Specifically Externally Gapped Line Arresters (EGLA) defined in IEC 60099-8 . 2. Key Updates in the Latest Edition (Edition 3.0)
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) . iec 600995 pdf upd
Including series and parallel gapped arresters rated ≤is less than or equal to 52 kV per IEC 60099-6 . As of early 2026, the current active version
The IEC 60099-5 standard provides non-mandatory but highly recommended guidelines for the selection of surge arresters in three-phase systems with nominal voltages . It covers several specific arrester technologies: Gapless Metal-Oxide (MO) Arresters: Defined in IEC 60099-4 . As of early 2026
These new sections provide direct comparisons and mathematical formulas to convert old line discharge classes into modern charge classifications.
Selection workflows now place heavier emphasis on maximum residual voltage as the primary parameter for insulation coordination.