EN 60099-5:2013

FOREWORD
1 Scope
2 Normative references
3 Terms and definitions
4 General principles for the application of surge
  arresters
5 Surge arrester fundamentals and applications issues
6 Insulation coordination and surge arrester
  applications
7 Surge arresters for special applications
8 Asset management of surge arresters
Annex A (informative) - Determination of temporary
        overvoltages due to earth faults
Annex B (informative) - Current practice
Annex C (informative) - Arrester modelling techniques
        for studies involving insulation coordination
        and energy requirements
Annex D (informative) - Diagnostic indicators of
        metal-oxide surge arresters in service
Annex E (informative) - Typical data needed from arrester
        manufacturers for proper selection of surge
        arresters
Annex F (informative) - Typical maximum residual
        voltages for metal-oxide arresters without gaps
        according to IEC 60099-4
Annex G (informative) - Steepness reduction of
        incoming surge with additional line terminal
        surge capacitance
Annex H (informative) - End of life and replacement
        of old gapped SiC-arresters
Bibliography
Annex ZA (normative) - Normative references to
         international publications with their
         corresponding European publications

IEC 60099-5:2013(E) is not a mandatory standard but provides information, guidance, and recommendations for the selection and application of surge arresters to be used in three-phase systems with nominal voltages above 1 kV. It applies to gapless metal-oxide surge arresters as defined in IEC 60099-4, to surge arresters containing both series and parallel gapped structure - rated 52 kV and less as defined in IEC 60099-6 and metal-oxide surge arresters with external series gap for overhead transmission and distribution lines (EGLA) as defined in IEC 60099-8. In Annex H, some aspects regarding the old type of SiC gapped arresters are discussed. This second edition cancels and replaces the first edition published in 1996 and its amendment 1 published in 1999. This edition constitutes a technical revision. This edition includes the following significant technical changes with respect to the previous edition: - Expanded discussion of different types of arresters and their application, including additions of discussion on transmission of line arresters, arresters for shunt capacitor switching arresters for series capacitor protection, application of arresters between phases connecting arresters in parallel; - Addition of section on asset management, including: managing surge arresters in the power grid, arrester maintenance, significantly expanded discussion of performance diagnostic tools, end-of-life considerations; - New annexes dealing with: arrester modelling for system studies, example of data needed for specifying arresters. Key words: selection and application of surge arrestors, nominal voltages above 1 kV