for individual materials - Sheets 4: Polyimide films used for electrical insulation (IEC 60674-3-4:2022)

Relations

• Replaces: EN 60674-3-4 to 6:1995 - Specification for plastic films for electrical purposes - Part 3: Specifications for individual materials - Sheets 4 to 6: Requirements for polyimide films used for electrical insulation
• Effective Date: 23-Jan-2023

Standards Content (Sample)

SLOVENSKI STANDARD
SIST EN IEC 60674-3-4:2022
01-oktober-2022
Nadomešča:
SIST EN 60674-3-4 to 6:1998

Plastične folije za električne namene - 3. del: Specifikacije za posamezne materiale

- 4. list: Poliimidne folije, ki se uporabljajo za električno izolacijo (IEC 60674-3-

4:2022)

Plastic films for electrical purposes - Part 3: Specifications for individual materials -

Sheets 4: Polyimide films used for electrical insulation (IEC 60674-3-4:2022)
Isolierfolien für elektrotechnische Zwecke - Teil 3: Bestimmungen für einzelne

Materialien - Blatt 4: Polyimid-Folien zur elektrischen Isolierung (IEC 60674-3-4:2022)

Films plastiques à usages électriques - Partie 3: Spécifications pour matériaux

particuliers - Feuille 4: Films de polyimide utilisés dans l'isolation électrique (IEC 60674-3

-4:2022)
Ta slovenski standard je istoveten z: EN IEC 60674-3-4:2022
ICS:
29.035.20 Plastični in gumeni izolacijski Plastics and rubber insulating
materiali materials
83.140.10 Filmi in folije Films and sheets
SIST EN IEC 60674-3-4:2022 en

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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SIST EN IEC 60674-3-4:2022
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SIST EN IEC 60674-3-4:2022
EUROPEAN STANDARD EN IEC 60674-3-4
NORME EUROPÉENNE
EUROPÄISCHE NORM August 2022
ICS 29.035.20 Supersedes EN 60674-3-4 to 6:1995
English Version
Plastic films for electrical purposes - Part 3: Specifications for
individual materials - Sheets 4: Polyimide films used for electrical
insulation
(IEC 60674-3-4:2022)

Films plastiques à usages électriques - Partie 3: Isolierfolien für elektrotechnische Zwecke - Teil 3:

Spécifications pour matériaux particuliers - Feuille 4: Films Bestimmungen für einzelne Materialien - Blatt 4: Polyimid-

de polyimide utilisés dans l'isolation électrique Folien zur elektrischen Isolierung

(IEC 60674-3-4:2022) (IEC 60674-3-4:2022)

This European Standard was approved by CENELEC on 2022-07-27. CENELEC members are bound to comply with the CEN/CENELEC

Internal Regulations which stipulate the conditions for giving this European Standard the status of a national standard without any alteration.

Up-to-date lists and bibliographical references concerning such national standards may be obtained on application to the CEN-CENELEC

Management Centre or to any CENELEC member.

This European Standard exists in three official versions (English, French, German). A version in any other language made by translation

under the responsibility of a CENELEC member into its own language and notified to the CEN-CENELEC Management Centre has the

same status as the official versions.

CENELEC members are the national electrotechnical committees of Austria, Belgium, Bulgaria, Croatia, Cyprus, the Czech Republic,

Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, the

Netherlands, Norway, Poland, Portugal, Republic of North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland,

Türkiye and the United Kingdom.
European Committee for Electrotechnical Standardization
Comité Européen de Normalisation Electrotechnique
Europäisches Komitee für Elektrotechnische Normung
CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels

© 2022 CENELEC All rights of exploitation in any form and by any means reserved worldwide for CENELEC Members.

Ref. No. EN IEC 60674-3-4:2022 E
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SIST EN IEC 60674-3-4:2022
EN IEC 60674-3-4:2022 (E)
European foreword

The text of document 15/956/CDV, future edition 2 of IEC 60674-3-4, prepared by IEC/TC 15 "Solid

electrical insulating materials" was submitted to the IEC-CENELEC parallel vote and approved by

CENELEC as EN IEC 60674-3-4:2022.
The following dates are fixed:

• latest date by which the document has to be implemented at national (dop) 2023-04-27

level by publication of an identical national standard or by endorsement

• latest date by which the national standards conflicting with the (dow) 2025-07-27

document have to be withdrawn

This document supersedes EN 60674-3-4 to 6:1995 and all of its amendments and corrigenda (if any).

