""Is applicable for the determination of the power frequency withstand characteristics of ceramic and glass insulators to be used outdoors and exposed to polluted atmospheres, on a.c. systems with the highest voltage of the system ranging from 1 000 V up to 765 kV. These tests are not directly applicable to greased insulators or to special types of insulators (insulators with conductive glaze or covered with any organic insulating material).""
DS/EN 60507:2009 history
2009DS/EN 60507:2009 Artificial pollution tests on high-voltage insulators to be used on a.c. systems