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Deep Essay: IEC 62305-3 (Protection against lightning — Part 3: Physical damage to structures and life hazard)
Internal Lightning Protection
: Requirements for equipotential bonding to reduce the risk of fire and electric shock inside a structure.
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- Risk assessment (mandatory start): Identify what’s at risk (people, services, cultural heritage, economic loss) and calculate the required level of protection.
- Protection levels (LPLs): Four levels (I–IV) tying allowed lightning parameters to the design of protection measures.
- Structural protection: Design and placement of air‑termination systems (rooftop receptors), down conductors, equipotential bonding, and earthing systems.
- External lightning protection system (LPS): Components and layout to safely intercept and conduct lightning current to ground.
- Internal lightning protection: Measures inside the structure — equipotential bonding, shielding, surge protective devices (SPDs), separation of conductive parts.
- Surge protection coordination: Selection and placement of SPDs to protect low‑voltage AC/DC systems, signal lines, and telecommunications.
- Installation and maintenance: Inspection intervals, testing of earthing resistance, and upkeep of LPS and SPDs.
IEC 62305-3
In the realm of electrical engineering and building safety, few documents carry as much weight and critical importance as . Deep Essay: IEC 62305-3 (Protection against lightning —
