: It includes updated procedures for insulation coordination, helping designers define arrester ratings and residual voltage limits for substations and lines.
Applies to gapless metal-oxide arresters ( IEC 60099-4 ), gapped designs for 52 kV and below ( IEC 60099-6 ), and externally gapped line arresters (EGLA, IEC 60099-8 ). iec 600995 pdf upd
This guide outlines the critical updates in the standard, the transition from older classifications, and how to access the latest documentation for compliant system design. and externally gapped line arresters (EGLA
The updated IEC 60099-5 standard introduces several significant changes and enhancements, including: the transition from older classifications