Attention is drawn to the possibility that some of the elements of this document may be the subject of

patent rights. CENELEC shall not be held responsible for identifying any or all such patent rights.

Any feedback and questions on this document should be directed to the users’ national committee. A

complete listing of these bodies can be found on the CENELEC website.
Endorsement notice

The text of the International Standard IEC 60674-3-4:2022 was approved by CENELEC as a

European Standard without any modification.

In the official version, for Bibliography, the following notes have to be added for the standards

indicated:
IEC 60674-3 (series) NOTE Harmonized as EN 60674-3 (series)
ISO 1183-2:2019 NOTE Harmonized as EN ISO 1183-2:2019 (not modified)
ISO 11357-3:2018 NOTE Harmonized as EN ISO 11357-3:2018 (not modified)
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SIST EN IEC 60674-3-4:2022
EN IEC 60674-3-4:2022 (E)
Annex ZA
(normative)
Normative references to international publications
with their corresponding European publications

The following documents are referred to in the text in such a way that some or all of their content

constitutes requirements of this document. For dated references, only the edition cited applies. For

undated references, the latest edition of the referenced document (including any amendments)

applies.

NOTE 1 Where an International Publication has been modified by common modifications, indicated by (mod),

the relevant EN/HD applies.

NOTE 2 Up-to-date information on the latest versions of the European Standards listed in this annex is available

here: www.cenelec.eu.
Publication Year Title EN/HD Year
IEC 60674-1 1980 Specification for plastic films for electrical EN 60674-1 1998
purposes. Part 1: Definitions and general
requirements
IEC 60674-2 2016 Specification for plastic films for electrical EN 60674-2 2017
purposes - Part 2: Methods of test
IEC 60757 - Code for designation of colours EN IEC 60757 -
ISO 9773 - Plastics - Determination of burning behaviour EN ISO 9773 -
of thin flexible vertical specimens in contact
with a small-flame ignition source
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SIST EN IEC 60674-3-4:2022
---------------------- Page: 6 ----------------------
SIST EN IEC 60674-3-4:2022
IEC 60674-3-4
Edition 2.0 2022-06
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Plastic films for electrical purposes –
Part 3: Specifications for individual materials – Sheet 4: Polyimide films used
for electrical insulation
Films plastiques à usages électriques –
Partie 3: Spécifications pour matériaux particuliers – Feuille 4: Films de
polyimide utilisés dans l'isolation électrique
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
INTERNATIONALE
ICS 29.035.20 ISBN 978-2-8322-3921-6

Warning! Make sure that you obtained this publication from an authorized distributor.

Attention! Veuillez vous assurer que vous avez obtenu cette publication via un distributeur agréé.

® Registered trademark of the International Electrotechnical Commission
Marque déposée de la Commission Electrotechnique Internationale
---------------------- Page: 7 ----------------------
SIST EN IEC 60674-3-4:2022
– 2 – IEC 60674-3-4:2022 © IEC 2022
CONTENTS

FOREWORD ........................................................................................................................... 3

INTRODUCTION ..................................................................................................................... 5

1 Scope .............................................................................................................................. 6

2 Normative references ...................................................................................................... 6

3 Terms and definitions ...................................................................................................... 6

4 Classification ................................................................................................................... 7

5 Designation ..................................................................................................................... 7

6 General requirements ...................................................................................................... 7

7 Dimensions...................................................................................................................... 8

7.1 Thickness ............................................................................................................... 8

7.2 Width ...................................................................................................................... 8

8 Properties ........................................................................................................................ 8

8.1 Properties not dependent on thickness ................................................................... 8

8.2 Properties dependent on thickness ......................................................................... 9

9 Other properties ............................................................................................................ 10

9.1 Thermal endurance ............................................................................................... 10

9.2 Burning characteristics.......................................................................................... 11

10 Roll characteristics ........................................................................................................ 11

10.1 Roll diameter/film length ....................................................................................... 11

10.2 Windability/sag ..................................................................................................... 11

10.3 Joins ..................................................................................................................... 12

10.4 Difference between the film width and the roll width .............................................. 13

10.5 Cores .................................................................................................................... 13

Bibliography .......................................................................................................................... 14

Table 1 – Tolerance on the width ............................................................................................ 8

Table 2 – Properties not dependent on thickness .................................................................... 9

Table 3 – Properties dependent on thickness ........................................................................ 10

Table 4 – Thermal endurance ............................................................................................... 11

Table 5 – Windability/sag ...................................................................................................... 11

