4.4.Technical data for installation
Mains operation
Rated mains voltage
120–277V, 347–480V,
and 277–480V
Tolerances for safety:
+/– 10%
Mains frequency
50/60 Hz
Power factor
>= 0.99
DC voltage operation (during emergency back-up)
Because of the run up, T5 VHO and HO Extreme Temperature
lamps (and therefore ballast) are not suitable in combination
with emergency situations.
4.5. Switching cycle effects
The rated average lamp life of T5 lamps is negatively affected
when the switching frequency is higher than the IEC cycle
(3 hrs cycle: 2 hours and 45 minutes on, 15 minutes off).
A = 1.18" (30mm)
B = 1.70" (43.2mm)
C = 16.34" (415mm)
D = 16.70" (424.4mm)
Figure 4.1. T5 VHO and T5 HO 4 lamp case dimensions
A = 1.02" (26mm)
B = 1.18" (30mm)
C = 15.65" (397.5mm)
D = 16.34" (415mm)
E = 16.70" (424.2mm)
Figure 4.2. T5 HO 2 lamp case dimensions
OEM Design Guide
Philips T5 VHO and HO Extreme Temperature Lamps and Ballasts
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