DT1384 datasheet(12/82 Pages) OSRAM

12 / 82 page

1. General

Economical long-life light sources with plug-in bases.

Compact Fluorescent Lamps OSRAM DULUX®

Technical Guide

1.5

What 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 electronic control gear (ECG).

With conventional control gear, a choke is used to limit the current and, in conjunction

with the starter housed in the lower section of the base (on OSRAM DULUX® S, D and T)

to ignite the lamp. OSRAM DULUX® L and OSRAM DULUX® F lamps require an external

starter.

OSRAM DULUX® D 18 W, OSRAM DULUX® T 18 W and OSRAM DULUX® T 18 W IN

need special conventional control gear, adjusted to a lamp current of 220 mA. Operation

of these lamps on CCG for L 18 W fluorescent lamps with a lamp current of 370 mA will

overload the lamps. This will cause serious blackening of the lamp glass in the electrode

region and reduce the life of the lamps considerably.

Conventional control gear is available in different versions (with integrated lampholder,

for example, or integrated in the mains plug). With some types of lamp, 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-tolerance capacitors, capacitive operation (choke and capacitor in series) is also

possible. To maintain the prescribed operating and preheating values, close-tolerance

capacitors (± 2 %) and chokes (± 1,5 %) from renowned manufacturers are needed for

series compensation – dielectric 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 refferred to as standard control gear, the group of induc-

tive control gear includes low-loss gear (LLG). As their name suggests, this type of con-

trol gear is characterised by its low power loss.

Operating lamps on electronic control gear 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. 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 disconnection of faulty lamps, etc.). There are ECG models for

most single and double-lamp arrangements. Some models have an integrated lamphol-

der (DULUXTRONIC®, for example).

OSRAM DULUX® lamps are equipped with pin bases. Appropriate lampholders are

available as standard products from all leading manufacturers in a wide variety of de-

signs (surface-mounting and push-in lampholders for screw or clamp mounting, for

example; see 6.1).

OSRAM DULUX® L lamps need a lamp support in addition to the lampholder. Lamp sup-

ports are optional for other OSRAM DULUX® lamps, such as the OSRAM DULUX® S and

OSRAM DULUX® F (see 6.2).

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