IEC 60893-3-7:2003+AMD1:2009 CSV

Insulating materials - Industrial rigid laminated sheets based on thermosetting resins for electrical purposes - Part 3-7: Specifications for individual materials - Requirements for rigid laminated sheets based on polyimide resins

IEC 60893-3-7:2003+A1:2009 Gives the requirements for industrial rigid laminated sheets for electrical purposes based on polyimide resins and different reinforcements. Applications and distinguishing properties are given. 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. In this revision of the IEC 60893 series of specifications, new material types have been included, changes have been made to the property requirements of some existing types, a new method for testing permittivity and dissipation factor has been added, and all non-specification data for each type has been moved to a new Part 4 document - IEC 60893-4; Typical values. This consolidated version consists of the second edition (2003) and its amendment 1 (2009). Therefore, no need to order amendment in addition to this publication.

Matériaux isolants - Stratifiés industriels rigides en planches à base de résines thermodurcissables à usages électriques - Partie 3-7: Spécifications pour matériaux particuliers - Prescriptions pour stratifiés rigides en planches à base de résine polyimide

La CEI 60893-3-7:2003+A1:2009 Donne les prescriptions pour les stratifiés industriels rigides en planches à usages électriques, à base de résine polyimide et de différents renforts. Leurs applications et propriétés distinctives sont indiquées. Les matériaux conformes à la présente spécification satisfont aux niveaux de performances établis. Cependant, il convient que le choix d'un matériau, par un utilisateur, pour une application spécifique, soit fondé sur les prescriptions réelles nécessaires pour obtenir les performances satisfaisantes pour cette application, et qu'il ne soit pas fondé sur cette seule spécification. Dans cette révision de la série de spécifications CEI 60893, de nouveaux matériaux ont été introduits, des modifications ont été faites aux prescriptions pour les propriétés de certains types existants, une nouvelle méthode pour l'essai de la permittivité et du facteur de dissipation a été ajoutée et, pour chaque type, les valeurs n'étant pas des spécifications ont été déplacées dans un nouveau document de Partie 4 - CEI 60893-4: Valeurs typiques.  Cette version consolidée comprend la deuxième édition (2003) et son amendement 1 (2009). Il n'est donc pas nécessaire de commander l'amendement avec cette publication.

General Information

• Status: Published
• Publication Date: 09-Nov-2009
• ICS: 01 - GENERALITIES. TERMINOLOGY. STANDARDIZATION. DOCUMENTATION
• ICS: 29.035.01 - Insulating materials in general
• Technical Committee: TC 15 - Solid electrical insulating materials
• Current Stage: PPUB - Publication issued
• Start Date: 10-Nov-2009
• Completion Date: 10-Nov-2009

Standards Content (Sample)

IEC 60893-3-7
®
Edition 2.1 2009-11
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Insulating materials – Industrial rigid laminated sheets based on thermosetting
resins for electrical purposes –
Part 3-7: Specifications for individual materials – Requirements for rigid
laminated sheets based on polyimide resins

Matériaux isolants – Stratifiés industriels rigides en planches à base de résines
thermodurcissables à usages électriques –
Partie 3-7: Spécifications pour matériaux particuliers – Prescriptions pour
stratifiés rigides en planches à base de résine polyimide

IEC 60893-3-7:2003+A1:2009

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IEC 60893-3-7
®
Edition 2.1 2009-11
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Insulating materials – Industrial rigid laminated sheets based on thermosetting
resins for electrical purposes –
Part 3-7: Specifications for individual materials – Requirements for rigid
laminated sheets based on polyimide resins

Matériaux isolants – Stratifiés industriels rigides en planches à base de résines
thermodurcissables à usages électriques –
Partie 3-7: Spécifications pour matériaux particuliers – Prescriptions pour
stratifiés rigides en planches à base de résine polyimide
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
PRICE CODE
INTERNATIONALE
CD
CODE PRIX
ICS 29.035.01 ISBN 978-2-88910-322-5
® Registered trademark of the International Electrotechnical Commission
Marque déposée de la Commission Electrotechnique Internationale

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– 2 – 60893-3-7 © IEC:2003+A1:2009
CONTENTS
FOREWORD.3
INTRODUCTION.5
INTRODUCTION (to amendment 1).5
1 Scope.6
2 Normative references.6
3 Designation .6
4 Requirements .7

Bibliography .12

Table 1 − Type of industrial rigid laminated sheets based on polyimide resins.7
Table 2 − Tolerances on thickness (Test method: see 4.1 of IEC 60893-2) .8
Table 3 − Flatness (Test method: see 4.2 of IEC 60893-2).8
Table 4 − Tolerances on width of cut strips (minus tolerances only) .9
Table 5 − Property requirements .10
Table 6 − Electric strength at 90 °C in oil, perpendicular to laminations (1 min proof test
or 20 s step-by-step test) (kV/mm) .11

