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INTERNATIONAL STANDARD Fire hazard testing – Part 2-13: Glowing/hot-wire based

INTERNATIONAL STANDARD Fire hazard testing – Part 2-13: Glowing/hot-wire based test methods – Glow-wire ignition temperature (GWIT) test method for materials INTERNATIONAL ELECTROTECHNICAL COMMISSION ICS 13.220.40; 29.020 ISBN 978-2-8322-4438-8 HORIZONTAL PUBLICATION ® Registered trademark of the International Electrotechnical Commission ® Warning! Make sure that you obtained this publication from an authorized distributor. IEC 60695-2-13 Edition 3.0 2021-08 REDLINE VERSION colour inside This is a preview - click here to buy the full publication – 2 – IEC 60695-2-13:2021 RLV © IEC 2021 CONTENTS FOREWORD ......................................................................................................................... 3 INTRODUCTION ................................................................................................................... 5 1 Scope ............................................................................................................................ 6 2 Normative references..................................................................................................... 6 3 Terms and definitions .................................................................................................... 7 4 Test specimens ............................................................................................................. 8 4.1 Test specimen preparation .................................................................................... 8 4.2 Test specimen dimensions .................................................................................... 8 4.3 Testing ranges in formulations ............................................................................... 9 4.3.1 General ......................................................................................................... 9 4.3.2 Density, melt flow, and filler/reinforcement ...................................................... 9 4.3.3 Colour ........................................................................................................... 9 5 Apparatus ...................................................................................................................... 9 6 Temperature measuring system verification .................................................................... 9 7 Conditioning and test conditions .................................................................................. 10 7.1 Conditioning of test specimens ............................................................................ 10 7.2 Testing conditions ............................................................................................... 10 8 Test procedure ............................................................................................................ 10 8.1 General ............................................................................................................... 10 8.2 Initial test temperatures ....................................................................................... 10 8.3 Test temperatures ............................................................................................... 10 9 Observations and measurements ................................................................................. 11 9.1 General .................................................................................................................. 9.1 Initial observations .............................................................................................. 11 9.2 Test observations ................................................................................................ 11 10 Evaluation of test results .............................................................................................. 12 10.1 Test criteria ......................................................................................................... 12 10.2 Glow-wire ignition temperature ............................................................................ 12 11 Test report................................................................................................................... 12 Bibliography ....................................................................................................................... 13 Table 1 – Initial test temperatures ....................................................................................... 10 This is a preview - click here to buy the full publication IEC 60695-2-13:2021 RLV © IEC 2021 – 3 – INTERNATIONAL ELECTROTECHNICAL COMMISSION ____________ FIRE HAZARD TESTING – Part 2-13: Glowing/hot-wire based test methods – Glow-wire ignition temperature (GWIT) test method for materials FOREWORD 1) The International Electrotechnical Commission (IEC) is a worldwide organization for standardization comprising all national electrotechnical committees (IEC National Committees). The object of IEC is to promote international co-operation on all questions concerning standardization in the electrical and electronic fields. To this end and in addition to other activities, IEC publishes International Standards, Technical Specifications, Technical Reports, Publicly Available Specifications (PAS) and Guides (hereafter referred to as “IEC Publication(s)”). Their preparation is entrusted to technical committees; any IEC National Committee interested in the subject dealt with may participate in this preparatory work. International, governmental and non- governmental organizations liaising with the IEC also participate in this preparation. IEC collaborates closely with the International Organization for Standardization (ISO) in accordance with conditions determined by agreement between the two organizations. 2) The formal decisions or agreements of IEC on technical matters express, as nearly as possible, an international consensus of opinion on the relevant subjects since each technical committee has representation from all interested IEC National Committees. 