BS EN 61347-2-9. Lamp controlgear. Part 2-9. Particular requirements for control gear for discharge lamps (excluding fluorescent lamps) Electric lamps, Lamps, Electric control equipment, Lighting equipment, Electrical safety, Electric ballasts, Discharge lamps, Gas-discharge lamps, Metal-vapour lamps, Sodium-vapour lamps, Mercury-vapour lamps, Cathode lamps, Electrical testing, Thermal testing, Temperature-rise limit, Rated voltage, Rated frequencies