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60893-3-7 © IEC:2003+A1:2009 – 3 –
INTERNATIONAL ELECTROTECHNICAL COMMISSION
__________

INSULATING MATERIALS –
INDUSTRIAL RIGID LAMINATED SHEETS
BASED ON THERMOSETTING RESINS FOR ELECTRICAL PURPOSES –

Part 3-7: Specifications for individual materials −
Requirements for rigid laminated sheets based on polyimide resins



FOREWORD
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patent rights. IEC shall not be held responsible for identifying any or all such patent rights.
International Standard IEC 60893-3-7 has been prepared by subcommittee 15C: Specifications,
of IEC technical committee 15: Insulating materials.
This consolidated version of IEC 60893-3-7 consists of the second edition (2003) [documents
15C/1527/FDIS and 15C/1541/RVD] and its amendment 1 (2009) [documents 15/493/CDV and
15/533/RVC].
The technical content is therefore identical to the base edition and its amendment and has
been prepared for user convenience.
It bears the edition number 2.1.

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– 4 – 60893-3-7 © IEC:2003+A1:2009
A vertical line in the margin shows where the base publication has been modified by
amendment 1.
In this revision of the IEC 60893 series of specifications, new material types have been
included, changes have been made to the property requirements of some existing types, a new
method for testing permittivity and dissipation factor has been added, and all non-specification
data for each type has been moved to a new Part 4 document – IEC 60893-4; Typical values.
This publication has been drafted in accordance with the ISO/IEC Directives, Part 2.
The committee has decided that the contents of the base publication and its amendments will
remain unchanged until the maintenance result date indicated on the IEC web site under
"http://webstore.iec.ch" in the data related to the specific publication. At this date,
the publication will be
• reconfirmed,
• withdrawn,
• replaced by a revised edition, or
• amended.

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60893-3-7 © IEC:2003+A1:2009 – 5 –
INTRODUCTION
This part of IEC 60893 is one of a series which deals with industrial rigid laminated sheets
based on thermosetting resins for electrical purposes.
This series consists of four parts:
– Part 1: Definitions, designations and general requirements. (IEC 60893-1)
– Part 2: Methods of test (IEC 60893-2)
– Part 3: Specifications for individual materials (IEC 60893-3)
– Part 4: Typical values (IEC 60893-4)
IEC 60893-3-7 contains one of the specification sheets comprising Part 3, as follows:
Sheet 7: Requirements for rigid laminated sheets based on polyimide resins


INTRODUCTION
(to amendment 1)
This amendment introduces revised limits for CHARPY and IZOD impact strengths for the
requirements of all types of rigid laminated sheets based on polyimide resins. These revised
limits are based on the results of round-robin testing.

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– 6 – 60893-3-7 © IEC:2003+A1:2009
INSULATING MATERIALS –
INDUSTRIAL RIGID LAMINATED SHEETS
BASED ON THERMOSETTING RESINS FOR ELECTRICAL PURPOSES –

Part 3-7: Specifications for individual materials −
Requirements for rigid laminated sheets based on polyimide resins



1 Scope
This part of IEC 60893 gives the requirements for industrial rigid laminated sheets for electrical
purposes based on polyimide resins and different reinforcements.
Applications and distinguishing properties are given in Table 1.
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.
2 Normative references
The following referenced documents are indispensable for the application 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.
IEC 60893-1, Insulating materials – Industrial rigid laminated sheets based on thermosetting
resins for electrical purposes – Part 1: Definitions, designations and general requirements
IEC 60893-2:2003, Industrial rigid laminated sheets based on thermosetting resins for electrical
purposes – Part 2: Methods of test
3 Designation
The sheets covered by this specification are classified into types, which differ in the
reinforcement employed and in their distinguishing properties. The sheets are designated by
– the IEC standard number;
– a two-letter abbreviation, denoting the resin;
– a second two-letter abbreviation denoting the reinforcement;
– a serial number;
– nominal thickness x width x length in mm.

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60893-3-7 © IEC:2003+A1:2009 – 7 –
Example of designation: Industrial rigid laminated sheet of type PI GC 301 with a nominal
thickness of 10 mm, 500 mm wide, 1 000 mm long.
Sheet IEC 60893-3-7 – PI GC 301 – 10 x 500 x 1 000
The following abbreviations are used in this Part 3 sheet:
Type of resin Type of reinforcement
Pl Polyimide GC Woven glass cloth
4 Requirements
In addition to the general requirements given in IEC 60893-1, the laminated sheets shall also
comply with the dimensional requirements given in Tables 2, 3 and 4 and with the other
requirements given in Tables 5, 6 and 7.
Table 1 − Type of industrial rigid laminated sheets
based on polyimide resins
a
Type designation Applications and distinguishing characteristics
Electrical and mechanical applications. Very good mechanical and
PI GC 301
electrical properties at high temperature
a
It should not be inferred from the contents of Table 1 that laminates of any particular type
are necessarily unsuitable for applications other than those listed for them, or that specific
laminates will be suitable for all applications within the wide description given.

