Instruction manual

32
By using complex input filters it is possible to reduce these disturbances to
a level well below the limits prescribed by the relevant standards. Each and
every OSRAM ECG complies with these standards. The way in which an
ECG is installed in a luminaire, however, can have a considerable
influence.
(see Section 7.5 Installation instruction for luminaires)
3.2.2.3 Disturbances due to
Fields
Owing to the various dynamic electrical and physical processes in the
ECG-lamp system, there is always an electromagnetic field around the
luminaire. In defining its effects, a distinction is made between electric and
magnetic components.
a) Electrical fields
Because of the high-frequency output voltage the lamp and
lamp wiring generate an electrical field. This is attenuated to a
level well below that prescribed in the relevant standards by
filtering on the output side and by suitable circuit design. What
applies to an individual ECG does not always automatically
apply to the entire system once the ECG has been installed in
the luminaire.
b) Magnetic fields
The magnitude of this field is determined solely by the lamp and
the geometrical arrangement of the entire system, particularly by
the areas enclosed by the lamp, ECG and wiring. The only
recommendation that can be made here is to aim for a self-
enclosed structure as far as possible and to comply with the
wiring instruction.
3.2.2.4 Selective Shielding
The following diagrams show the magnetic lines of force for two simple
linear luminaires