I.S. EN IEC 60099-5:2018

National foreword
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) - Comparison of the former energy
        classification system based on line discharge classes
        and the present classification system based on thermal
        energy ratings for operating duty tests and repetitive
        charge transfer ratings for repetitive single
        event energies
Annex I (informative) - Estimation of arrester cumulative
        charges and energies during line switching
Annex J (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

Gives 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.