Table 6 – Maximum permissible number of joins per roll ....................................................... 12

Table 7 – Minimum permissible distance between splices or between any splice and

the end of the roll (m) ........................................................................................................... 13

Table 8 – Difference between the film width and the roll width .............................................. 13

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SIST EN IEC 60674-3-4:2022
IEC 60674-3-4:2022 © IEC 2022 – 3 –
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
PLASTIC FILMS FOR ELECTRICAL PURPOSES –
Part 3: Specifications for individual materials –
Sheet 4: Polyimide films used for electrical insulation
FOREWORD

1) The International Electrotechnical Commission (IEC) is a worldwide organization for standardization comprising

all national electrotechnical committees (IEC National Committees). The object of IEC is to promote international

co-operation on all questions concerning standardization in the electrical and electronic fields. To this end and

in addition to other activities, IEC publishes International Standards, Technical Specifications, Technical Reports,

Publicly Available Specifications (PAS) and Guides (hereafter referred to as “IEC Publication(s)”). Their

preparation is entrusted to technical committees; any IEC National Committee interested in the subject dealt with

may participate in this preparatory work. International, governmental and non-governmental organizations liaising

with the IEC also participate in this preparation. IEC collaborates closely with the International Organization for

Standardization (ISO) in accordance with conditions determined by agreement between the two organizations.

2) The formal decisions or agreements of IEC on technical matters express, as nearly as possible, an international

consensus of opinion on the relevant subjects since each technical committee has representation from all

interested IEC National Committees.

3) IEC Publications have the form of recommendations for international use and are accepted by IEC National

Committees in that sense. While all reasonable efforts are made to ensure that the technical content of IEC

Publications is accurate, IEC cannot be held responsible for the way in which they are used or for any

misinterpretation by any end user.

4) In order to promote international uniformity, IEC National Committees undertake to apply IEC Publications

transparently to the maximum extent possible in their national and regional publications. Any divergence between

any IEC Publication and the corresponding national or regional publication shall be clearly indicated in the latter.

5) IEC itself does not provide any attestation of conformity. Independent certification bodies provide conformity

assessment services and, in some areas, access to IEC marks of conformity. IEC is not responsible for any

services carried out by independent certification bodies.

6) All users should ensure that they have the latest edition of this publication.

7) No liability shall attach to IEC or its directors, employees, servants or agents including individual experts and

members of its technical committees and IEC National Committees for any personal injury, property damage or

other damage of any nature whatsoever, whether direct or indirect, or for costs (including legal fees) and

expenses arising out of the publication, use of, or reliance upon, this IEC Publication or any other IEC

Publications.

8) Attention is drawn to the Normative references cited in this publication. Use of the referenced publications is

indispensable for the correct application of this publication.

9) Attention is drawn to the possibility that some of the elements of this IEC Publication may be the subject of patent

rights. IEC shall not be held responsible for identifying any or all such patent rights.

IEC 60674-3-4 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 1993. This edition

constitutes a technical revision.
This edition includes
...

SLOVENSKI STANDARD
oSIST prEN IEC 60674-3-4:2022
01-februar-2022

Plastične folije za električne namene - 3. del: Specifikacije za posamezne materiale

- 4. list: Poliimidne folije, ki se uporabljajo za električno izolacijo

Plastic films for electrical purposes - Part 3: Specifications for individual materials -

Sheets 4: Polyimide films used for electrical insulation
Films plastiques à usages électriques - Partie 3: Spécifications pour matériaux

particuliers - Feuille 4: Films de polyimide utilisés dans l'isolation électrique

Ta slovenski standard je istoveten z: prEN IEC 60674-3-4:2021
ICS:
29.035.20 Plastični in gumeni izolacijski Plastics and rubber insulating
materiali materials
83.140.10 Filmi in folije Films and sheets
oSIST prEN IEC 60674-3-4:2022 en

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

---------------------- Page: 1 ----------------------
oSIST prEN IEC 60674-3-4:2022
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oSIST prEN IEC 60674-3-4:2022
15/956/CDV
COMMITTEE DRAFT FOR VOTE (CDV)
PROJECT NUMBER:
IEC 60674-3-4 ED2
DATE OF CIRCULATION: CLOSING DATE FOR VOTING:
2021-12-17 2022-03-11
SUPERSEDES DOCUMENTS:
15/922/CD, 15/930A/CC
IEC TC 15 : SOLID ELECTRICAL INSULATING MATERIALS
SECRETARIAT: SECRETARY:
United States of America Mr John Gauthier
OF INTEREST TO THE FOLLOWING COMMITTEES: PROPOSED HORIZONTAL STANDARD:
TC 112
Other TC/SCs are requested to indicate their interest, if
any, in this CDV to the secretary.
FUNCTIONS CONCERNED:
EMC ENVIRONMENT QUALITY ASSURANCE SAFETY

