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BS EN IEC 60695-2-12:2021

BS EN IEC 60695-2-12:2021

$102.76

Fire hazard testing – Glowing/hot-wire based test methods. Glow-wire flammability index (GWFI) test method for materials

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BSI 2021 20
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This part of IEC 60695 specifies the details of the glow-wire test to be applied to test specimens of solid electrical insulating materials or other solid materials for flammability testing to determine the glow-wire flammability index (GWFI).

GWFI is the highest temperature, determined during this standardized procedure, at which the tested material does not ignite or, if it does, extinguishes within 30 s after removal of the glow-wire and is not totally consumed; and molten drips, if they occur, do not ignite the wrapping tissue.

This test method is a materials test carried out on a series of standard test specimens. The data obtained, along with data from the glow-wire ignition temperature (GWIT) test method for materials, IEC 60695-2-13, can then be used in a preselection process in accordance with IEC 60695-1-30 [4] to judge the ability of materials to meet the requirements of IEC 60695-2-11.

NOTE As an outcome of conducting a fire hazard assessment, an appropriate series of preselection flammability and ignition tests can allow a reduction of end product testing.

This basic safety publication focusing on safety test method(s) is primarily intended for use by technical committees in the preparation of safety publications 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.

PDF Catalog

PDF Pages PDF Title
2 undefined
5 Annex ZA (normative)Normative references to international publicationswith their corresponding European publications
7 English
CONTENTS
8 FOREWORD
10 INTRODUCTION
11 1 Scope
2 Normative references
12 3 Terms and definitions
13 4 Test specimens
4.1 Test specimen preparation
4.2 Test specimen dimensions
14 4.3 Testing ranges in formulations
4.3.1 General
4.3.2 Density, melt flows and filler/reinforcement
4.3.3 Colour
5 Apparatus
6 Temperature measuring system verification
7 Conditioning and test conditions
7.1 Conditioning of test specimens
15 7.2 Conditioning of the wrapping tissue and the wooden board
7.3 Testing conditions
8 Test procedure
8.1 General
8.2 Initial test temperatures
8.3 Test temperatures
Table 1 ā€“ Initial test temperatures
16 9 Observations and measurements
9.1 Initial observations
9.2 Test observations
10 Evaluation of test results
10.1 Test criteria
17 10.2 Glow-wire flammability index
11 Test report
18 Bibliography

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BS EN IEC 60695-2-12:2021
$102.76