IEC 60626-3:2008/AMD1:2012
(Amendment)Amendment 1 - Combined flexible materials for electrical insulation - Part 3: Specifications for individual materials
Amendment 1 - Combined flexible materials for electrical insulation - Part 3: Specifications for individual materials
Amendement 1 - Matériaux combinés souples destinés à l'isolement électrique - Partie 3: Spécifications pour matériaux particuliers
General Information
- Status
- Published
- Publication Date
- 16-Jul-2012
- Technical Committee
- TC 15 - Solid electrical insulating materials
- Drafting Committee
- MT 10 - TC 15/MT 10
- Current Stage
- PPUB - Publication issued
- Start Date
- 17-Jul-2012
- Completion Date
- 31-Aug-2012
Relations
- Effective Date
- 05-Sep-2023
Overview
IEC 60626-3:2008/AMD1:2012 is an important amendment to the international standard covering combined flexible materials for electrical insulation, specifically Part 3, which details the specifications for individual materials. Published by the International Electrotechnical Commission (IEC), this amendment provides updated technical requirements and testing criteria for triplex laminated flexible insulating materials used in electrical applications.
The standard focuses on high-performance hybrid materials combining inorganic-organic paper and polyethylene terephthalate (PET) films designed for electrical insulation. It outlines essential parameters such as thermal classification, mechanical strength, thickness tolerances, and electrical breakdown voltage. This amendment enhances clarity and precision in the specifications to ensure reliability, safety, and durability in electrical apparatus insulation.
Key Topics
Material Composition:
- Specifies triplex laminate consisting of 60 µm hybrid inorganic-organic paper (P-H) laminated on both sides of a PET film (F-PET).
- Emphasizes use of materials compliant with IEC 60819-1, IEC 60819-3-2 (for paper), and IEC 60674-1 and IEC 60674-3-2 (for PET films).
Thermal Classification:
- Suitable for equipment operating in temperature ranges from 155 °C up to 180 °C.
- Enables selection of electrically insulating materials meeting demanding high-temperature conditions.
Mechanical Properties:
- Defines tensile strength requirements for both unfolded and folded conditions, differentiated by machine direction (MD) and cross-machine direction (CMD).
- Specifies minimum elongation percentages ensuring flexibility and mechanical resilience.
Dimensional and Weight Tolerances:
- Provides strict thickness tolerances (±15%) for laminated materials and PET films.
- Grammage values defined for quality control of insulation materials’ density and consistency.
Electrical Properties:
- Sets minimum electrical breakdown voltage values measured using 6 mm diameter electrodes both for unfolded and folded materials.
- Ensures electrical insulation reliability under specified voltages.
Additional Specification Sheets:
- Amendment introduces new specification sheets and updates existing tables for various grades/thicknesses of combined materials.
- Provides standardized, detailed test criteria on tensile strength, elongation, thickness, and electric breakdown for different laminate variants.
Applications
IEC 60626-3:2008/AMD1:2012 is highly applicable for manufacturers and users of electrical insulation materials where performance under thermal stress and electrical endurance is critical. Typical applications include:
Electrical Transformers and Switchgear:
Insulation systems requiring reliable, flexible materials withstanding high operating temperatures.High-Voltage Electrical Equipment:
Ensuring dielectric strength and mechanical integrity under folding, bending, and thermal cycling.Power Electronics and Motors:
Flexible insulation materials that maintain structural and electrical properties in compact, thermally challenging environments.Electrical Insulation Research and Development:
Guiding material selection and quality testing for new insulation technologies that comply with international performance benchmarks.
Related Standards
IEC 60819 Series:
Specifications for insulating papers, including performance requirements for hybrid inorganic-organic papers.IEC 60674 Series:
Test methods and requirements for the physical properties of films used in electrical insulation.IEC 60626-2:
Defines testing provisions and methods for combined flexible insulation materials, referenced throughout this amendment.General IEC Electrical Insulation Standards:
Outlining terminology, testing procedures, and classification guidelines for solid electrical insulating materials.
By adhering to IEC 60626-3:2008/AMD1:2012, stakeholders in electrical insulation materials can ensure compliance with internationally recognized quality, safety, and performance standards for combined flexible insulating materials. This leads to enhanced durability, safety, and efficiency in electrical apparatus insulation across global markets.
Frequently Asked Questions
IEC 60626-3:2008/AMD1:2012 is a standard published by the International Electrotechnical Commission (IEC). Its full title is "Amendment 1 - Combined flexible materials for electrical insulation - Part 3: Specifications for individual materials". This standard covers: Amendment 1 - Combined flexible materials for electrical insulation - Part 3: Specifications for individual materials
Amendment 1 - Combined flexible materials for electrical insulation - Part 3: Specifications for individual materials
IEC 60626-3:2008/AMD1:2012 is classified under the following ICS (International Classification for Standards) categories: 29.035.01 - Insulating materials in general. The ICS classification helps identify the subject area and facilitates finding related standards.
IEC 60626-3:2008/AMD1:2012 has the following relationships with other standards: It is inter standard links to IEC 60626-3:2008. Understanding these relationships helps ensure you are using the most current and applicable version of the standard.
You can purchase IEC 60626-3:2008/AMD1:2012 directly from iTeh Standards. The document is available in PDF format and is delivered instantly after payment. Add the standard to your cart and complete the secure checkout process. iTeh Standards is an authorized distributor of IEC standards.
Standards Content (Sample)
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/
...
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