BS EN 60383-1. Insulators for overhead lines with a nominal voltage above 1000 V. Part 1. Ceramic or glass insulator units for a.c. systems. Definitions, test methods and acceptance criteria|Glass, Electric insulators, High voltage, Overhead power lines, Electrical insulation, Impact testing, Electric power transmission lines, Alternating-current power transmission, Quality assurance, Ceramics, Overhead power-line fittings, Visual inspection (testing), Testing conditions, Cyclic loading, Formulae (mathematics), Leakage paths, Galvanizing, Flow charts, Dimensional measurement, Acceptance (approval), Mechanical testing, Thermal-shock tests, Environmental testing, Electrical testing, Pin insulators, Classification systems, Type testing