IEC 60626-3:2008
(Main)Combined flexible materials for electrical insulation - Part 3: Specifications for individual materials
Combined flexible materials for electrical insulation - Part 3: Specifications for individual materials
IEC 60626-3:2008 gives dimensional and performance requirements for individual combined flexible materials for electrical insulation. This part is in the form of groups of sheets. This standard contains 31 sheets of Part 3, as follows: 100, 101, 102, 110, 111, 112, 113, 114, 115, 302, 303, 312, 313, 315, 320, 330, 340, 350, 351, 360, 400, 401, 402, 403, 410, 411, 420, 421, 502, 503, 505. The main change from the previous edition is the consolidation of amendment 1 published in 1999 which was mainly describing the sheets from 340 to 459.
Matériaux combinés souples destinés à l'isolement électrique - Partie 3: Spécifications pour matériaux particuliers
la CEI 60626-3:2008 spécifie les exigences relatives aux dimensions et aux performances des matériaux combinés souples individuels destinés à l'isolement électrique. Cette partie se présente sous la forme de groupes de feuilles. La présente norme comprend 31 feuilles constituant la Partie 3, comme suit: 100, 101, 102, 110, 111, 112, 113, 114, 115, 302, 303, 312, 313, 315, 320, 330, 340, 350, 351, 360, 400, 401, 402, 403, 410, 411, 420, 421, 502, 503, 505. Le principale modification par rapport à l'édition précédente est le suivant: consolidation de l'amendement 1 publié en 1999, qui décrivait principalement les feuilles 340 à 459.
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Standards Content (Sample)
IEC 60626-3
Edition 3.0 2008-07
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Combined flexible materials for electrical insulation –
Part 3: Specifications for individual materials
Matériaux combinés souples destinés à l'isolement électrique –
Partie 3: Spécifications pour matériaux particuliers
IEC 60626-3:2008
---------------------- Page: 1 ----------------------
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IEC 60626-3
Edition 3.0 2008-07
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Combined flexible materials for electrical insulation –
Part 3: Specifications for individual materials
Matériaux combinés souples destinés à l'isolement électrique –
Partie 3: Spécifications pour matériaux particuliers
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
PRICE CODE
INTERNATIONALE
XB
CODE PRIX
ICS 29.035.01 ISBN 2-8318-9896-X
® Registered trademark of the International Electrotechnical Commission
Marque déposée de la Commission Electrotechnique Internationale
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– 2 – 60626-3 © IEC:2008
CONTENTS
FOREWORD.4
INTRODUCTION.6
1 Scope.7
2 Normative references.7
3 Requirements .8
4 Designation .8
5 Thermal classification .8
6 Specification sheets.8
Sheet 100 Requirements for combined flexible duplex materials of two layers –
F-ET/P-C (23 μm PET film with presspaper or paper) .10
Sheet 101 Requirements for combined flexible duplex materials of two layers –
F-ET/P-C (36 μm PET film with presspaper or paper) .12
Sheet 102 Requirements for combined flexible duplex materials of two layers –
F-PET/P-C (50 μm PET film with presspaper or paper) .14
Sheet 110 Requirements for combined flexible triplex materials of three layers –
P-C/F-PET/P-C (23 μm PET film with presspaper or paper) .16
Sheet 111 Requirements for combined flexible triplex materials of three layers –
18
P-C/F-PET/P-C (36 μm PET film with presspaper or paper) .