3) IEC Publications have the form of recommendations for international use and are accepted by IEC National Committees in that sense. While all reasonable efforts are made to ensure that the technical content of IEC Publications is accurate, IEC cannot be held responsible for the way in which they are used or for any misinterpretation by any end user. 4) In order to promote international uniformity, IEC National Committees undertake to apply IEC Publications transparently to the maximum extent possible in their national and regional publications. Any divergence between any IEC Publication and the corresponding national or regional publication shall be clearly indicated in the latter. 5) IEC itself does not provide any attestation of conformity. Independent certification bodies provide conformity assessment services and, in some areas, access to IEC marks of conformity. IEC is not responsible for any services carried out by independent certification bodies. 6) All users should ensure that they have the latest edition of this publication. 7) No liability shall attach to IEC or its directors, employees, servants or agents including individual experts and members of its technical committees and IEC National Committees for any personal injury, property damage or other damage of any nature whatsoever, whether direct or indirect, or for costs (including legal fees) and expenses arising out of the publication, use of, or reliance upon, this IEC Publication or any other IEC Publications. 8) Attention is drawn to the Normative references cited in this publication. Use of the referenced publications is indispensable for the correct application of this publication. 9) Attention is drawn to the possibility that some of the elements of this IEC Publication may be the subject of patent rights. IEC shall not be held responsible for identifying any or all such patent rights. This redline version of the official IEC Standard allows the user to identify the changes made to the previous edition IEC 60695-2-13:2010+AMD1:2014 CSV. A vertical bar appears in the margin wherever a change has been made. Additions are in green text, deletions are in strikethrough red text. This is a preview - click here to buy the full publication – 4 – IEC 60695-2-13:2021 RLV © IEC 2021 IEC 60695-2-13 has been prepared by IEC technical committee 89: Fire hazard testing. It is an International Standard. This third edition cancels and replaces the second edition published in 2010 and Amendment 1:2014. This edition constitutes a technical revision. This edition includes the following significant technical changes with respect to the previous edition: a) New terms and definitions with regards to times and durations have been added to Clause 3, with an effect on the application of the test method. The text of this International Standard is based on the following documents: FDIS Report on voting 89/1538/FDIS 89/1546/RVD Full information on the voting for its approval can be found in the report on voting indicated in the above table. The language used for the development of this International Standard is English. This document was drafted in accordance with ISO/IEC Directives, Part 2, and developed in accordance with ISO/IEC Directives, Part 1 and ISO/IEC Directives, IEC Supplement, available at www.iec.ch/members_experts/refdocs. The main document types developed by IEC are described in greater detail at www.iec.ch/standardsdev/publications. It has the status of a basic safety publication in accordance with IEC Guide 104. This standard is to be used in conjunction with IEC 60695-2-10. A list of all the parts in the IEC 60695 series, under the general title Fire hazard testing, can be found on the IEC web site. The committee has decided that the contents of this document will remain unchanged until the stability date indicated on the IEC website under webstore.iec.ch in the data related to the specific document. At this date, the document will be • reconfirmed, • withdrawn, • replaced by a revised edition, or • amended. IMPORTANT – The 'colour inside' logo on the cover page of this publication indicates that it contains colours which are considered to be useful for the correct understanding of its contents. Users should therefore print this document using a colour printer. This is a preview - click here to buy the full publication IEC 60695-2-13:2021 RLV © IEC 2021 – 5 – INTRODUCTION In electrotechnical equipment, overheated metal parts can act as ignition sources. In glow- wire tests an electrically heated wire is used to simulate such an ignition source. IEC 60695-2-10 describes a glow-wire test apparatus and common test procedure, IEC 60695-2-11 describes a glow-wire flammability test for end products, and IEC 60695-2-12 describes a glow-wire flammability index test method for materials. In the design of any electrotechnical product, the risk of fire and the potential hazards associated with fire need to be considered. In this respect the objective of component, circuit, and product design, as well as the choice of materials, is to reduce to acceptable levels the potential risks of fire during normal operating conditions, reasonable foreseeable abnormal use, malfunction and/or failure. IEC 60695-1-10 [1] 1 , together with its companion IEC 60695-1-11 [2], has been developed to provide guidance on how this is to be accomplished. The primary aims of IEC 60695-1-10 and IEC 60695-1-11 are to provide guidance on how to: a) prevent ignition caused by an electrically energized component part, and b) confine any resulting fire within the bounds of the enclosure of the electrotechnical product in the event of ignition. Secondary aims of IEC 60695-1-10 and IEC 60695-1-11 include the minimization of any flame spread beyond the product’s enclosure and the minimization of the harmful effects of fire effluents such as heat, smoke, toxicity and/or corrosivity. Fires involving electrotechnical products can also be initiated from external non-electrical sources. Considerations of this nature should be are normally dealt with in the overall fire hazard assessment. In electrotechnical equipment, overheated metal parts can act as ignition sources. In glow- wire tests, a glowing wire is used to simulate such an ignition source. IEC 60695-2-10 describes a glow-wire test apparatus and common test procedure, IEC 60695-2-11 [3] describes a glow-wire flammability test for end products, and IEC 60695-2-12 describes a glow-wire flammability index (GWFI) test method for materials. This document describes a glow-wire ignition temperature test method for materials. It should is intended to be used to measure, describe, and rank the properties uploads/s1/info-iec60695-2-13-ed3-0-rlv-en.pdf