(IEC 60099-4), gapped designs rated 52 kV and below (IEC 60099-6), and externally gapped line arresters (EGLA) (IEC 60099-8). Asset Management Section
In the world of international standards, "UPD" usually refers to an amendment or an updated edition. Why do these updates happen? Because the physics of our grid is changing. iec 600995 pdf upd
: Provides a detailed comparison between former line discharge classes and the new charge classification. (IEC 60099-4), gapped designs rated 52 kV and
is marked as under development by the technical committee with an expected forecast publication in late 2029. IEC Webstore Key Review Points of IEC 60099-5:2018 Feature / Factor Standard Guidelines & Coverage Applicability iec 600995 pdf upd