IEC 60695-1-20:2016

FOREWORD
INTRODUCTION
1 Scope
2 Normative references
3 Terms and definitions
4 Principles of ignitability
5 Consideration for the selection of test methods
6 Use and interpretation of results
Annex A (informative) - Examples of accidents due to
        arc fires in underground hydroelectric power
        plants or urban substations
Bibliography

IEC 60695-1-20:2016 provides guidance on the ignitability of electrotechnical products and the materials from which they are formed. It gives guidance on the principles of ignitability; the selection of appropriate test methods and the use and interpretation of results. This first edition of IEC 60695-1-20 cancels and replaces the first edition of IEC TS 60695-1-20 published in 2008. This edition constitutes a technical revision. This edition includes the following significant technical changes with respect to the previous edition:
- ISO 5660-1 has been added to the normative references;
- definitions of pyrolysis and short-circuit have been added to Clause 3;
- some text from the introduction has been moved to Clause 5 and is now part of the normative text and Clause 5 now contains several mandatory statements. This part of IEC 60695 is intended for use by technical committees in preparation of standards in accordance with IEC Guide 104 and ISO/IEC Guide 51. Key words: Fire Hazard, Fire Test Method, Fire Safety Engineering, Ignitability.