OSRAM QUICKTRONIC-M ECG for circular FL 16 mm - Manual (Page 37)

36
b) Louvre instead of a reflector
The same applies to louvers as to reflectors. Louvres also have to be
good electrical conductors and be connected to luminaire earth.
3.3 Permissible Cable
Lengths
Section 7 .1 refers to the maximum recommended cable lengths between
the ECG and the lamp. The additional information is discussed elsewhere
in this section. These maximum recommended cable lengths must be
adhered to in order not to overload the ECG and to ensure that the system
will start reliably even under adverse conditions (low ambient temperatures,
high humidity levels, aged lamps).
In order to comply with the radio interference suppression limits, the
instruction in Section xx must be followed. If the maximum recommended
cable lengths for operating an ECG-lamp system are fully exploited,
additional radio interference suppression measures may be needed such
as shielding or separate filters. Because there are so many different
interference factors involved (see Section 3.2), it is not possible to specify a
maximum cable length for an ECG-lamp system below which radio
interference suppression limits are guaranteed not to be exceeded.
3.4 „Hot Wires“ „hot wires“ (high potential). By this we mean the lamp cables which are at
the highest potential with respect to circuit earth or protective earth. The
other lamp cables are “cold wires” and have a correspondingly lower
potential with respect to earth.