: The standard offers guidance on the installation and application of surge arresters, including their placement in power systems, such as substations and transmission lines.
The 2018 version (Edition 3.0) represents a significant technical revision over the 2013 edition. Major highlights include: IEC 60099-5:2018
You can often purchase the same standard through your country's national standards body. This might be cheaper or faster depending on your location and memberships. For example: iec 600995 pdf link
The standard underwent a profound technical structural shift in its third edition. The core driver was aligning selection guidelines with the fundamental modifications introduced in the hardware standard, which permanently dismantled the long-standing "Line Discharge Class" mechanism. Key Feature / Metric IEC 60099-5:2013 (Second Edition) IEC 60099-5:2018 (Third Edition) Arrester Classification Basis Line Discharge Classes (Class 1 through 5). Thermal Charge ( Qthcap Q sub t h end-sub ) and Repetitive Charge ( Qrscap Q sub r s end-sub Switching Surge Metrics Expressed strictly via kinetic energy calculations ( Calculated through physical charge transfers ( ) during line switching. Annex Focus Area Focused on standard energy evaluation parameters.
: You can find the full document details and purchase options on the IEC 60099-5:2018 page . : The standard offers guidance on the installation
Understanding IEC 60099-5: The Essential Guide to Surge Arrester Selection and Application
[ IEC Surge Arrester Eco-System ] │ ┌───────────────────────────┼───────────────────────────┐ ▼ ▼ ▼ IEC 60099-4 IEC 60099-6 IEC 60099-8 (Gapless Metal- (Internal Series/ (Externally Gapped Oxide Arresters) Parallel Gapped) Line Arresters) │ │ │ └───────────────────────────┬───────────────────────────┘ ▼ IEC 60099-5 (Selection & Application recommendations) Core Scope and Structural Framework This might be cheaper or faster depending on
: Specialized protection for overhead transmission lines, governed by IEC 60099-8. Major Advancements in the Latest Edition (2018)
Measuring resistive leakage current (the most accurate indicator of aging). Using diagnostic indicators for monitoring degradation. IEC 60099-5-2018 (3rd Edition)
