SN EN 62305-3 : 2006

INTRODUCTION
1 Scope
2 Normative references
3 Terms and definitions
4 Lightning protection system (LPS)
  4.1 Class of LPS
  4.2 Design of the LPS
  4.3 Continuity of steelwork in reinforced
      concrete structures
5 External lightning protection system
  5.1 General
  5.2 Air-termination systems
  5.3 Down-conductor systems
  5.4 Earth-termination system
  5.5 Components
  5.6 Materials and dimensions
6 Internal lightning protection system
  6.1 General
  6.2 Lightning equipotential bonding
  6.3 Electrical insulation of the external LPS
7 Maintenance and inspection of an LPS
  7.1 Application of inspections
  7.2 Order of inspections
  7.3 Maintenance
8 Protection measures against injury to living beings
  due to touch and step voltages
  8.1 Protection measures against touch voltages
  8.2 Protection measures against step voltages
Annex A (normative) Positioning the air-termination system
Annex B (normative) Minimum cross-section of the entering
                      cable screen in order to avoid
                      dangerous sparking
Annex C (informative) Partitioning of the lightning current
                      amongst down-conductors
Annex D (informative) Additional information for LPS in the
                      case of structures with a risk of explosion
Annex E (informative) Guidelines for the design, construction,
                      maintenance and inspection of lightning
                      protection systems
Bibliography

Gives the requirements for protection of a structure against physical damage by means of a lightning protection system (LPS), and for protection against injury to living beings due to touch and step voltages in the vicinity of an LPS.