IEC 60099-5 is an international standard published by the International Electrotechnical Commission (IEC). It is part of the IEC 60099 series, which covers surge arresters.
Seminar Edition 2024: Industry experts like Volker Hinrichsen released updated "Seminar Editions" in late 2024/early 2025 to help users navigate the transition between old line discharge classes and new charge-based classifications. International standard IEC 60099-5:2018 - Afnor EDITIONS iec 600995 pdf upd
The most recent and current edition of IEC 60099-5 is the third edition (Edition 3.0) Guide to IEC 60099-5: Surge Arresters – Selection
If you ignore the "UPD" and stick to an old PDF, you risk designing a protection scheme that is "code compliant" but practically inadequate for a modern, dynamic grid. Seminar Edition 2024 : Industry experts like Volker
). Its primary goal is to ensure that arresters can withstand the electrical stresses of a system while protecting equipment from overvoltages like lightning and switching surges. IEC Webstore 2. Key Updates in the Latest Edition (2018)