Iec 600995 Pdf Upd 2021 -

The standard, titled "Surge arresters – Part 5: Selection and application recommendations," is the definitive global guide for engineers designing and maintaining high-voltage power systems. As of early 2026, the current active version is IEC 60099-5:2018 (Edition 3.0) .

These new sections provide direct comparisons and mathematical formulas to convert old line discharge classes into modern charge classifications. iec 600995 pdf upd

Instead of the old "Class 1 to 5" system, arresters are now classified by their thermal energy dissipation and repetitive charge transfer capability ( Qrscap Q sub r s end-sub The standard, titled "Surge arresters – Part 5:

Annex D was updated to include modern service monitoring techniques, such as leakage current measurement with harmonic compensation. iec 600995 pdf upd