This part of IEC 61663 deals with protection against lightning of outdoor telecommunication
lines using metallic conductors (for example, access networks, lines between buildings).
These lines concern
- telecommunication lines connecting a switch with a network termination (NTI);
- telecommunication or signal lines connecting equipment located in different buildings,
e.g. ISDN lines or signal lines between computers.
NOTE In this standard, such lines are called "telecommunication lines"
The object of this standard is to protect telecommunication lines and connected equipment
against the direct and indirect influence of lightning by limiting the risk of damage due to
overvoltages and overcurrents, liable to occur in these lines, to values which are lower than or
equal to the tolerable risk of damage. For more details, see annex A.
The type of building can also have an effect on the risk assessment of lightning damage to
telecommunication lines, as well as the physical layout of the equipment installation.
However, these and other similar aspects are covered by appropriate specific standards and
are beyond the scope of this standard.
Fibre optical cable with metallic pairs in the cable core must be protected, following the
requirements of this standard, together with those requirements defined in IEC 61663-1.
BS EN 61663-2:2001 history
2001BS EN 61663-2:2001 Lightning protection. Telecommunication lines. Lines using metallic conductors