The Lighting Handbook ZG

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Vydal: ZG Lighting Czech Republic s.r.o

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The maximum deviation may –10% (tolerance).73 The Lighting Handbook Light output, output and luminous efficacy The light output, output and luminous efficacy are important key parameters to describe the efficiency LED luminaires. Rated output LED luminaires Initial input power luminaire (W). The operating efficiency not normally shown separately for LED -luminaires. This takes into account the fact that minor fluctuations may occur between the individual measured values during the production period luminaire type consequence of production conditions. Constant light output If constant light output technology used, the light output luminaire remains constant over the lamp life. The maximum deviation may +10% (tolerance). This maximum input power corresponds to the initial value with maximum light output. This information contains the losses the light- deflecting and light-shielding components of the luminaire and thus the effect the operating efficiency the luminaire. The luminaire manufacturer has specify these parameters for all their luminaires. Luminous efficacy LED luminaires Initial value for the ratio light output to input power (lm/W). Important LED key figures . ATTENTION: The light output and luminous efficacy for built-in LED modules are higher than those the luminaires, that these cannot compared with each other. The measured output rises the maximum value relative to the reduction light output the LED type used. Rated light output LED luminaires Initial illuminance the start operation (lm). Unless otherwise specified, the values apply for ambient temperature °C. The values are quoted rated values. Note: CLO: constant light output