1
Scope
2
References
3
Definitions
3.1
Terms defined elsewhere
3.2
Terms defined in this Recommendation
4
Abbreviations and acronyms
5
Reference configuration
6
General requirements
6.1
Impulse withstand voltage levels
6.2
Surge protective devices (SPDs)
6.3
Earthing and bonding
7
Indirect lightning performance of a telecommunication line
7.1
Number of damages and risk assessment
7.2
Tolerable risk
8
Node exposure to lightning-induced surges
8.1
Unshielded nodes
8.2
Shielded nodes
8.3
Effect of surge protective devices
Annex A – Environmental factor and installation factor
Annex B – Refraction factor
Annex C – Shielding factor
Appendix I – Shield resistance of cables with metallic symmetric
conductors
Appendix II – Algorithm for computer code
Appendix III – Collection area for flashes near a telecommunication
line
Appendix IV – Examples of calculation
IV.1
Italian survey
IV.2
Japanese survey
IV.3
German survey
IV.4
American survey
IV.5
Final remarks
Bibliography