Rec. ITU-T K.142 (11/2019) Lightning protection and earthing of video surveillance systems
Summary
History
FOREWORD
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 Video surveillance systems
     5.1 Reference configurations
     5.2 Need for protection
6 Direct strike protection
     6.1 Lightning protection system
          6.1.1 Protection zone of air-termination system
     6.2 Protection procedures for the installation of the LPS
          6.2.1 Metallic pole
          6.2.2 Non-metallic pole
          6.2.3 Shelter or buildings
          6.2.4 Transmission cables
7 Earthing and bonding
8 Equipment protection
     8.1 The front-end equipment resistibility
     8.2 Surveillance centre resistibility
9 SPD requirements
     9.1 AC SPD used for front-end equipment
     9.2 Signal SPD
     9.3 MSPD used for surveillance centre
10 Protection scheme
     10.1 Front-end equipment protection
     10.2 Transmission line protection
     10.3 Optical fibre protection
     10.4 AV signal line protection
Annex A  Video surveillance system classification
     A.1 Analogue video surveillance systems
     A.2 Hybrid digital- analogue video surveillance system
     A.3 Digital video surveillance system (also called an IP-based system)
     A.4 Cable wiring diagram of video surveillance outdoor equipment
Appendix I  Practical earthing procedures for a video surveillance  system for front-end equipment
     I.1 Introduction
     I.2 Using neighbour structure earth network
     I.3 Ring earth grid
     I.4 Earth network along an optical cable trench
     I.5 Using copper coated steels or chemical electrodes in an earth network
Bibliography