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: The current version is IEC 60099-5:2018 (Edition 3.0) , which replaced the 2013 version to align with updated arrester classifications. Key Topics Covered : Selection criteria for metal-oxide surge arresters (MOSA). Insulation coordination and installation practices.
Deploying a surge arrester correctly requires rigorous life-cycle monitoring, as degradation can turn a safety device into a phase-to-ground fault hazard. The standard provides practical field diagnostics: