IEC 60695-2-12:2010/AMD1:2014
(Amendment)Amendment 1 - Fire hazard testing - Part 2-12: Glowing/hot-wire based test methods - Glow-wire flammability index (GWFI) test method for materials
Amendment 1 - Fire hazard testing - Part 2-12: Glowing/hot-wire based test methods - Glow-wire flammability index (GWFI) test method for materials
IEC 60695-2-12:2014 Amendment 1
Amendement 1 - Essais relatifs aux risques du feu - Partie 2-12: Essais au fil incandescent/chauffant - Méthode d'essai d'indice d'inflammabilité au fil incandescent (GWFI) pour matériaux
IEC 60695-2-12:2014 Amendement 1
General Information
- Status
- Published
- Publication Date
- 11-Feb-2014
- Technical Committee
- TC 89 - Fire hazard testing
- Drafting Committee
- WG 12 - TC 89/WG 12
- Current Stage
- DELPUB - Deleted Publication
- Start Date
- 08-Oct-2021
- Completion Date
- 26-Oct-2025
Relations
- Effective Date
- 05-Sep-2023
- Effective Date
- 05-Sep-2023
Overview
IEC 60695-2-12:2010/AMD1:2014 is an important amendment to the international standard governing fire hazard testing focused on glowing/hot-wire based test methods. It specifically updates the Glow-wire Flammability Index (GWFI) test method for materials, which measures the flammability characteristics of materials when exposed to heat from an electrically heated wire under controlled laboratory conditions. Developed by the International Electrotechnical Commission (IEC), this amendment aims to enhance safety and reliability in evaluating materials used in electrotechnical products vulnerable to thermal stress.
This standard plays a critical role in fire hazard assessment by providing a repeatable, standardized test method to quantify how materials react to glowing wire ignition, simulating scenarios such as electrical faults, component overloading, and poor connections. The GWFI results are valuable for manufacturers and safety professionals seeking to ensure product compliance with fire safety expectations.
Key Topics
Scope and Purpose: The standard concentrates on materials' response to a hot wire source rather than assessing the entire fire risk of assembled products under real fire conditions. GWFI testing is intended as part of an overall fire hazard evaluation strategy.
Test Specimen Preparation: Materials are shaped via standardized ISO methods, including casting, injection molding (ISO 294 series), compression molding (ISO 293 and ISO 295), or transfer molding. When molding is not feasible, specimens are cut from representative samples fabricated by the same process as the final product material.
Testing Conditions: Specimens are tested in labs maintaining temperatures between 15 °C and 35 °C, with relative humidity ≤ 75%. The glow-wire temperatures used range from 550 °C to 960 °C with precise tolerances to ensure accuracy.
Test Procedure and Observations: The test measures the longest sustained flaming or glowing combustion after removal of the heated wire, with ignition time recorded to the nearest 0.5 seconds. Key criteria include extinguishment within 30 seconds post wire removal.
Reporting Results: GWFI values are reported along with material thickness ranges, for example, "GWFI: 850 / 0.75 – 3.0", indicating the glow-wire flammability temperature and applicable specimen thickness spectrum.
Normative References: Relevant ISO and IEC guides and standards are referenced for specimen preparation and safety considerations to maintain consistency and complementarity across testing protocols.
Applications
Material Selection for Electrotechnical Products: GWFI testing guides designers and manufacturers in selecting materials that resist ignition and sustain minimal combustion when exposed to excess thermal stress in electrical environments.
Fire Safety Engineering: Results help safety engineers evaluate fire hazard elements related to electrical faults or overheating components, critical in preventing fires originating from electrical equipment.
Product Compliance and Certification: Incorporating IEC 60695-2-12 GWFI testing into quality assurance processes supports compliance with international fire safety standards during product development.
Risk Assessment for Electrical Installations: Using GWFI data contributes to comprehensive fire risk assessments, especially for products used in environments with potential electrical overcurrent or faulty connections.
Related Standards
IEC 60695-2-11: Glow-wire flammability test method for end-products - complements GWFI by focusing on the behavior of final products rather than raw materials.
IEC 60695-2-13: Glow-wire ignition temperature (GWIT) test method - measures the ignition point of materials when exposed to a heated wire, closely related to GWFI.
