I-VALO XENRE XE80 Notice D'utilisation, D'installation Et De Maintenance page 22

EN
D
L70/B50
50,000 hrs
4000 K
Ra80
3 SDCM
22
I-VALO OY
D rating, the surface temperature of the luminaire is restricted (a maximum of 90ºC in
areas where dust may accumulate)
Luminous flux deterioration / light source longevity; after 50.000 hours, 50% of the luminaires
have a luminous flux of ≥70% of that of a new product (IEC 62722-2-1). Accordingly e.g. L80/
B10; after 50.000 hours, 90% of the luminaires have 80% of the initial luminous flux left. It
should be noted that ambient temperature affects the light output as well as the lifetime
of leds.
Colour temperature (CCT), K
Colour rendering index (CRI), Ra
Standard deviation colour matching of the LED light, or the so-called MacAdam value.
The MacAdam scale is 0 to 10. The lower the value, the fewer colour differences there are.
The recommendation for most indoor spaces is 3 to 5, and for outdoor lighting, 5 to 7.
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