serves as an essential framework for electrical engineers and utility operators managing three-phase systems with nominal voltages above 1 kV. Rather than specifying manufacturing tests, this standard provides a comprehensive methodology for choosing the correct arrester to protect critical infrastructure from lightning and switching overvoltages. IEC Webstore Evolution and "Patched" Revisions
The selection practices were updated to match the new surge arrester classification system introduced in the related IEC 60099-4 standard. Energy and Charge Estimation: iec 600995 pdf patched