OSRAM DULUX F - Manual (Page 25)

Economical long-life light sources with plug-in bases
Compact Fluorescent Lamps OSRAM DULUX ®
Technical Guide
23
1.5 Which accessories are needed for OSRAM DULUX ® lamps?
As it is the case with fluorescent lamps, OSRAM DULUX ® compact fluorescent lamps (CFLs) require
suitable control gears. A distinction is made between lamps with two-pin bases for operation on
conventional (magnetic) control gear (CCG) and lamps with four-pin bases for operation on elec-
tronic control gear (ECG).
With conventional control gear, a magnetic ballast is used to limit the lamp current and, in conjunc-
tion with the starter situated in the lower section of the base (on OSRAM DULUX
® S, D and T, CFL
SQUARE ® 2 pin – centre housing) to ignite the lamp. OSRAM DULUX ® L, F and the OSRAM CFL
SQUARE ® with four-pin base lamps, operated with conventional control, gear require an external
starter.
OSRAM DULUX ® D 18 W and OSRAM DULUX ® T 18 W need special conventional control gear,
adjusted to a lamp current of 220 mA. Operation of these lamps on CCG for double-capped fluo-
rescent lamps 18 W with a lamp current of 370 mA will overload the lamps. This will cause blacke-
ning of the lamp glass in the electrode region and considerably reduce the lamp life time.
Conventional control gears (CCG) are available in different versions (e.g. with integrated lamp holder
or integrated in the mains plug). For some types of lamps, it is possible to connect two lamps in
series in conjunction with suitable control gear.
CCG operation is generally an inductive form of operation. In connection with suitable close-toler-
ance capacitors, capacitive operation (choke and capacitor in series) is also possible. To maintain
the prescribed operating and preheating values, close-tolerance capacitors (c.f. IEC 61049) and
chokes (c.f. IEC 60920) from renowned manufacturers are needed for series compensation – di-
electric strength of the capacitors 450 V ac. However, this mode of operation is suitable only for a
few types of lamp (see 3.2).
In addition to what is generally referred to as standard control gear, the group of inductive control
gear includes low-loss gear (LLG). As their name suggests, this type of control gear is characterized
by its low power loss.
Operation of single-capped fluorescent lamps with electronic control gear (ECG), best available
technology (BAT) is a much better option. Apart from the benefits of more comfortable light, longer
lamp life and greater luminous efficacy from the system (lamp + ECG), the functions of ignition,
current limitation and compensation are all integrated in the ECG. Most ECGs are also suitable for
operation on direct current (which means they can be used in emergency lighting systems) and
comply with safety standards (automatic switch-off of failed lamps with end of lamp life detection,
etc.). There are ECG models for most single and double-lamp arrangements. Some models have an
integrated lamp holder (e.g., DULUXTRONIC
® ).
OSRAM DULUX ® lamps are equipped with pin bases. Appropriate lamp holders are available as
standard products from all leading manufacturers in a wide variety of designs (e.g., surface-mount-
ing and push-in lampholders for screw or clamp mounting; see 6.1).
OSRAM DULUX ® L lamps need a lamp support in addition to the lampholder. Lamp supports are
optional for other OSRAM DULUX ® lamps, such as the OSRAM DULUX ® F (see 6.2 Lamp supports,
p. 88).