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New Edition of IEC 60099-9 Published

lightning arrester

A new edition of IEC 60099-9 has been published by the International Electrotechnical Committee. IEC 60099-9 applies to “Surge arresters – Part 9: Metal-oxide surge arresters without gaps for HVDC converter stations.”  The new edition is available on the IEC website.

Description*

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IEC 60099-9:2014 applies to non-linear metal-oxide resistor type surge arresters without spark gaps designed to limit overvoltages in HVDC converter stations of two terminal, multiterminal and back-to-back type up to and including an operating voltage of 1 100 kV. The standard applies in general to porcelain-housed and polymer-housed type arresters but also to gas-insulated metal enclosed arresters (GIS-arresters) solely used as d.c. bus and d.c. line/cable arresters. Arresters for voltage source converters are not covered. Arresters applied on the a.c. systems at the converter station and subjected to power-frequency voltage of 50 or 60 Hz principally without harmonics are tested as per IEC 60099-4. The arresters on a.c.-filters are tested according to this standard.”

*Description from IEC website

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