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– 8 – 60893-3-7 © IEC:2003+A1:2009
Table 2 − Tolerances on thickness
(Test method: see 4.1 of IEC 60893-2)
Where the nominal thickness is not one of the preferred thicknesses listed, then the tolerance
for the next highest preferred nominal thickness shall apply.
Nominal thickness Tolerance
mm ±mm

0,8 0,16
1,0 0,18
1,2 0,21

1,5 0,24
2,0 0,28
2,5 0,33

3,0 0,37
4,0 0,45
5,0 0,52

6,0 0,60
8,0 0,72
10,0 0,82


12,0 0,94
14,0 1,02
16,0 1,12

20,0 1,30
25,0 1,50
30,0 1,70

NOTE Other tolerances may be agreed between the supplier
and the purchaser.

Table 3 − Flatness
(Test method: see 4.2 of IEC 60893-2)
Thickness Length of straight edge
d mm
mm 1 000 500
10 2,5
3 < d ≤ 6
8 2,0
6 < d ≤ 8
8 < d 6 1,5

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60893-3-7 © IEC:2003+A1:2009 – 9 –
Table 4 − Tolerances on width of cut strips
(minus tolerances only)
Nominal Nominal width, all types
mm
thickness
d
3< b ≤50 50< b ≤100 100< b ≤160 160< b ≤300 300< b ≤500 500< b ≤600
mm
0,8 0,5 0,5 0,5 0,6 1,0 1,0
1,0 0,5 0,5 0,5 0,6 1,0 1,0
1,2 0,5 0,5 0,5 1,0 1,2 1,2
1,5 0,5 0,5 0,5 1,0 1,2 1,2
2,0 0,5 0,5 0,5 1,0 1,2 1,5
2,5 0,5 1,0 1,0 1,5 2,0 2,5
3,0 0,5 1,0 1,0 1,5 2,0 2,5
4,0 0,5 2,0 2,0 3,0 4,0 5,0
5,0 0,5 2,0 2,0 3,0 4,0 5,0
NOTE Unilateral, all-negative tolerances are normally applied to the width of cut strips, and are given in the
above table. Other tolerances may be agreed upon between purchaser and supplier.

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Table 5 − Property requirements
Nominal Type
Test
thickness of
method
sheet to which
Minimum
in
Property Unit Remarks
test is
or Maximum
IEC 60893-2
PI GC 301
applicable
Subclause
mm
400 Measured at 23 °C ± 2 K
Flexural strength 5.1 MPa Minimum ≥1,5
300 Measured at 200 °C ± 5 K after 1 h at 200 °C ± 5 K
5.4.2
Conformance with the requirements for either the Charpy or
Charpy impact strength or Izod impact 2
kJ/m Minimum 45 Izod test constitutes, in this respect, conformance with this
or ≥5
strength parallel to laminations
specification.
5.4.3
Electric strength at 90 °C in oil
6.1 kV/mm Minimum ≤3 See Table 6
perpendicular to laminations
Breakdown voltage at 90 °C in oil
6.1 kV Minimum >3 40
parallel to laminations
Insulation resistance after 6.3
Minimum All 100
MΩ
immersion in water
The small-scale laboratory test used in this standard for
assigning a flammability category is primarily for monitoring
consistency of production of laminates. The results so obtained
Flammability 7.2 Category 3 HB
should not in any circumstances be considered as an overall
indication of the potential fire hazards presented by these
laminates under actual conditions of use.
Water absorption 8.2 mg Maximum All See Table 7

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60893-3-7 © IEC:2003+A1:2009           – 11 –

Table 6 − Electric strength at 90 °C in oil, perpendicular to laminations
a

(1 min proof test or 20 s step-by-step test) (kV/mm)
b
Mean measured thickness of test specimen
Type
mm
0,8 0,9 1,0 1,2 1,5 1,8 2,0 2,2 2,4 2,5 2,6 2,8 3,0
PI GC 301
15,0 14,6 14,0 13,2 12,0 11,6 11,2 10,8 10,5 10,4 10,2 10,1 10,0
a
The two tests are alternatives. A material meeting either requirement shall be deemed to comply with the specification with respect to
electric strength at 90 °C in oil, perpendicular to laminations.
b
If the arithmetic mean of the measured values of thickness of the test specimen lies between two values of thickness shown in the above
table, the limit shall be obtained by interpolation. If the arithmetic mean of the measured values of thickness is below the minimum
thickness for which a limit is given, the electric strength limit appropriate to the minimum thickness shall apply. If the
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