Lamp Life When purchasing a new light source or replacement bulb, lamp life is a very important consideration. Unfortunate ly purchasers often do not understand exactly what is meant by "lamp life". There are two very different and distinctive terms that describe life: "rated life" and "economic life". Rated Life Rated average life for metal halide lamps is defined as: value of lamp life expectancy based on laboratory tests of representative lamps, burning at rated volts, on an approved system, operating with a burning cycle of ! hours per start. The "average life" is determined when #$ of the lamps initially installed are still operating. %arious operating conditions can affect the average life of lamps. &ne of the most important factors is burning position. 'osition(oriente d lamps )designed to burn in a certain position* are tested and rated based on their designated
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7/24/2019 Lamp Life - Burning Cycle
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