What Are Metal Halide Lamps?

Metal halide lamps are operated by AC power sources. They produce arc discharges in a mixture of mercury and rare metal halide vapors. The metal halide lamp is the third one made by adding various metal halides to the high pressure mercury lamp Generation light source. The lighting is made of limulus sodium metal halide lamp. Metal halide lamp has the characteristics of high luminous efficiency, good color rendering performance and long life. , Industrial plants, street squares, stations, docks and other places.

The biggest advantage of metal halide lamps is that the luminous efficiency is particularly high, and the luminous efficiency is as high as 80 ~ 120Lm / W. Thanks to metal halide lamps

It is suitable for places that require high illumination and good color rendering, such as stadiums, art galleries, exhibition halls, etc. The mixed light method can be used to obtain high light efficiency and improve light color. Suitable for street lighting and bustling street lighting. Spotlight or high pole lighting, high pole lighting can be set at overpasses, squares, stations, docks, etc.

Metal halide lamps should be used in places with high hanging conditions and requiring large area lighting. When the instantaneous fluctuation of the power supply voltage of the gas discharge lamp drops greatly, the lamp will go out by itself. This is especially important for some light sources that cannot be restarted immediately after being turned off. A certain safety factor should be considered so that the instantaneous voltage change of the power grid is not lower than a certain allowable value. Gas discharge lamps mostly use inductive ballasts, and the power factor is less than 1. In the case of large-area gas discharge lamps, in order to save non-ferrous metals and improve the utilization rate of equipment, compensation should be considered to improve the power factor. Generally, it is more convenient to use centralized compensation methods. When selecting the wire cross section and the lighting transformer capacity, not only the electrical power consumed by the light source, but also the loss power of the ballast should be included. ^[3]