The current active version of the standard for surge arrester selection and application is IEC 60099-5:2018 (Edition 3.0). While a 4th edition is currently under development, its forecast publication date is not until September 2029. Core Content of IEC 60099-5:2018
within this standard (such as line switching energy or continuous operating voltage calculations) to help with a project?
As of 2026, IEC 60099-5 Edition 3.0 (2018) remains the current standard, offering guidelines for selecting and applying surge arresters in three-phase systems exceeding 1 kV. This 2018 version, which replaced the 2013 edition, is active and directly aligned with the revised classification system in IEC 60099-4:2014. Key technical updates include: iec 600995 pdf upd
Introduction
By following this guide, you ensure that your surge protection design is based on the most current international best practices. The current active version of the standard for
Special Applications: Enhanced guidance for protecting cable sheaths, rotating machines, capacitor switching, and UHV (Ultra High Voltage) systems. Critical Selection Parameters
Redline Version (RLV): Official distributors like the IEC Webstore and the Standards Council of Canada offer an RLV PDF, which highlights every specific text change between the 2013 and 2018 editions. Scope and Content Overview As of 2026, IEC 60099-5 Edition 3
New Energy Classification: 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