Indoor Furnishings User Manual

2.9 Various application elements
2.9.1 CE Marking
All Philips fluorescent lamps comply with the EU Low Voltage
Directive (73/23/EEC) and are therefore CE marked.
2.9.2 UV radiation
Fluorescent lamps radiate a very low amount of UV.So this is no
issue regarding effects on human eyes and skin.
Another effect of UV is the risk of colour fading of the illuminated
goods.This fading risk depends on:
- the materials used in the illuminated object
- the illumination level
- the emitted UV of a light source.
For ‘TL’5 lamps the UV damage is generally no issue due to very
low UV radiation.See the table below.for specific values regarding
UV radiation and ‘D
fc
’.
2.9.3 IR radiation
In general fluorescent lamps radiate a very low amount of IR radia-
tion.Nevertheless to avoid problems it is recommended not to use
remote controls at 36 kHz.
2.9.4 Explosion risk
Fluorescent lamps are low-pressure gas-discharge lamps which
operate at relatively cool temperatures.These lamps are not
subject to specific risks of explosion as known for some types of
high pressure lamps and should be regarded in this respect as
identical to the well-known ‘TL’D lamps.
2.10 Lamp end-blackening
A limited degree of lamp blackening during lamp life is normal and
unavoidable.The blackening is caused by a thin layer of electrode
material deposited during life on the inner wall of the discharge
tube. However,accelerated blackening can occur when the gear
does not provide the right (pre)heating currents (either too low
or too high).
Colour UV-A UV-B UV-C UV total D/fc PET*
µW/lm µW/lm µW/lm µW/lm klx•h
28W/827 58,1 15,5 0 73,6 0,20 30
/830 50,7 11,3 0 62,0 0,19 39
/835 47,8 9,0 0 56,8 0,19 39
/840 38,1 6,0 0 44,1 0,19 72
/850 33,0 4,1 0 37,1 0,19 92
/865 23,5 2,1 0 25,6 0,20 204
2000-11-07
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2.11 Optical opportunities with ‘TL’5 lamps
The smaller diameter of ‘TL’5 lamps allows substantially down
scaling of the optics to obtain smaller luminaires with the same
efficiency and light distribution as the original ‘TL’D luminaire as
indicated below in Fig.2.2.
This is ideal in cases where the size of the luminaire is more
critical than the efficiency.
In luminaires which are already (too) compact for ‘TL’D lamps and
hence have a low efficiency, replacing the ‘TL’D lamps by ‘TL’5 lamps
will result in less obstruction of the lamp itself in the luminaire
which will lead to a higher efficiency as is indicated in Figure 2.3.
Another option is to use the smaller lamp diameter to improve the
optical control in the same reflector size as for ‘TL’D as shown
above.This is particularly valuable if narrow or explicit beams are
required e.g. in wall-washing, panel-lighting, high bay lighting,etc.
An example of the effect of lamp size on the optical properties in
the same reflector (originally designed for ‘TL’D lamps to give
rather small light distribution) with ‘TL’5 and ‘TL’D lamps is given in
the following table and the resulting light distributions are given in
Figures 2.4 and 2.5.
Figure 2.2
Typical ‘TL’D luminaire Typical ‘TL’5 luminaire
Figure 2.3
Original ‘TL’D luminaire Same luminaire with ‘TL’5