Glossary general CCT Color temperature in Kelvin CRI (Ra) Colour Rendering Index DALI Digital Adressable Lighting Interface Efficacy lm/W Amount of light produced (lm) per unit of energy consumed (W) IK Impact resistance Input current The maximum, instantaneous input current drawn by an electrical device when first turned on Inrush Current The maximum current that will occur during a short period of time after switching on of the luminaire. IP Ingress Protection Rating L70 Rated Median Useful Life during which LED based luminaires have their luminous flux degraded to 70 % (L70) of their initial flux, but are still operating lm lumen luminous flux lx lux lumen/m2 Power factor (pf) Difference between power and apparent power Displacement factor (DF) The phase shift between voltage and current at the fundamental line frequency (cos φ) SDCM standard deviation of color matching UGR Unified Glare Rating Glare reduction Glossary Opple - abbreviation 100pct 100 procent 3C-P 3 phase track performer AL Aluminum AS Asymmetric beam angle BA Brushed aluminum B Basic BL Black BL Blister CL Clear CT Carton Dim Dimmable D/I Direct / Indirect DF-DZ Diffusor version (trunking) DT8 Device type 8 E2 / HQ2 / G2 2nd Generation EM1 / EM3 Emergency lighting 1 hour / 3 hours FR Frosted G Grille Glossary Version April 2024 Data subject to change 210
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