Descriptors | Electric insulators, Overhead power-line fittings, Overhead power lines, Electric power transmission lines, Voltage, Rated voltage, Withstand voltage, Frequencies, Alternating current, Alternating-current power transmission, Electric substations, Electrical properties and phenomena, Mechanical properties of materials, Ceramics, Dimensions, Diameter, Strength of materials, Marking, Designations, Tolerances (measurement), Design, Leakage paths, Pollution, Length |