SUBMITTED FOR CENELEC PARALLEL VOTING NOT SUBMITTED FOR CENELEC PARALLEL VOTING

Attention IEC-CENELEC parallel voting
The attention of IEC National Committees, members of
CENELEC, is drawn to the fact that this Committee Draft
for Vote (CDV) is submitted for parallel voting.
The CENELEC members are invited to vote through the
CENELEC online voting system.

This document is still under study and subject to change. It should not be used for reference purposes.

Recipients of this document are invited to submit, with their comments, notification of any relevant patent rights of

which they are aware and to provide supporting documentation.
TITLE:

Plastic films for electrical purposes - Part 3: Specifications for individual materials - Sheets 4:

Polyimide films used for electrical insulation
PROPOSED STABILITY DATE: 2027
NOTE FROM TC/SC OFFICERS:

Copyright © 2021 International Electrotechnical Commission, IEC. All rights reserved. It is permitted to download this

electronic file, to make a copy and to print out the content for the sole purpose of preparing National Committee positions.

You may not copy or "mirror" the file or printed version of the document, or any part of it, for any other purpose without

permission in writing from IEC.
---------------------- Page: 3 ----------------------
oSIST prEN IEC 60674-3-4:2022
IEC CDV 60674-3-4/Ed2  IEC:2021 – 2 – 15/956/CDV
1 CONTENTS

3 FOREWORD ........................................................................................................................... 3

4 INTRODUCTION ..................................................................................................................... 5

5 1 Scope .............................................................................................................................. 6

6 2 Normative references ...................................................................................................... 6

7 3 Terms and definitions ...................................................................................................... 6

8 4 Classification ................................................................................................................... 6

9 5 Designation ..................................................................................................................... 7

10 6 General requirements ...................................................................................................... 7

11 7 Dimensions ..................................................................................................................... 7

12 7.1 Thickness ............................................................................................................... 7

13 8 Width ............................................................................................................................... 8

14 9 Properties ........................................................................................................................ 8

15 10 Properties not dependent on thickness ............................................................................ 8

16 11 Properties dependent on thickness .................................................................................. 9

17 12 Other properties ............................................................................................................ 10

18 12.1 Thermal endurance ............................................................................................... 10

19 12.2 Burning characteristics ......................................................................................... 11

20 13 Roll characteristics ........................................................................................................ 11

21 14 Roll diameter/film length ................................................................................................ 11

22 15 Windability/sag .............................................................................................................. 11

23 16 Joins ............................................................................................................................. 12

24 17 Difference between the film width and the roll width....................................................... 13

25 18 Cores ............................................................................................................................ 13

26 Bibliography .......................................................................................................................... 14

28 Table 1 – Tolerance on the width ............................................................................................ 8

29 Table 2 – Properties not dependent on thickness .................................................................... 9

30 Table 3 – Properties dependent on thickness ........................................................................ 10

31 Table 4 – Thermal endurance ............................................................................................... 11

32 Table 5 – Windability/sag ...................................................................................................... 11

33 Table 6 – Maximum permissible number of joins per roll ....................................................... 12

34 Table 7 – Minimum permissible distance between splices or between any splice and

35 the end of the roll (m) ........................................................................................................... 13

36 Table 8 – Difference between the film width and the roll width .............................................. 13

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oSIST prEN IEC 60674-3-4:2022
IEC CDV 60674-3-4/Ed2  IEC:2021 – 3 – 15/956/CDV
40 INTERNATIONAL ELECTROTECHNICAL COMMISSION
41 ____________
43 PLASTIC FILMS FOR ELECTRICAL PURPOSES –
45 Part 3: Specification for individual materials
46 Sheet 4: Polyimide films used for electrical insulation
49 FOREWORD

50 1) The International Electrotechnical Commission (IEC) is a worldwide organization for standardization comprising

51 all national electrotechnical committees (IEC National Committees). The object of IEC is to promote international

52 co-operation on all questions concerning standardization in the electrical and electronic fields. To this end and

53 in addition to other activities, IEC publishes International Standards, Technical Specifications, Technical Reports,

54 Publicly Available Specifications (PAS) and Guides (hereafter referred to as “IEC Publication(s)”). Their

55 preparation is entrusted to technical committees; any IEC National Committee interested in the subject dealt with

56 may participate in this preparatory work. International, governmental and non-governmental organizations liaising

57 with the IEC also participate in this preparation. IEC collaborates closely with the International Organization for

58 Standardization (ISO) in accordance with conditions determined by agreement between the two organizations.

59 2) The formal decisions or agreements of IEC on technical matters express, as nearly as possible, an international

60 consensus of opinion on the relevant subjects since each technical committee has representation from all

61 interested IEC National Committees.

