indoor post insulator FEATURES Red epoxy resin post insulator for indoor use with OT58 brass Used as support for indoor Medium Voltage bus bars. Opera ng temperature from -25°C to +100°C. REFERENCE STANDARDS IEC 60273; IEC 60660 ROUTINE TESTS • Visual and dimensional check • Bending stress • Glass transi on temperature TESTS ON DEMAND Ultimate bending stress Power frequency voltage withstand Ligh ing impulse voltage withstand • Power frequency test • Par al discharges measurement • Dry ligh ng impulse test • De ec on under load at normal ambient temperature condi ons • Water absorp on test