). 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)

The IEC 60099-5 PDF is a standard published by the International Electrotechnical Commission (IEC) that outlines the requirements for surge arresters used in electrical power systems. Specifically, this part of the standard (Edition 2.0, 2018-03) focuses on surge arresters for grids with nominal voltages above 1 kV.

It provides recommendations for the selection and application of surge arresters for the protection of AC electrical systems against overvoltages (typically caused by lightning or switching operations).

The most recent and current edition of is the third edition (Edition 3.0)

: The update provides step-by-step recommendations for unique scenarios, such as cable protection, transformer neutral protection, and ultra-high voltage (UHV) systems. Asset Management and Diagnostics

: Updates classification to focus on thermal energy and repetitive charge transfer, replacing older line discharge classes.