China manufacturer of magnetic ballasts for metal halide flood lights & hps flood lights

In order to High pressure sodium ballasts meet the performance requirements of the lamp, the lamp voltage within the range of from 95 to 105% of the arbitrary movements, the lamp voltage of the intersection of the limit line should be within the power limits, and in the entire deviation range of the lamp voltage is always maintainedwithin Fan power deviation. The ideal hydraulic high pressure sodium town: first deviation limit point rise in the lamp voltage and lamp power declines. 250W high pressure sodium lamp, for example in the Figure: Curve A represents a whole during the life of the high pressure sodium lamp, the working voltage is increased, small changes in the lamp power, good ballast performance. Curve B shows that most of the working time of the high-pressure sodium lamp is in an overload state, the ballast performance Poor. Curve C represents prophase in the high-pressure sodium lamp life, working voltage rise, the lamp power up quickly, shorten lamp life; sharp decline late in the lamp life, lamp power and luminous efficiency, also affect the life of the lamp, HID ballast lamp power limit the role of bad ballast performance is poor, and should not be used.