The IEC 60099-5 standard is the primary international guide for the selection and application of surge arresters in three-phase systems with voltages exceeding 1 kV. IEC Webstore The latest official edition is IEC 60099-5:2018 (Edition 3.0) IEC Webstore Official Purchase and Access Links
. An overview of the standard, including the table of contents and scope, is available in the technical preview provided by iTeh Standards IEC 60099-5:2018 19 Jan 2018 — iec 600995 pdf link
The IEC webstore offers a preview (first few pages) for free – useful to verify the correct part number. The IEC 60099-5 standard is the primary international
Surge Arrester Types: Applies to gapless metal-oxide arresters, gapped designs (rated up to 52 kV), and externally gapped line arresters (EGLA). It provides detailed instructions on how to apply
The current version, Edition 3.0 (2018), replaces the 2013 edition. It incorporates technical revisions that align selection practices with the new classification system introduced in IEC 60099-4:2014. Key Technical Features