D7BCT datasheet(30/54 Pages) OSRAM

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OSRAM DULUX® EL – electronic energy saving lamps

Economical alternatives to ordinary light bulbs

Technical Guide

3.2

Start-up current

3.3

Photometric data

3.3.1 Spectral

distributions

Contrary to popular belief, frequent switching does not increase energy consumption.

At the moment of starting there is a short high surge of current of up to 25 A (approx.

µs half-value width, to charge the internal smoothing capacitor, VARIO: 48 A). This

small amount of energy is not lost, however, but is converted into light.

The relative spectral distribution is determined mainly by the colour appearance.

Various types and wattages have little effect on this curve.

The spectral distributions shown are therefore typical of all OSRAM DULUX® lamps of

the relevant colour appearance.

x axis: mW/(m2 x 5 nm x 1000 lx)

y axis: Wavelength in nanometres.

Notes on the diagrams:

The spectral radiant intensity distributions relate to an illuminance of 1000 lx. This has

the advantage that the absolute values of any illuminance can be determined a simply

from the following quotient:

Illuminance E (measured) x(y axis value)

1000 lx

The spectral intensities are grouped in wavelength ranges of 5 nanometres.

The values integrated across 5 nm are specified, irrespective of actual distributions.

This corresponds to the standard that is the basis for all calculations of subsequent

results (e. g. colour, colour rendering).

250

300

400

500

600

700

780 nm

100

200

300

400

500

600

Colour 827

(2700 Kelvin)

LUMILUX INTERNA®

250

300

400

500

600

700

780 nm

100

200

300

400

500

250

300

400

500

600

700

780 nm

100

200

300

400

500

Fig. 6: LUMILUX® colour appearances

Colour 860

(6000 Kelvin)

LUMILUX® Daylight

Colour 840

(4000 Kelvin)

LUMILUX® Cool White

3. Lamp data and lamp properties

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