Used for overhead transmission/distribution line protection (IEC 60099-8). 2. Key Technical Changes in 2018 Edition
The IEC 60099 series is divided into multiple parts, each covering a specific type of surge arrester or application.
IEC 60099-5:2018 .
Note: The BSI version (BS EN IEC 60099-5:2018) is identical to the international IEC 60099-5:2018 standard. Summary of Key Application Steps
The standard has evolved across three major editions to match rapid advancements in power electronics, materials science, and substation engineering. iec 600995 pdf
New sections (Annexes H and I) were added to help users transition from old classifications to the new charge-based metrics. Expanded Calculations:
Salt spray, industrial dust, and heavy coastal moisture cause uneven surface voltage distribution across the housing. IEC 60099-5:2018
: Includes expanded information on asset management and diagnostic tools for monitoring the condition of arresters in service. Accessing the PDF
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In modern power systems, protecting high-voltage equipment from transient overvoltages—such as lightning strikes or switching surges—is paramount to reliability. The is a critical international technical report that provides comprehensive guidelines for selecting and applying surge arresters, specifically focusing on metal-oxide arresters without gaps, as defined in IEC 60099-4 .