Sheet 112 Requirements for combined flexible triplex materials of three layers –
P-C/F-PET/P-C (50 μm PET film with presspaper or paper) .20
Sheet 113 Requirements for combined flexible triplex materials of three layers –
P-C/F-PET/P-C (75 μm PET film with presspaper or paper) .22
Sheet 114 Requirements for combined flexible triplex materials of three layers –
P-C/F-PET/P-C (100 μm PET film with presspaper or paper) .24
Sheet 115 Requirements for combined flexible triplex materials of three layers –
P-C/F-PET/P-C (125 μm PET film with presspaper or paper) .26
Sheet 302 Requirements for combined flexible duplex materials of two layers –
P-PAa/F-PET (50 μm aramid calendered paper with PET film) .28
Sheet 303 Requirements for combined flexible duplex materials of two layers –
P-PAa/F-PET (80 μm aramid calendered paper with PET film) .30
Sheet 312 Requirements for combined flexible triplex materials of three layers –
P-PAa/F-PET/P-PAa (50 μm aramid calendered paper on both sides of PET film) .32
Sheet 313 Requirements for combined flexible triplex materials of three layers –
P-PAa/F-PET/P-PAa (80 μm aramid calendered paper on both sides of PET film) .34
Sheet 315 Requirements for combined flexible triplex materials of three layers –
P-PAa/F-PET/P-PAa (130 μm aramid calendered paper on both sides of PET film) .36
Sheet 320 Requirements for combined flexible triplex materials of three layers –
P-PAa/F-PET/P-PAa (130 μm aramid uncalendered paper on both sides of PET film) .38
Sheet 330 Requirements for combined flexible triplex materials of three layers –
P-PAa/F-PI/P-PAa (aramid calendered paper on both sides of PI film) .40
Sheet 340 Requirements for combined flexible duplex materials of two layers –
P-H/F-PET (hybrid inorganic-organic paper with PET film) .42
Sheet 350 Requirements for combined flexible triplex materials of three layers –
P-H/F-PET/P-H (75 μm hybrid inorganic-organic paper on both sides of PET film) .44
Sheet 351 Requirements for combined flexible triplex materials of three layers –
P-H/F-PET/P-H (125 μm hybrid inorganic-organic paper on both sides of PET film).46
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60626-3 © IEC:2008 – 3 –
Sheet 360 Requirements for combined flexible triplex materials of three layers –
P-H/P-FG type 1/P-H (hybrid inorganic-organic paper on both sides of type 1 filled
glass paper).48
Sheet 400 Requirements for combined flexible duplex materials of two layers –
P-FG type 1/F-PET (type 1 filled glass paper with 25 μm PET film) .50
Sheet 401 Requirements for combined flexible duplex materials of two layers –
P-FG type 1/F-PET (type 1 filled glass paper with 50 μm PET film) .52
Sheet 402 Requirements for combined flexible duplex materials of two layers –
P-FG type 1/F-PET (type 1 filled glass paper with 75 μm PET film) .54
Sheet 403 Requirements for combined flexible duplex materials of two layers –
P-FG type 2/F-PET (type 2 filled glass paper with PET film).56
Sheet 410 Requirements for combined flexible duplex materials of two layers –
P-FG type 1/C-G (type 1 filled glass paper with woven glass cloth) .58
Sheet 411 Requirements for combined flexible duplex materials of two layers –
P-FG type 2/C-G (type 2 filled glass paper with woven glass cloth) .60
Sheet 420 Requirements for combined flexible triplex materials of three layers –
P-FG type 1/F-PET/P-FG type 1 (type 1 filled glass paper on both sides of PET film) .62
Sheet 421 Requirements for combined flexible triplex materials of three layers –
64
P-FG type 2/F-PET/P-FG type 2 (type 2 filled glass paper on both sides of PET film) .
Sheet 502 Requirements for combined flexible triplex materials of three layers –
P-PET/F-PET/P-PET (50 μm PET mat on both sides of PET film) .66
Sheet 503 Requirements for combined flexible triplex materials of three layers –
P-PET/F-PET/P-PET (75 μm PET mat on both sides of PET film) .68
Sheet 505 Requirements for combined flexible triplex materials of three layers –
P-PET/F-PET/P-PET (125 μm PET mat on both sides of PET film) .70
Bibliography .72
9
Table 1 – Master listing for IEC 60626-3 sheet identification .
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INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
COMBINED FLEXIBLE MATERIALS
FOR ELECTRICAL INSULATION –
Part 3: Specifications for individual materials
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
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6) All users should ensure that they have the latest edition of this publication.
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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.
