Ключевые слова:
Sodium-vapour lamps, Metal-vapour lamps, Discharge lamps, Electric lamps, Lamps, Lighting equipment, Interchangeability, Type testing, Marking, Dimensions, Testing conditions, Starting, Electrical testing, Electric ballasts, Starters (lamps), Design, Luminaires, Voltage, Electric power (wattage), Rated power, Electric current, Rated frequencies, Rated voltage, Rated current