Technical data

QUICKTRONIC
®
Intelligent DALI DIM | Overview of dimmable control gears
9
The maximum 50-Hz leakage current of the ECG over the
leakage current circuit breaker (FI switch) is 0.5 mA.
— Mains and control lines may be routed together and
should be laid tightly against the luminaire wall.
— Mains and control lines may not be laid close to the
lamp cables.
— If crossing mains and lamp cables is unavoidable, they
should cross vertically.
— Do not lay PE wires with the lamp cables.
— Do not use shielded lamp cables (reduction of capaci-
tive leakage currents).
— The OSRAM DALI/DIM ECG must always be mounted
near the lamp(s) to keep lamp cables short and thus
attain good radio protection.
Notes
— Maximum lamp cable length of the “hot end”
(higher potential to ground): T5, T8: 1 m/DULUX: 0.5 m
— Lamp cables that are too long cause the following
problems:
— Poorer radio interference suppression
— Unreliable lamp detection (not with T8)
— Poorer synchronization on the 2-lamp OSRAM DALI/
DIM ECG
— Lay the lamp cables close to one another and near the
lamp.
— Lamp cables may neither be laid in metal pipes, nor may
they be shielded.
— The lines of the different lamp ends must be routed
separately.
— With multi-lamp OSRAM DALI/DIM-ECGs, the lines to
the respective lamp ends must be equal in length to
avoid differences in brightness.
— When dimming with fl uorescent lamps, the maximum of
the lamp voltage is reached due to the negative voltage
characteristic line in the lower dimming range (3 %-10 %).
Note
— Maximum capacity of a pair of fi lament wires to ground:
— T8/DL: 150 pF
— T5: 75 pF
— Maximum capacity between “hot” and “cold”:
— T5: 15 pF
— T8: 30 pF
2.3.4 Wiring instructions for dimmable luminaires
when operating multiple ECGs in a luminaire
Operating multiple dimmable ECGs in a single luminaire
can lead to interference effects and, therefore, to fl ickering,
incremental dimming or, in the worst case, the ECG even
shutting down if the design is unfavorable. The reason for
this is the couplings between the lamp current circuits of
multiple ECGs: If a lamp that is running at 100 % couples
only 1 % of its power into the neighboring lamp dimmed to
1 %, this represents an error of 100 %. The same applies to
couplings between a heating circuit, i.e. line-in and line-out
of a lamp side and the neighboring lamp current circuit.
Therefore, maintaining a minimum distance of 12 cm
between the lamp current circuits (lamp and lines) of the
different ECGs is recommended. Where this is not possi-
ble, the coupling between the lamp current circuits must
be reduced through especially careful wiring:
— Lay the lamp cables close to the associated lamps so
that the surface which encloses the lamp current circuit
becomes as small as possible. The lamp current circuits
of two ECGs may not overlap.
— Several centimeters distance should be maintained be-
tween the lamp cables of the ECGs.
— The “short” lamp cables (see also ECG inscription;
1-lamp 26–27, 2-lamp 24–25, 26–27) should lead to one
side of the lamp and be as short as possible (1 m T5,
T8; 0,5 m T4), the “long” lamp cables to the other side of
the lamp (1-lamp 21–22, 2-lamp 21–22, 21–23).
— Mains and control lines may not be laid close to the
lamp cables to allow smooth operation (avoidance of
unwanted couplings in the control line).
— All mains and control lines may be routed together.
There should, however, be several centimeters distance
between the lamp cables, so that the radio interference
suppression is not affected.
Protection class I luminaires
ECG
LN
PE
Radio interference suppression with PC I
Lamp
Earthed metal plate or reflector
R
Maximum line lengths between dimmable ECGs and
lamps
Cold ends* Hot ends*
1-lamp 21, 22 1-lamp 26, 27
2-lamp 21, 22, 23 2-lamp 24, 25, 26, 27
T5 1.5 m 1.0 m
T8 1.5 m (2 m HF DIM) 1.0 m (1.5 m HF DIM)
DULUX D/E, T/E All 0.5 m
* “Hot ends” are the lamp cables which have the highest potential
relative to the switching ground or protective earth. The other lamp
cables (“cold ends”) have a lower potential relative to the earth.