62 3) IEC Publications have the form of recommendations for international use and are accepted by IEC National

63 Committees in that sense. While all reasonable efforts are made to ensure that the technical content of IEC

64 Publications is accurate, IEC cannot be held responsible for the way in which they are used or for any

65 misinterpretation by any end user.

66 4) In order to promote international uniformity, IEC National Committees undertake to apply IEC Publications

67 transparently to the maximum extent possible in their national and regional publications. Any divergence between

68 any IEC Publication and the corresponding national or regional publication shall be clearly indicated in the latter.

69 5) IEC itself does not provide any attestation of conformity. Independent certification bodies provide conformity

70 assessment services and, in some areas, access to IEC marks of conformity. IEC is not responsible for any

71 services carried out by independent certification bodies.

72 6) All users should ensure that they have the latest edition of this publication.

73 7) No liability shall attach to IEC or its directors, employees, servants or agents including individual experts and

74 members of its technical committees and IEC National Committees for any personal injury, property damage or

75 other damage of any nature whatsoever, whether direct or indirect, or for costs (including legal fees) and

76 expenses arising out of the publication, use of, or reliance upon, this IEC Publication or any other IEC Publications.

77 8) Attention is drawn to the Normative references cited in this publication. Use of the referenced publications is

78 indispensable for the correct application of this publication.

79 9) Attention is drawn to the possibility that some of the elements of this IEC Publication may be the subject of patent

80 rights. IEC shall not be held responsible for identifying any or all such patent rights.

81 International Standard IEC 60674-3-4 has been prepared by IEC technical committee 15: Solid

82 electrical insulating materials.

83 This Second edition cancels and replaces the first edition published in 1993. This edition

84 constitutes a technical revision.

85 This edition includes the following significant technical changes with respect to the previous

86 edition:

87 a) this document has been completely revised editorially and technically and included in the

88 IEC 60674 series of standards;
89 b) new types have been included;
90 c) the ranges of thickness have been expanded;
91 d) changes have been made to the requirements of some existing types;
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oSIST prEN IEC 60674-3-4:2022
IEC CDV 60674-3-4/Ed2  IEC:2021 – 4 – 15/956/CDV
93 The text of this International Standard is based on the following documents:
FDIS Report on voting
XX/XX/FDIS XX/XX/RVD

95 Full information on the voting for the approval of this International Standard can be found in the

96 report on voting indicated in the above table.

97 This document has been drafted in accordance with the ISO/IEC Directives, Part 2.

98 The committee has decided that the contents of this document will remain unchanged until the

99 stability date indicated on the IEC website under "http://webstore.iec.ch" in the data related to

100 the specific document. At this date, the document will be
101 • reconfirmed,
102 • withdrawn,
103 • replaced by a revised edition, or
104 • amended.
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oSIST prEN IEC 60674-3-4:2022
IEC CDV 60674-3-4/Ed2  IEC:2021 – 5 – 15/956/CDV
105 INTRODUCTION

106 This standard is one of a series which deals with plastic films for electrical purposes. The series

107 will consist of three parts:
108 Part 1: Definitions and general requirements (IEC 60674-1);
109 Part 2: Methods of test (IEC 60674-2);
110 This standard contains one of the sheets comprising part 3, as follows:
111 Sheet 4: Polyimide films used for electrical insulation
112
113
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oSIST prEN IEC 60674-3-4:2022
IEC CDV 60674-3-4/Ed2  IEC:2021 – 6 – 15/956/CDV
114 PLASTIC FILMS FOR ELECTRICAL PURPOSES –
115
116 Part 3: Specification for individual materials
117 Sheet 4: Polyimide films used for electrical insulation
118
119
120 1 Scope

121 This International Standard gives the requirements for polyimide films used for electrical

122 purposes.

123 Materials which conform to this specification meet established levels of performance. However,

124 the selection of a material by a user for a specific application shou
...