Descriptors | Electric insulators, Glass, Ceramics, Overhead power-line fittings, Overhead power lines, Electric power transmission lines, Pin insulators, Railway electric traction equipment, Railway fixed equipment, Overhead contact lines, Marking, Electrical testing, Impulse-voltage tests, Post insulators, Interruption tests, Environmental testing, Artificial weathering tests, Type testing, Seatings, Heating tests, Mechanical testing, Thermal-shock tests, Porosity, Galvanizing, Burst tests, Railway equipment, Electrical components Railway applications |