ISO/IEC 13943:2008: Fire safety vocabulary - provides standardized terms and definitions relevant to the fire hazard testing community.
ISO 293 & ISO 295: Plastics compression molding methods - essential for preparing test specimens in accordance with IEC 60695-2-12 requirements.
Practical Value
Adopting the IEC 60695-2-12 Amendment 1 in fire hazard testing ensures:
Consistent, reliable assessment of material flammability characteristics relevant to electrical products.
Enhanced safety evaluation aligned with international best practices, reducing risk of fire hazards initiated by electrical faults.
Improved material selection and product design processes, driving safer and more resilient electrotechnical equipment.
Clear communication and documentation within the supply chain facilitated by standardized testing, reporting, and interpretation of glow-wire flammability data.
By integrating this standardized glow-wire flammability index test, industries can mitigate fire risks more effectively, fostering safer products and environments worldwide.
Frequently Asked Questions
IEC 60695-2-12:2010/AMD1:2014 is a standard published by the International Electrotechnical Commission (IEC). Its full title is "Amendment 1 - Fire hazard testing - Part 2-12: Glowing/hot-wire based test methods - Glow-wire flammability index (GWFI) test method for materials". This standard covers: IEC 60695-2-12:2014 Amendment 1
IEC 60695-2-12:2014 Amendment 1
IEC 60695-2-12:2010/AMD1:2014 has the following relationships with other standards: It is inter standard links to IEC 60695-2-12:2010, IEC 60695-2-12:2021. Understanding these relationships helps ensure you are using the most current and applicable version of the standard.
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Standards Content (Sample)
IEC 60695-2-12 ®
Edition 2.0 2014-02
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
BA SIC SAFETY PUBLICATION
PU BLICATION FONDAMENTALE DE SÉCURITÉ
AMENDMENT 1
AMENDEMENT 1
Fire hazard testing –
Part 2-12: Glowing/hot-wire based test methods – Glow-wire flammability index
(GWFI) test method for materials
Essais relatifs aux risques du feu –
Partie 2-12: Essais au fil incandescent/chauffant – Méthode d'essai d'indice
d’inflammabilité au fil incandescent (GWFI) pour matériaux
IEC 60695-2-12:2010-10/AMD1:2014-02(EN-FR)
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IEC 60695-2-12 ®
Edition 2.0 2014-02
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
BA SIC SAFETY PUBLICATION
PU BLICATION FONDAMENTALE DE SÉCURITÉ
AMENDMENT 1
AMENDEMENT 1
Fire hazard testing –
Part 2-12: Glowing/hot-wire based test methods – Glow-wire flammability index
(GWFI) test method for materials
Essais relatifs aux risques du feu –
Partie 2-12: Essais au fil incandescent/chauffant – Méthode d'essai d'indice
d’inflammabilité au fil incandescent (GWFI) pour matériaux
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
PRICE CODE
INTERNATIONALE
CODE PRIX E
ICS 13.220.40, 29.020 ISBN 978-2-8322-1366-7
– 2 – 60695-2-12 Amend.1 IEC:2014
FOREWORD
This amendment has been prepared by technical committee 89: Fire hazard testing.
The text of this amendment is based on the following documents:
FDIS Report on voting
89/1198/FDIS 89/1207/RVD
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.
_____________
60695-2-12 Amend.1 IEC:2014 – 3 –
INTRODUCTION
Replace the fourth paragraph of the Introduction by the following:
Fires involving electrotechnical products can also be initiated from external non-electrical
sources. Considerations of this nature should be dealt with in the overall fire hazard
assessment.
Replace the seventh paragraph by the following:
This part of IEC 60695 describes a glow-wire flammability index test for materials. It should be
used to measure, describe, and rank the properties of materials in response to heat caused
by contact with an electrically heated wire under controlled laboratory conditions. This may be
useful for the evaluation of materials for use in products that may be exposed to excess
thermal stress such as a fault current flowing through a wire, overloading of components,
and/or bad connections. It should not be used to solely describe or appraise the fire hazard or
fire risk of materials, products, or assemblies under actual fire conditions. However, results of
this test may be used as elements of a fire hazard assessment which takes into account all of
the factors which are pertinent to a particular end use.
2 Normative references
Remove the dates from the following existing referen
...
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