BS EN 60695-11-20:2015 - Fire hazard testing. Test flames. 500 W flame test methods

BS EN 60695-11-20:2015

Fire hazard testing. Test flames. 500 W flame test methods

Status : Current   Published : July 2015



This part of IEC 60695 describes a test method consisting of two small-scale laboratory test procedures which is intended to compare the burning behaviour of different materials used in electrotechnical products. Vertically oriented bar specimens or horizontally oriented plate test specimens are exposed to a small flame ignition source with a nominal thermal power of 500 W. The test method uses two test specimen configurations to classify material performance. Rectangular bar-shaped test specimens are used to assess ignitability and burning behaviour, and square plate test specimens are used to assess the resistance of the test specimen to burn-through, as defined in 8.3.3. This test method only applies to materials that have been classified as V-0 or V-1 according to IEC 60695‑11‑10.

This test method is only applicable to solid and cellular materials that have an apparent density of more than 250 kg/m 3, determined in accordance with ISO 845. The method does not apply to materials that shrink away from the applied flame without igniting due to their thinness.

The test method described provides classifications which may be used for quality assurance, the pre-selection of component materials of products, or to verify the required minimum flammability classification of materials used in end products. If used for pre-selection, then positive results shall be obtained at a test specimen thickness which equals the smallest thickness used in the product application.

The results obtained provide some information about the behaviour of materials in service, but cannot by themselves assure safe performance in service.


Guidance on pre-selection is given in IEC 60695‑1‑30[3]1.


Test results are influenced by material additives, e.g. pigments, fillers, and fire retardants, and properties such as the direction of anisotropy and the molecular mass.

This basic safety publication is intended for use by technical committees in the preparation of standards in accordance with the principles laid down in IEC Guide 104 and ISO/IEC Guide 51.

One of the responsibilities of a technical committee is, wherever applicable, to make use of basic safety publications in the preparation of its publications. The requirements, test methods or test conditions of this basic safety publication will not apply unless specifically referred to or included in the relevant publications.

Standard NumberBS EN 60695-11-20:2015
TitleFire hazard testing. Test flames. 500 W flame test methods
Publication Date31 July 2015
Normative References(Required to achieve compliance to this standard)ISO 294-3:1996, ISO 291:1994, EN ISO 293, EN ISO 294-3:1998, ISO/IEC Guide 51, ISO 16012, EN ISO 13943:2010, ISO 294-1:1996, ISO 13943:2008, IEC 60695-11-10, ISO 294-2:1996, EN 60695-11-10, EN ISO 294-2:1998, ISO 294:1996, EN ISO 295, IEC 60695-4:2012, IEC 60695-11-3, EN ISO 294-1:1998, EN ISO 291, EN 60695-4:2012, EN 60695-11-3, IEC Guide 104, EN ISO 845, ISO 845, ISO 293, ISO 295
Informative References(Provided for Information)IEC 60695-11-5:2004, IEC 60695-1-30:2008, EN 60695-11-5:2005, IEC 60695-1-10:2009, IEC 60695-1-11:2010, EN 60695-1-10:2010, EN 60695-1-11:2010, ISO 5725-2:1994, EN 60695-1-30:2008, EN ISO 1043-1:2011, ISO 1043-1:2011
ReplacesBS EN 60695-11-20:1999, IEC 60695-11-20:1999
International RelationshipsEN 60695-11-20:2015/AC:2016,EN 62364:2013,IEC 60695-11-20:2015,IEC 60695-11-20:2015/COR1:2016
Amended ByCorrigendum, March 2016
DescriptorsShape, Test specimens, Electronic equipment and components, Density, Rated power, Electrical components, Horizontal, Grades (quality), Fire-test classifications, Flames, Selection, Fire, Combustion, Flammability, Vertical, Electrical equipment, Reproducibility, Cellular materials, Laboratory testing, Specimen preparation, Testing conditions, Test equipment, Ignitability, Classification systems, Precision, Plastics, Fire tests
Title in FrenchEssais relatifs aux risques du feu. Flammes d'essai. Méthodes d'essai à la flamme de 500 W
Title in GermanPrüfungen zur Beurteilung der Brandgefahr. Prüfflammen. Prüfverfahren mit einer 500-W-Prüfflamme
ISBN978 0 580 93575 6
File Size1.01 MB

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