OSRAM POWERTRONIC PT-FIT I ECG for HID lamps, with cable clamp - Manual (Page 16)

THE PRODUCT IN OPERATION
2.2.4.7. Wiring plans for POWERTRONIC ® ECG PTo
The PTo devices 1 provide 3 different dimming modes;
these are provided under the 3DIM feature.
16
2.2.4.8. Stripping length
The required stripping length of wiring depends on the ter-
minal type used by the ECG. A length of 8.5 to 9 mm or 10
to 11 mm is appropriate, depending on the terminal ver-
sion. The exact stripping length is given on each ECG.
2.2.5. Inrush current limiter
Due to the initial charging of the storage capacitor respon-
sible for internal power supply, a strong pulse of inrush
current occurs on switching on an ECG. This pulse lasts
for a very short time (< 1 ms). For this reason, if very many
ECGs are switched on at the same time (especially when
switching on at a peak in mains voltage) a substantially
stronger overall current fl ows for a short time. Therefore
appropriate switching and protective devices are neces-
sary to ensure suffi cient current. The maximum number of
ECGs allowed per circuit breaker can therefore be calcu-
lated by observing the total maximum inrush current im-
pulse per device and its duration. This value is to be found
in the datasheet for each individual POWERTRONIC
® ECG.
Further information:
www.osram.com/powertronic
The ECG must be appropriately wired depending on the
dimming mode:
1 With the exception of the PTo 35
Figure 18: 3DIM – wiring in DALI ® mode
Figure 19: 3DIM – wiring in StepDIM mode
Figure 20: 3DIM – wiring in AstroDIM mode
Further information on the 3DIM functionality can be found
in the 3DIM application guide.
POWERTRONIC ® 3DIM ECG
HID lamp
HID out
Lamp
Mains cable
50/60 Hz
L
LH
LL
N
SD
DA
DA
PTo ECG
POWERTRONIC ® 3DIM ECG
HID lamp
HID out
Lamp
Mains cable
50/60 Hz
DALI ® bus/
DALI ® controller
L
LH
LL
N
SD
DA
DA
PTo ECG
POWERTRONIC ® 3DIM ECG
HID lamp
HID out
SD control
switch
Mains cable
50/60 Hz
L
N
SD
DA
DA
PTo ECG
Lamp
LH
LL