Pdf //top\\ — Iec 62305-3
(defined by the Class of LPS) is rolled over the structure. Wherever the sphere touches the building, protection is required, and an air-termination conductor must be placed. Areas untouched by the sphere are considered safe zones. 2. The Protective Angle Method
Previously found in an annex, the standard now offers two clarified methods (general and simplified) for calculating the separation distance—the required gap between the LPS and other conductive elements to prevent dangerous sparking. iec 62305-3 pdf
This method is ideal for protecting flat, expansive roof surfaces. Conductors are arranged in a grid pattern across the roof. To ensure complete protection, the grid spacing must not exceed the maximum mesh dimensions specified for the designated Class of LPS (e.g., for Class I). Down-Conductors and Earthing Requirements Down-Conductor Spacing (defined by the Class of LPS) is rolled over the structure
A ring conductor buried around the perimeter of the structure (highly recommended for electronic-rich structures or poor soil conditions). 3. Internal Lightning Protection and Equipotential Bonding Conductors are arranged in a grid pattern across the roof
