1 Introduction
2
Scope
3
Definitions
4
Characteristics of protective components
5
Origin of overvoltages and overcurrents
6
Strategies for protection of telecommunication systems
7
Desirable electrical characteristics
7.1 Normal operation of the system
7.2 SPD operating conditions
7.3 Current-limiting devices
7.4 Isolating devices
8
Failure modes
8.1 Clamping devices
8.2
Current-limiting device
9
Location and mounting of SPDs
10 Safety aspects
11 General aspects on costs for
installation and maintenance