Starting performance of high-frequency electronic ballasts for 4-foot flourescent lamps. J-0468.

Ji, Yunfen. Davis, Robert G.

1995

SEPARATA
693

With the rapidly increasing number of electronic ballast manofacturers and ballast products entering the market recently, the compatibility of flourescents lamps with electronic ballast has become one of the major concerns among specifiers and und users. In 1993 the American National Standars Institute(ANSI) published C82.11-1993, which describes recommendations for high-frecuency operation of flourescent lamp ballast. To address compatibility issues for lamps starting, ANSI C82.11 limitis the average value of rms glow current to a maximum of 25 milliamps and lamp preheat time to a minimum of 500 milliseconds. The ANSI's definitions of glow current and preheat time are made on an ideal lamp starting curve. In reality, some electronic ballast produce lamp starting curves very different from ANSI's definition, creating difficulties in practical measurements of glow current and preheat time. This research work tested lamp starting characteristics of 17 different elctronic ballast on 2-F40T12 lamps. The result showed that the starting performance of electronic ballast varied: some met ANSI's requirements, but some did not. The results also showed That using electrode that using electrode voltage can better define preheat time and glow current wich can better characterize the starting performance of electronic ballast, and ensire reliable testing procedures..

Presenta gráfs.

GENERAL; BALASTROS ELECTRONICOS; LAMPARAS FLUORESCENTES; PRUEBAS;