With high -frequency operation the lamp remains continuously lit and provides flicker-free light, which is a significant improvement in terms of visual comfort. Luminous ripple also occurs at high frequency, which greatly reduces the risks involved in working with rotating machinery (Stroboscopic Effect). With high-frequency operation, power consumption at the lamp for the same light output is approx. 7 - 11% lower than with conventional operation (higher system efficiency).
Compensation and ignition
Electronic ballasts incorporate compensation and ignition gear (P.F. approx. 0.95), which ensures a gentle lamp start without irritating flicker. The drop in luminous flux is reduced and lamp life is increased by up to 30-50%. At the end of lamp life theelectronic ballast switches the system off after 1 - 3 min., and thus puts a stop to the wasteful and annoying attempts at reignition. All together electronic ballasts offer up to 30% energy savings compared with conventional ballasts.
Lighting management and control
Electronic ballasts can be dimmed by reducing the supply voltage (transformer) or by phase-angle control Dimmer. Lamp start is possible from a dimming level of approx. 55%.
Metal halide lamps
Metal Halide Lamps can also be run with electronic ballasts. The advantages are similar to those relating to fluorescent lamps. In addition a consistent color appearance can be maintained in spite of fluctuations in the mains voltage.
With electronic ballasts, service life is much longer than lamp life. In principle all fluorescent lamps can be operated with an electronic ballast, but only lamps without an integrated starter should be used (Compact Fluorescent Lamps with 4-pin base).
The markings of the various national testing institutes (VDE, ÖVE, KEMA etc.) indicate that the product meets the prescribed standards of engineering and safety.