OS GSO IEC 60099-8:2021
IEC 60099-8:2011
Omani Standard
Current Edition
·
Approved on
01 July 2021
Surge arresters - Part 8: Metal-oxide surge arresters with external series gap (EGLA) for overhead transmission and distribution lines of a.c. systems above 1 kV
OS GSO IEC 60099-8:2021 Files
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OS GSO IEC 60099-8:2021 Scope
IEC 60099-8:2011 covers metal-oxide surge arresters with external series gap (externally gapped line arresters (EGLA) that are applied on overhead transmission and distribution lines, only to protect insulator assemblies from lightning-caused flashovers. This standard defines surge arresters to protect the insulator assembly from lightning-caused overvoltages only. Designs with the EGLA's external series gap installed in parallel to an insulator are not covered by this standard.
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