OSRAM POWERTRONIC PT-FIT I ECG for HID lamps, with cable clamp - Manual (Page 15)

THE PRODUCT IN OPERATION
2.2.4.6. Wiring plans for downlights with
POWERTRONIC
® ECG with cable clamp
The wiring of independent devices has particular require-
ments, particularly from the point of view of the EMC.
For this reason the following section is dedi cated to
dealing with such applications.
Notes:
• Use short lamp cabling: approx. 0.5 m
• The PE-LUM connection may only be used for earthing
the luminaire.
15
Where longer cables (<1.5 m) are necessary, the PE should
be connected to the ECG and from the ECG to the lumi-
naire; the lamp cables must be twisted; ferrites must be
installed on the lamp cables.
Example of looping in a ferrite in order to reduce EMC
emissions
Figure 13: Wiring plan PTi 35 to 70 I with mains looping
Figure 16: (Sample) Wiring plan for improved EMC behavior
Figure 17: Looping in ferrite cores to reduce EMC emissions
Figure 14: Wiring plan PTi 20 I with mains looping
Figure 15: PTi 100 and 150 I as well as PT-FIT 35 to 70 I wiring plan
Ferrite core (1 twist)
ECG Lamp
ECG Lamp
Ferrite core (2 twists)
Downlight set-up
Mains
Mains
Mains
Mains
Mains
Ferrite core Z>250 Ohm
@ 100 MHz, 1 twist
ECG
ECG
ECG
Mains
Lum
Lum
Downlight set-up
Downlight set-up
Downlight set-up Mains
ECG