International Standard IEC 60626-3 has been prepared by IEC technical committee 15: Solid
electrical insulating materials.
This third edition cancels and replaces the second edition published in 1996 and its
amendment 1 (1999), and constitutes a technical revision. The main changes from the previous
edition are as follows:
– consolidation of amendment 1 published in 1999 which was mainly describing the sheets
from 340 to 459;
– revision and reordering of previous tables of 1996 edition.
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60626-3 © IEC:2008 – 5 –
The text of this standard is based on the following documents:
FDIS Report on voting
15/442/FDIS 15/465/RVD
Full information on the voting for the approval of this standard can be found in the report on
voting indicated in the above table.
This publication has been drafted in accordance with the ISO/IEC Directives, Part 2.
A list of all the parts in the IEC 60626 series, under the general title Combined flexible
materials for electrical insulation, can be found on the IEC website.
The committee has decided that the contents of this publication 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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– 6 – 60626-3 © IEC:2008
INTRODUCTION
This standard contains 31 sheets of Part 3, as follows:
100, 101, 102, 110, 111, 112, 113, 114, 115, 302, 303, 312, 313, 315, 320, 330, 340, 350, 351,
360, 400, 401, 402, 403, 410, 411, 420, 421, 502, 503, 505.
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60626-3 © IEC:2008 – 7 –
COMBINED FLEXIBLE MATERIALS
FOR ELECTRICAL INSULATION –
Part 3: Specifications for individual materials
1 Scope
This part of IEC 60626 specifies dimensional and performance requirements for individual
combined flexible materials for electrical insulation. This part is in the form of groups of sheets.
Sheets are numbered in accordance with Table 1, which provides a complete list of all the
specification sheets belonging to this standard.
Materials which conform to this specification meet established levels of performance. However,
the selection of 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.
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.
The list of normative references is extensive because, in order to obtain a combination of two
or more materials for electrical insulation, it is necessary that those base materials (paper, film,
etc.) shall conform to the requirements set forth, in the appropriate specification of the base
material alone, for that purpose. This rule shall be applied also in the development of new
possible combinations; to this end, specifications of materials not actually used, but
referenced, may be eligible for future developments.
IEC 60554-1:1977, Specification for cellulosic papers for electrical purposes – Part 1:
Definitions and general requirements
IEC 60554-3 (all parts), Specification for cellulosic papers for electrical purposes – Part 3:
Specifications for individual materials
IEC 60626-1:1995, Combined flexible materials for electrical insulation – Part 1: Definitions and
general requirements
IEC 60626-2:1995, Combined flexible materials for electrical insulation – Part 2: Methods
of test
IEC 60641-1:2008, Pressboard and presspaper for electrical purposes – Part 1: Definitions and
general requirements
IEC 60641-3-2:2008, Pressboard and presspaper for electrical purposes – Part 3:
Specifications for individual materials – Sheet 2: Requirements for presspaper types P.2.1,
P.4.1, P.4.2, P.4.3 and P.6.1
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– 8 – 60626-3 © IEC:2008
IEC 60674-1:1980, Specification for plastic films for electrical purposes – Part 1: Definitions
and general requirements
IEC 60674-3-2:1992, Specification for plastic films for electrical purposes – Part 3:
Specifications for individual materials – Sheet 2: Requirements for balanced biaxially oriented
polyethylene terephthalate (PET) films used for electrical insulation
IEC 60674-3-4:1993, Specification for plastic films for electrical purposes – Part 3:
Specifications for individual materials – Sheet 4: Requirements for polyimide films used for
electrical insulation
IEC 60819-1:1995, Non-cellulosic papers for electrical purposes – Part 1: Definitions and
general requirements
Amendment 1 (1996)
IEC 60819-3-1:2001, Non-cellulosic papers for electrical purposes – Part 3: Specifications for
individual materials – Sheet 1: Filled glass paper
IEC 60819-3-2:2001, Non-cellulosic papers for electrical purposes – Part 3: Specifications for
individual materials – Sheet 2: Hybrid inorganic- organic paper
IEC 60819-3-3:2006, Non-cellulosic papers for electrical purposes – Part 3: Specifications for
individual materials – Sheet 3: Unfilled aramid (aromatic polyamide) papers
3 Requirements
In addition to complying with the general requirements of IEC 60626-1, each flexible combined
laminate shall conform to the requirements set forth in the appropriate sheet corresponding to
its type, as shown in the sheets of this standard.
