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Relative Light Output (%)
AmbientTemperature ˚C
0˚C 10˚C 20˚C 30˚C 40˚C 50˚C 60˚C 70˚C 80˚C
32˚F 50˚F 68˚F 86˚F 104˚F 122˚F 140˚F 158˚F 176˚F
Performance (Relative Light Output vs.Temperature)
Philips T5VHO Extreme Temperature Lamps vs. Standard F54T5 Lamps
Philips T5VHO Extreme Temperature lamps featuring ALTO
®
Lamp Technology
Lamp Ordering, Electrical and Technical Data
Color Nom. Rated Avg.Life (Hrs.)
1
Approx.
Product Ordering Pack. Temp. Length 3 Hr. 12 Hr. Initial Design Lumen
Number Code Watts Qty. (Kelvin) (In.) Start
2
Start
3
Lumens
4
Lumens
5
CRI Maint.
21771-1 F95T5/835/VHO/A/ALTO 95 40 3500 46 25,000 35,000 7200 6900 85 90%
21772-3 F95T5/841/VHO/A/ALTO 95 40 4100 46 25,000 35,000 7200 6900 85 90%
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 specified test conditions with lamps turned off and restarted no more frequently than once every 3 operating hours.Lamp life is appreciably longer if lamps are started less frequently.
3) Average life under engineering data with lamps turned off and restarted once every 12 operating hours on a programmed start ballast. Lamp life is appreciably longer if lamps are started less frequently.
4) 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 high frequency reference ballast under
standard laboratory conditions. For expected lamp lumen output, commercial ballast manufacturers can advise the appropriate ballast factor for each of their ballasts when they are informed of the designated lamp.
The ballast factor is a multiplier applied to the designated lamp lumen output.
5) 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 ballast under
standard laboratory conditions.
This lamp is better for the environment because of its reduced mercury content.All PhilipsALTO
®
lamps give you end-of-life options which can simplify and reduce your lamp disposal costs depending on your state and
local regulations.
Note:T5VHO lamps have new miniature flat pin bases which require new GX5 sockets.
Above specifications subject to change without notice.
Rated Average Life in HoursRated Average Life in Hours
BASED ON 3 HOURS PER START
2
25,000
BASED ON 12 HOURS PER START
3
35,000
Programmed Start Ballast
0 5,000 10,000 15,000 20,000 25,000 30,000 35,000
Rated Average Life
1
Philips T5VHO ExtremeTemperature Lamps
90% Lumen Maintenance
Philips T5VHO ExtremeTemperature Lamps
Footnotes from front page:
* 90% lumen maintenance at 17,500 hours for theT5VHO lamp compared to 65% lumen maintenance at 8000 hours for the MH400/U lamp.
‡ 458 system watts (MH400/U) – 418 system watts (T5VHO) = 40 system watts.
◊35,000 rated average life (T5VHO at 12 hours per start) compared to 20,000 rated average life (MH400/U at 13 hours per start)
** For example, with 7200 initial lumens, you only need (4) 95WT5VHO lamps instead of (6)T5 54W HO lamps when replacing a standard 400W HID System.** For example, with 7500 initial lumens,you only need (4)
95WT5VHO lamps instead of (6)T5 54W HO lamps when replacing a standard 400W HID System.
0 5,000 10,000 15,000 20,000 25,000 30,000 35,0000 5,000 10,000 15,000 20,000 25,000 30,000 35,000
100%
98%
96%
94%
92%
90%
88%
100%
98%
96%
94%
92%
90%
88%
Lamp Operating HoursLamp Operating Hours
Light Output (%)Light Output (%)
New P-5904-A T5 VHO Prod Bulletin.qxd:Layout 1 9/9/08 6:08 PM Page 2