outdoor post insulator FEATURES Gray composite outdoor post insulator. It has a berglass core with good mechanical characteris cs while the external surface is made of weatherproof silicone rubber. It can be used in highly polluted environments (D Level – IEC 60815) thanks to increased creepage distance. Used as support for outdoor Medium Voltage STANDARDS IEC 62231, IEC 61952, IEC 60507, Enel GSTP001 (former DS 3170) ROUTINE TESTS • Visual and dimension check • Bending stress • Power frequency withstand and wet) • Dry ligh ng impulse voltage • STL • Voltage withstand test with salt fog (224 kg/m3 ) Light ing impulse voltage withstand Power frequency voltage withstand Creepage distance