4 Designation
Table 1 lists material designations and constructions appropriate to each sheet. Material
conforming to this specification shall be identified by a designation containing the IEC standard
number, the material designation from IEC 60626-1 and the nominal thickness. For example:
IEC 60626-3, Sheet 112, P-C/F-PET/P-C, 0,15 mm
5 Thermal classification
Performance experience provides information about the thermal capability of combined flexible
materials in electrical insulation systems. This information is given in each individual sheet.
Thermal classification information on these sheets is not to be considered as a requirement.
6 Specification sheets
The presently 31 sheets listed in the Introduction are organised according to the composition of
the laminates as described in the following master listing Table 1, including sections that could
be offered by the market in the future; therefore classification numbering is already provided
for future growth.
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60626-3 © IEC:2008 – 9 –
Table 1 – Master listing for IEC 60626-3 sheet identification
Sheet No. Flexible laminate composition
100 to 149 Paper or presspaper containing sulphate wood pulp fibres
100 to 109 Duplex with PET film
110 to 119 Triplex with PET film
a
120 to 149 Others
a
150 to 199 Paper or presspaper containing cotton fibres
a
150 to 159 Duplex with PET film
a
160 to 169 Triplex with PET film
a
170 to 199 Others
a
200 to 249 Paper or presspaper containing both cotton and wood pulp fibres
a
200 to 209 Duplex with PET film
a
210 to 219 Triplex with PET film
a
220 to 249 Others
250 to 299 Paper or presspaper containing other cellulosic fibres or mixtures of cellulosic and non-
a
cellulosic fibers
300 to 399 Wet-laid paper containing organic non-cellulosic fibres
300 to 309 Duplex calendered aramid with PET film
310 to 319 Triplex calendered aramid with PET film
320 to 329 Triplex uncalendered aramid with PET film
330 to 339 Triplex calendered aramid with PI film
340 to 349 Duplex hybrid organic-inorganic with PET film
350 to 359 Triplex hybrid organic-inorganic with PET film
360 to 369 Triplex hybrid organic-inorganic with filled glass paper
a
370 to 399 Others
400 to 499 Wet-laid paper containing inorganic fibres
400 to 459 Glass
a
460 to 499 Others
500 to 599 Dry-laid non-woven containing organic fibres
500 to 519 100 % PET-based fibres
a
520 to 539 100 % aramid-based fibres
a
540 to 599 Others
600 to 999 Other constructions
a
Sections provided for future development of new specification sheets at present are void.
The specification sheets developed for the time being are: 100, 101, 102, 110, 111, 112, 113, 114,
115, 302, 303, 312, 313, 315, 320, 330, 340, 350, 351, 360, 400, 401, 402, 403, 410, 411, 420, 421,
502, 503, 505, and are given below.
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– 10 – 60626-3 © IEC:2008
Sheet 100
Requirements for combined flexible duplex materials of two layers –
F-PET/P-C (23 μm PET film with presspaper or paper)
1 Description
This sheet gives the requirements for duplex materials consisting of paper or presspaper
containing sulphate wood pulp fibres (P-C) laminated on a polyethylene terephthalate film
(F-PET) having a nominal thickness of 23 μm.
2 Thermal classification
Experience has shown that the combined flexible materials listed in this sheet may be suitable
for use in electrical apparatus with ratings up to and including the range of 120 °C to 130 °C.
3 Single-layer requirements
Use paper which meets the requirements for classes 1.1, 1.2, 1.3 or 1.4 of IEC 60554-1 and
IEC 60554-3. Alternatively, use presspaper which meets the requirements for P2, P4 or P6 of
IEC 60641-1 and IEC 60641-3-2. Each of these presspapers or papers can have a different
density, which will affect the nominal grammage of the laminate.
