Iec 600995 Pdf Link -

: Applies to gapless metal-oxide arresters, gapped structures (rated is less than or equal to 52 kV), and externally gapped line arresters (EGLA). Major Updates

: This edition aligns selection practices with the new surge arrester classification system introduced in IEC 60099-4:2014. iec 600995 pdf link

The standard provides a technical framework for several vital areas: : Applies to gapless metal-oxide arresters