IEC 60626-3:2008/AMD1:2012

IEC 60626-3 ®
Edition 3.0 2012-07
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
AMENDMENT 1
AMENDEMENT 1
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/A1:2012
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IEC 60626-3 ®
Edition 3.0 2012-07
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
AMENDMENT 1
AMENDEMENT 1
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
CODE PRIX F
ICS 29.035.01 ISBN 978-2-83220-149-7

– 2 – 60626-3 Amend. 1 © IEC:2012
FOREWORD
This amendment has been prepared by IEC technical committee 15: Solid electrical insulating
materials.
The text of this amendment is based on the following documents:
CDV Report on voting
15/647/CDV 15/673A/RVC
Full information on the voting for the approval of this amendment can be found in the report
on voting indicated in the above table.
The committee has decided that the contents of this amendment and the base publication will
remain unchanged until the stability 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• withdrawn,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.
_____________
6 Specification sheets
Add the following new Sheet 352 after the existing Sheet 351:

60626-3 Amend. 1 © IEC:2012 – 3 –
Sheet 352
Requirements for combined flexible triplex materials of three layers –
P-H/F-PET/P-H (60 µm hybrid inorganic-organic paper
on both sides of PET film)
1 Description
This sheet gives the requirements for triplex materials consisting of a layer of insulating paper
(P-H) having a nominal thickness of 60 µm, laminated on both sides of a polyethylene
terephthalate film (F-PET).
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 temperature range of
155 °C to 180 °C.
3 Single-layer requirements
Use hybrid inorganic-organic paper of a nominal thickness of 60 µm, which meets the
requirements of IEC 60819-1 and IEC 60819-3-2.
Use a PET film which meets the requirements of IEC 60674-1 and IEC 60674-3-2.
4 Additional requirements
Additional requirements are given in the table below.
Property Clause in Units
IEC 60626-2 Tolerance
Laminate
2 mm 0,14  0,17  0,19  0,22  0,25  0,31  0,37  0,47
nominal
thickness
Laminate
2 15   15    15   15    15    15    15    15
± %
thickness
tolerance
Laminate g/m
3 120   165    210  235   270  365   460   590
nominal
± 15 %
grammage
Film nominal µm 23    50     75   100   125   190   250   350

thickness
Tensile
strength N/10 mm min.
unfolded
MD 45    65     85   105   125   170   215   275
CMD 30    50     65    85   105   150   200   265
Tensile
strength N/10 mm min.
folded
MD 45    65     85   105   125   170   215   275
CMD 30    50     65    85   105   150   200   265
Elongation
unfolded % min.
MD 8     8      8     8    8    8     8     8
CMD 8     8      8     8    8    8     8     8

– 4 – 60626-3 Amend. 1 © IEC:2012
Property Clause in Units
IEC 60626-2 Tolerance
Electric
breakdown kV min.
voltage,
Unfolded 5     7      9     10    12   15    18    21
6 mm diameter
Folded 4     6      8     8    10   12    15    18
electrodes
NOTE
MD = machine direction
CMD = cross machine direction
min. = minimum
Sheet 340
4 Additional requirements
Replace the existing table with the following new table:
Property Clause in Units
IEC 60626-2 Tolerance
Laminate nominal mm 0,10 0,15 0,18 0,21
thickness
Laminate thickness
2 15 15 15 15
± %
tolerance
Laminate nominal
3 g/m 135 180 215 250
grammage
± 15 %
Film nominal
23 23 50 23
µm
thickness
Tensile strength N/10 mm min.
unfolded MD 115 135 230 155
CMD 50   55    115    60
Tensile strength N/
...