�1���
�Scope�
�2��� �References�
�3��� �Definitions��
�4��� �Reference configuration����
�5��� �Expected risk of damage��
������ �5.1��� �General��
������ �5.2��� �Frequency of damage to
cables������
������ �5.3��� �Frequency of damage to
structures that the cable enters������
������ �5.4��� �Parameters for the
evaluation of the frequency of damage���
�6��� �Determination of failure
current (Ia)�����������
������ �6.1��� �Lightning discharges
to cables��������
������ �6.2��� �Lightning discharges
to structures where the cable enters�����
�7��� �Protection procedures������
������ �7.1��� �General principle����
������ �7.2��� �Protective measures
against flashes to lines�
������ �7.3��� �Choice of the cable
������ �7.4��� �Buried or aerial
installation�
������ �7.5��� �Use of surge
protective devices (SPDs)������
������ �7.6��� �Shielding wire and
lightning protective cable or metal conduit����������
������ �7.7��� �Route redundancy��
Annex A � Evaluation of the sheath breakdown current��� �
������ �A.1��� �Buried cable���������
������ �A.2��� �Aerial cable����������
������ �A.3��� �Buried or aerial cable
with SPDs between conductors and the shield for direct flashes to the structure
where the cable is entering��� �
Appendix I � Tests for the evaluation of surge resistibility
of cables��� �
������ �I.1��� ��� Breakdown voltage
(Ub)��
������ �I.2��� ��� Test current (It)
for buried cable���
������ �I.3��� ��� Test current (It)
for aerial cable�����
Appendix II � Expected loss per damage (L)��� �
Appendix III � Examples of application��� �
���� �III.1��� �Telecommunication line
with shielded and unshielded sections in suburban environment��� �
���� �III.2��� �Telecommunication line
with only shielded sections in suburban environment
���� �III.3��� �Telecommunication line
with shielded and unshielded sections in rural environment���
Bibliography��� �