The search for a "patched" version of IEC 60099-5 likely refers to the IEC 60099-5:2018 Redline Version (RLV)
The selection practices were updated to match the new surge arrester classification system introduced in the related IEC 60099-4 standard. Energy and Charge Estimation: iec 600995 pdf patched
The transition from the 2013 to the 2018 edition introduced several vital changes designed to improve how we calculate and verify arrester performance: The search for a "patched" version of IEC
The standard provides guidance for several types of modern protective equipment: Metal oxide surge arresters : These are the
Disclaimer: Please note that the patched PDF guide is for informational purposes only. For official or commercial use, please obtain a copy of the standard from the IEC or other authorized sources.
IEC 60099-5 standard provides comprehensive guidance for the selection and application of surge arresters in three-phase electrical systems with nominal voltages above 1 kV