D7BCT datasheet(35/54 Pages) OSRAM

35 / 54 page

OSRAM DULUX® EL – electronic energy saving lamps

Economical alternatives to ordinary light bulbs

Technical Guide

3.4.2 Lamp temperatures

The VDE (Association of German Engineers) recommends maximum temperatures at

certain critical locations in luminaires to ensure safe operation.

Compared with incandescent lamps, the temperatures that occur when OSRAM

DULUX® EL are in operation are much lower on the glass itself and on

the casing, and therefore in the luminaire. This means that OSRAM DULUX® EL lamps

with higher luminous fluxes can be used in luminaires that have been approved for

incandescent lamps up to a certain wattage.

Temperatures in °C at different places on OSRAM DULUX® EL LONGLIFE lamps and

incandescent lamps (230 V, free-burning, base up):

Temperature measurement point

1*)

OSRAM DULUX® EL LONGLIFE 5 W

OSRAM DULUX® EL LONGLIFE 7 W

OSRAM DULUX® EL LONGLIFE 11 W

OSRAM DULUX® EL LONGLIFE 15 W

OSRAM DULUX® EL LONGLIFE 20 W

OSRAM DULUX® EL LONGLIFE 23 W

Incandescent lamp 40 W

130

Incandescent lamp 60 W

150

Incandescent lamp 75 W

105

175

Incandescent lamp 100 W

130

220

100

*) Base edge overtemperature to EN 60 360 (permitted limit values: IEC 60432-1)

Fig. 12:

Temperature measurement points on OSRAM DULUX® EL lamps and

Incandescent lamps

3. Lamp data and lamp properties

D7BCT Datasheet(PDF) 35 Page - OSRAM GmbH