Protection against lightning - Part 3: Physical damage to structures and life hazard
1Key Takeaways
The scope of this part of IEC 62305 specifies requirements for protecting structures against physical damage from lightning, using lightning protection systems (LPS), and for preventing human injury due to touch and step voltages in the vicinity of such systems. LPS is regarded as the primary and most effective means o…
2Scope / Description
The scope of this part of IEC 62305 specifies requirements for protecting structures against physical damage from lightning, using lightning protection systems (LPS), and for preventing human injury due to touch and step voltages in the vicinity of such systems. LPS is regarded as the primary and most effective means of safeguarding structures and their interior components from physical damage. Typically, an LPS comprises external and internal lightning protection subsystems. The external subsystem is designed to:
- intercept lightning strikes hitting the structure (using air-termination devices),
- conduct the lightning current safely to earth (via down-conductor systems), and
- dissipate the lightning current in the ground (through an earthing system).
This part of IEC 62305 applies to:
(a) the design, installation, inspection, and maintenance of lightning protection systems for structures, regardless of building height;
(b) the preparation of measures to protect people from injury caused by touch and step voltages.
This international standard has been adopted as EN IEC 62305-3:2024 in Europe without any modifications.