Philips PLUST8 U-Ben t Lamps featuringALTO®LampTechnologyOrdering,Electrical and TechnicalDataColor Nom. RatedAverageLife(Hrs.)1Approx.
Product Ordering Pack. Temp. Length 12-hron 12-hr on Initial Design Lumen
Number Code Watts Qty. (Kelvin) (In.) Ins.Start2Prog.Start2Lumens3Lumens4CRI Maint.
21977-4 FB32T8/TL830/PLUS/6/ALTO 32 20 3000 227⁄16 30,000 36,000 2800 2535 85 95%
21978-2 FB32T8/TL835/PLUS/6/ALTO 32 20 3500 227⁄16 30,000 36,000 2800 2535 85 95%
21983-2 FB32T8/TL841/PLUS/6/ALTO 32 20 4100 227⁄16 30,000 36,000 2800 2535 85 95%
21987-3 FB32T8/TL850/PLUS/6/ALTO 32 20 5000 227⁄16 30,000 36,000 2750 2500 84 95%
1)Rated average life is the length of operation (in hours) at which point an average of 50% of a large sample of lamps will still be operational and 50% will not.
2)Average life under engineering data with lamps turned off and restarted once every 12 oper ating hours. Lamp life is appreciably longer if lamps are started less frequently.
3)Approximate initial lumens.The lamp lumen output is based upon lamp performance after 100 hours of operating life, when the output is measured during operation on a reference ballast
understandard laboratory conditions. For expected lamp lumen output, commercial ballast manufacturers can advise the appropriate ballast factor for each of their ballasts when they are
informedof the designated lamp.The ballast factor is a multiplier applied to the designated lamp lumen output.
4)Design lumens are the approximate lamp lumen output at 40% of the lamp’s rated average life.This output is based upon measurements obtained during lamp operation on a reference
ballastunder standard laboratory conditions.
BASED ON 3 HOURS PER START5
InstantStar t Ballast ProgrammedStar t Ballast
24,000
30,000
30,000
36,000
BASED ON 12 HOURS PE R START2
0 10,000 20,000 30,000 40,000
RatedAverage Life in Hours
PhilipsPLUS T8 U-Bent Lamps
5)Average life under specified test conditions with lamps turned off and restarted no more frequently than
onceevery 3 operating hours. Lamp life is appreciably longer if lamps are started less frequently.
2)See above for footnote
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