Abstract
The paper presents the results from an experimental investigation of the starting parameters of fluorescent lamps operating with electronic ballasts. Two types of lamps are investigated, T5 tubes and compact fluorescent lamps, operating with three types of ballasts: instant start, rapid start and programmed start type. Five different operating cycles are employed. Starting and operating voltage and current waveforms are recorded at regular time intervals of the lamp life at different starting scenarios. The preheat ratio is also calculated at the end of the preheat time for the systems working with preheating ballasts. This ratio indicates the temperature at the moment of starting, which is critical for the lamp life. Its value in real time is also calculated for each lamp system during the starting period. The signatures of the lamp starting scenarios are discussed and a comparison is given between the different ballast operations. Their potential consequences on lamp life are examined.
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