1
Scope
2 References
3 Definitions
4 Reference configurations
5 General requirements
5.1 Insulation withstand
voltage levels
5.2 Selection of SPD
6 Characterization of the
environment
6.1 Environmental factor (Ce)
and exposure factor (Kx)
6.2 Installation factor (Ki)
6.3 Shielding factor
(η)
6.4 Conventional length
7 Bonding procedures
7.1 Exchange (node E)
7.2 Outside plant (nodes
R, P, C and D)
7.3 Subscriber premises
(nodes S)
8 Surge protective devices (SPDs)
8.1 Installation of surge
protective devices (SPDs)
8.2 Assessment of the
node's protection need
8.3 Determination of the
protection schemes
Annex A – Requirements for SPDs installed between conductors
and cable shield
A.1 General
A.2 Length of cable
protected by SPDs
A.3 Resistance value of
the cable shield connection to earth along the telecommunication line
Appendix I – Frequency of damage (FZ) due to
lightning flashes near a telecommunication line
Appendix II – Shield resistance for cables with metallic
symmetric conductors
Appendix III – Risk assessment related to a structure: Information related to the
telecommunication line
Appendix IV – Examples of application
IV.1 Telecommunication line
with shielded and unshielded sections in suburban environment
IV.2 Telecommunication line
with only shielded sections in suburban environment
IV.3 Telecommunication line
with shielded and unshielded sections in rural environment
Bibliography