Metal Halide Lamp金鹵燈

Metal Halide Lamp  /  MH Series    金鹵燈 High-efficiency metal halide lamps combining the high luminous efficacy, compact arc and excellent colour characteristics required in a variety of applications. MHK lamps are designed with sure-grip end knobs with cup springs, and have a special heat-resistant bond between the bulb and the caps. They can be operated on an AC electronic power supply as well as on a magnetic ballast-igniter combination. The run-up time is three minutes. Hot re-ignition is possible with a high voltage peak. In view of their high internal working pressure, these lamps must only be operated in closed luminaires. They radiate a considerable amount of ultra-violet. The luminaire lenses must block this, and no radiation must be spilled through ventilation slots. 工作原理 電弧管內充有汞、惰性氣體和一種以上的金屬鹵化物。 工作時，汞蒸發，電弧管內汞蒸氣壓達幾個大氣壓（零點幾個兆帕 0.019～0.0266MPa）； 金屬鹵化物燈僅靠觸發電極的作用是不能可靠啟動的，一般採用雙金屬片啟動器，或者採用有足夠高啟動電壓的漏磁變壓器，也有採用電子觸發器的。金屬鹵化物燈的點燃還需要限流器（即鎮流器），其工作電流比同功率高壓汞燈的要大一些。