Use a PET film, which has a nominal thickness of 23 μm and meets the requirements of
IEC 60674-1 and IEC 60674-3-2.
4 Breakdown voltage requirements
For all laminates listed in Clause 5, the minimum electric breakdown voltage using 6 mm
diameter electrodes is
– for unfolded specimens: 6 kV;
– for folded specimens: 5 kV.
However, in accordance with IEC 60626-2, a minimum electric breakdown voltage on folded
specimens is not required for laminates of nominal thickness greater than 0,5 mm.
5 Additional requirements
Additional requirements are given in the table below:
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60626-3 © IEC:2008 – 11 –
Property Clause in Units
IEC 60626-2 Tolerance
Laminate nominal
2 mm 0,10 0,13 0,15 0,18 0,20 0,30 0,35 0,40 0,45 0,50 0,60
thickness
Laminate
2 ± % 15 15 15 15 15 15 10 10 10 10 10
thickness
tolerance
2
g/m
Laminate
115 155 190 215 250 300 370 430 490 610 730
3
±12 %
nominal
grammage
Tensile strength N/10 mm
90 100 135 150 180 220 270 300 360 450 540
4
unfolded min.
60 70 90 100 120 140 180 200 240 300 360
MD
CMD
Tensile N/10 mm
70 80 100 110 140 170 210 240 280 350 420
strength folded, 4
min.
film inside 40 50 60 70 80 100 120 140 160 200 240
MD
CMD
Elongation, % min.
unfolded MD 3 3 3 3 5 5 5 5 5 5 5
4
10 10 10 10 13 13 13 13 13 13 13
CMD
NOTES
MD = machine direction
CMD = cross machine direction
min. = minimum
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– 12 – 60626-3 © IEC:2008
Sheet 101
Requirements for combined flexible duplex materials of two layers –
F-PET/P-C (36 μm PET film with presspaper or paper)
1 Description
This sheet gives the requirements for duplex materials consisting of paper or presspaper containing
sulphate wood pulp fibres (P-C) laminated on a polyethylene terephthalate film (F-PET) having
a nominal thickness of 36 μm.
2 Thermal classification
Experience has shown that the combined flexible materials listed in this sheet may be suitable
for use in electrical apparatus with ratings up to and including the range of 120 °C to 130 °C.
3 Single-layer requirements
Use paper which meets the requirements for classes 1.1, 1.2, 1.3, or 1.4 of IEC 60554-1 and
IEC 60554-3. Alternatively, use presspaper which meets the requirements for P2, P4 or P6 of
IEC 60641-1 and IEC 60641-3-2. Each of these presspapers or papers can have a different
density, which will affect the nominal grammage of the laminate.
Use a PET film which has a nominal thickness of 36 μm and meets the requirements of
IEC 60674-1 and IEC 60674-3-2.
4 Breakdown voltage requirements
For all laminates listed in Clause 5, the minimum electric breakdown voltage using 6 mm
diameter electrodes is
– for unfolded specimens: 7 kV;
– for folded specimens: 6 kV.
However, in accordance with IEC 60626-2, a minimum electric breakdown voltage on folded
specimens is not required for laminates of nominal thickness greater than 0,5 mm.
5 Additional requirements
Additional requirements are given in the table below.
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60626-3 © IEC:2008 – 13 –
Property Clause in Units
IEC 60626-2 Tolerance
Laminate nominal
2 mm 0,10 0,15 0,20 0,25 0,30 0,35 0,40 0,45 0,50 0,60
thickness
Laminate
2 ± % 15 15 15 15 10 10 10 10 10 10
thickness
tolerance
2
g/m
Laminate
3 120 190 250 280 370 395 490 510 610 730
±12 %
nominal
grammage
Tensile strength N/10 mm
4
unfolded min.
90 135 180 190 270 280 360 380 450 540
MD
60 90 120 130 180 190 240 250 300 360
CMD
Tensile N/10
...
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