Ключевые слова:
Electric ballasts|Testing conditions|Power factor|Test equipment|Lamp caps|Ignition voltage|Electric current|Shape|Rated power|Rated frequencies|Rated current|Rated voltage|Circuits|Voltage|Metal-vapour lamps|Gas-filled lamps|Dimensions|Photometry (light measurement)|Red|Electrical testing|Lamps|Marking|Lighting equipment|Electric lamps|Mercury-vapour lamps