Ecg lamp – OSRAM QUICKTRONIC INTELLIGENT DIM CFL User Manual
Page 59
58
*)
Not for flashing operation, dimming operation only possible within the scope of a
special release
Figure 41: ECG lamp combinations (amalgam lamps)
Functionality of QTi DALI/DIM: Power boost and amalgam
lamps
The amalgam releases just as much mercury as is required for the
discharge and, as a result, considerably decreases the luminous flux
at high or low temperatures. After a change of the operational mode,
however, it takes a number of minutes until the mercury balance is
discontinued again. If the lamp is switched off for a prolonged period
– no discharge and no mercury requirement – the amalgam collects
all the mercury. On a restart, therefore, there is initially a lack of
mercury which can be detected by the "pink phase“.
If the lamp is dimmed at the same time, its maintaining voltage can
rise to non permitted values and the discharge can become insta-
ble. Here the power boost of the QTi DALI/DIM comes into play: It
automatically increases the lamp power in order to lower the
lamp voltage and to stabilize the discharge phase. Then when
the amalgam has released enough mercury, the lamp power is au-
tomatically reduced again and the lamp can be dimmed nor-
mally.
Also in normal mercury lamps the power boost takes effect and
simplifies dimming during the ignition phase of the lamps as well as for
very low temperatures:
When there are instabilities in the lower dimming level, the Power
Boost regulation helps to stabilize the burning conditions.
T5 T5 T5 T5 CFL CFL CFL CFL CFL CFL CFL
HO 24 W
CONST
ANT
HO 39 W
CONST
ANT
HO 54 W
CONST
ANT
HO 80 W
CONST
ANT
DL
CONST
ANT
DL
CONST
ANT
55 W
DL
CONST
ANT
80 W
D
T/E
IN
PLUS
D
T/E
IN
PLUS
D
T/E
IN
PLUS
D
T/E
IN
PLUS
QTi
DALI
/ QTi (
1…10 V
) 1x14/24 DIM
x
QTi
DALI
/ QTi (
1…10 V
) 1x21/39 DIM
x
x
QTi
DALI
/ QTi (
1…10 V
) 1x28/54 DIM
x
x
QTi
DALI
/ QTi (
1…10 V
) 1x35/49/80 DIM
x
*)
QTi
DALI
/ QTi (
1…10 V
) 2x14/24 DIM
x
QTi
DALI
/ QTi (
1…10 V
) 2x21/39 DIM
x
x
QTi
DALI
/ QTi (
1…10 V
) 2x28/54 DIM
x
x
QTi
DALI
/ QTi (
1…10 V
) 2x35/49/80 DIM
x
*)
QTi
DALI
/ QTi (
1…10 V
) 3x14/24 DIM
x
QTi
DALI
/ QTi (
1…10 V
) 4x14/24 DIM
x
QTi
DALI
/ QTi (
1…10 V
) - T/E 1x18-57 DIM
x
x
x
x
QTi
DALI
/ QTi (
1…10 V
) - T/E 2x18-42 DIM
x
x
x
ECG
Lamp
40 W
26 W
32 W
42 W
57 W
!