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Sustech Technology Ltd

Grounding & Lightning

Lightning Protection Zone

Determine the protection radius of an air termination using the IEC 62305 Rolling Sphere Method. Includes LPL selection guide.

Standards: IEC 62305-3 IEC 62305-2

Lightning Protection Zone — Rolling Sphere (IEC 62305)

Determine the protection radius of an air termination (finial or rod) using the IEC 62305 Rolling Sphere Method. Used for LPS design to verify coverage of rooftop equipment, antennas, and building edges.

Select based on structure risk category per IEC 62305-2 risk assessment.

m

Height of the building to be protected.

m

Height of the finial/rod above the roof. Typical: 0.3 m – 3 m.

Results will appear here after you calculate.

For estimation purposes only. Results are indicative and based on simplified engineering models. Always consult a qualified engineer before making design or investment decisions. Sustech Technology Ltd accepts no liability for decisions made based on these calculations.

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