OSRAM QUICKTRONIC INTELLIGENT DIM CFL - Manual (Page 60)

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Figure 42: Power boost and lamp start with HO 24 W CONSTANT
lamp
Functionality of QTi DALI/DIM: Relative luminous flux > 90 %
over an additional expanded temperature range from 0 °C to
+70 °C
Mercury T5 lamps reach their luminous flux optimum at an ambient
temperature of 35 °C – but only if their mercury household is not
influenced by additional electrode heating. The QTi DALI/DIM units,
therefore, have a cut-off, i.e. the electrode heating is switched
off when it is not needed.
It can be shown that, at low ambient temperatures, amalgam lamps
give off more light when the electrodes are heated somewhat.
At high temperatures, however, this effect is reversed. The QTi DALI/
DIM uses its internal temperature sensor in order to switch off
the electrode heating at a sufficiently high temperature.
This means a further increase of the luminous flux of cold amalgam
lamps is achieved: The temperature at which the luminous flux
falls below the 90 % line drops from +5 °C to 0 °C.
Power Boost HO24 CONSTANT
0
1
2
3
4
5
6
7
8
9
10
-20 0 20 40 60 80 100 120 140 160 180 200
Time [s]
ECG power [W] Rel. luminous flux [%]
Neu! New !