OSRAM DULUX F - Manual (Page 24)

Economical long-life light sources with plug-in bases
Compact Fluorescent Lamps OSRAM DULUX ®
Technical Guide
22
Hg-Vapour pressure in relation to the mercury (blue) and amalgam temperature (red).
The CONSTANT amalgam is an alloy with a high operation temperature and a wide homogenous
temperature range with optimum Hg-vapour pressure.
The high temperature amalgam is implemented in the OSRAM DULUX ® CONSTANT lamp range like
the DULUX ® L CONSTANT, DULUX ® T/E CONSTANT or the T5 HO CONSTANT double-capped
fluorescent lamps, which are suitable for the use in cold and hot ambient temperature environments,
in conjunction with proper designed light fittings.
1.4.1 Radio interference suppression
Even if used with conventional control gear (50/60 Hz), gas discharge lamps generate electromag-
netic radiation in the HF range. This radiation, however, has such a low energy, that radio and tele-
vision transmissions are normally not affected. The HF energy is dissipated as radiation and via
cables. With an increasing distance, the radiated energy decreases so fast (1/r²), that the radiation
component about one meter from the source is lower than the level of ambient noise.
To prevent interference being carried over the cables, OSRAM DULUX ® lamps with two-pin bases
have built-in interference suppression capacitors:
An interference suppression capacitor is also built into the external starter used for lamps with four-
pin bases that are being operated on conventional control gear. In the case of electronic control
gear, ECG manufacturers are responsible to ensure that their products meet the relevant radio
interference suppression requirements (CISPR 15 or EN 55015). In addition, interference suppres-
sion will also depend on the way in which cables are routed in the light fitting; this factor may be
quite considerable. The light fitting manufacturer must ensure that the light fitting has adequate
radio interference suppression properties.
If an additional interference suppression capacitor is installed in the light fitting, it has to be con-
nected parallel with the mains and not with the lamp.
Lamps with two-pin bases Interference suppression capacitor [nF]
OSRAM DULUX ® S 5 W, 7 W, 9 W, 11 W 3,3
OSRAM DULUX ® D 10 W, 13 W 3,3
OSRAM DULUX ® D 18 W, 26 W 1,2
OSRAM DULUX ® D ES 16 W, 23 W 1,2
OSRAM DULUX ® T PLUS 13 W 3,3
OSRAM DULUX ® T PLUS 18 W, 26 W
1)
1,2
OSRAM CFL SQUARE ® *
1) Also for the CONSTANT versions
* In preparation
∆T Hg ∆T Am