Table of Contents

1 Scope

2 References

3 Definitions

3.1......... Terms defined elsewhere

3.2......... Terms defined in this Recommendation

4 Abbreviations and acronyms

5 Conventions

6 Conditions of telecommunication installations and overvoltages to be considered for safety requirement

6.1......... Power, telecommunication and bonding lines connected to surge protective devices and equipment

6.2......... Causes of electrical human hazards

6.3......... Hazards relating to accessible parts on installations and equipment

7 Safety requirements relating to surge suppressors in telecommunication equipment

7.1......... Surge suppressors bridging telecommunication line and earthing

7.2......... Surge suppressors bridging mains and earthing

7.3......... Surge suppressors bridging between primary circuit and telecommunication line

7.4......... Coordination between SPDs

Annex A – Transmission of TOV

Bibliography