DIN EN 60099-9:2015-08

This part of the IEC 60099 series of standards 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 1100 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 which are used in the AC system of a power converter station and which are subjected to AC voltage at a frequency of 50 Hz or 60 Hz, that is in principle without harmonics, shall be tested in accordance with IEC 60099-4. AC filter arresters shall be tested according to this standard. The standard does not apply to arresters for industrial converter equipment and railway applications. The responsible committee is DKE/K 441 "Überspannungsableiter" ("Surge arresters") of the DKE (German Commission for Electrical, Electronic and Information Technologies) at DIN and VDE.