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OSRAM QUICKTRONIC INTELLIGENT DIM CFL User Manual

Page 16

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15

Notes:

Max. lamp cable length of the "hot end" (higher potential to

ground): T5, T8: 1 m/T4: 0.5 m

Excessively long lamp cables cause the following problems:

- Poor radio interference suppression

- Uncertain lamp detection (not in T8)

- Poor synchronization of 2-lamp OSRAM DALI/DIM ECGs

Lay the lamp cables close together and close to the lamp

Lamp cables must not be laid in metal pipes and must not be
shielded cables

Guide the cables of the different lamp ends separately

In the case of multi-lamp OSRAM DALI/DIM ECGs, the cables to
the respective lamp ends must be of the same length to prevent
differences in the brightness

When dimming florescent lamps the maximum lamp voltage is
reached at the lowest dimmer setting (3 %-10 %) due to the nega-
tive current-voltage characteristic

Maximum line lengths between dimmable ECG
(QTi DALI/DIM) 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

Every 0.5 m

Table 2: Maximum cable lengths between dimmable ECGs and
lamps

*

"Hot ends" are the lamp cables that have the highest potential to the
switching ground or protective ground. The other "cold ends" of the
lamp cables have a lower potential to ground.

Note:

Maximum capacitance of a filament cable pair to ground:

T5:

75

pF

T8/DL:

150

pF

Maximum capacitance between "hot" and "cold":

T5:

15

pF

T8:

30

pF