Lightning protection is protection against fire and, above all, personal injury. Lightning protection systems form a protective sheath around the building by intercepting direct lightning strikes and discharging them to the ground.
External lightning protection is covered by the IEC 62305 standard. The external lightning protection system can be implemented in the form of a:
- Conventional lightning protection system
- Isolated lightning protection system (e.g. HVI Lightning Protection)
HVI Lightning Protection
HVI Lightning Protection means a high-voltage-resistant insulated down conductor which, in combination with adequate supporting tubes and air-termination rods, forms an isolated lightning protection system.
What is special about this down conductor is that the lightning current carrying conductor is wrapped with a semi-conductive insulating material so that the required separation distance - from other conductive building parts or electric lines and pipes - is easily kept.