: This involves catching the strike and safely grounding it. It consists of: Air-termination systems : Rods or mesh that "invite" the lightning. Down-conductor systems
2. Core Components of an External Lightning Protection System (LPS)
Cables that carry the current from the roof to the ground. iec 62305-3 pdf
A lightning protection system degrades over time due to weather exposure and mechanical wear. IEC 62305-3 requires routine technical inspections categorized by LPL:
The new standard provides precise minimum thicknesses for metal sheets or pipes used in air-termination systems. This update includes data on maximum temperature rises (ΔT) to prevent dangerous "hot-spot" problems caused by long lightning strokes. : This involves catching the strike and safely grounding it
IEC 62305-3 defines four Lightning Protection Levels (LPL I through LPL IV). These levels dictate the strictness of the design parameters based on the risk assessment calculated under IEC 62305-2. Lightning Protection Level (LPL) Rolling Sphere Radius Down-Conductor Spacing Typical Application 5 x 5 meters Hospitals, data centers, explosive environments LPL II 10 x 10 meters Commercial properties, historic buildings LPL III 15 x 15 meters Standard residential and office buildings LPL IV 20 x 20 meters Structures with low risk or occupancy 5. Protection Against Touch and Step Voltages
Would you like to know more about lightning protection or the IEC 62305-3 standard? Core Components of an External Lightning Protection System
Disperses the lightning current into the ground. IEC 62305-3 details two arrangements:
The scope of IEC 62305-3 is to provide requirements and recommendations for the design, installation, and maintenance of LPS for structures, buildings, and open areas. The objectives of this standard are: