D7BCT datasheet(40/54 Pages) OSRAM

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OSRAM DULUX® EL – electronic energy saving lamps

Economical alternatives to ordinary light bulbs

Technical Guide

3.5.5 Operation on

switches with

load relief, spark

suppression or glow

lamps parallel

to the switch path

3.5.6 Operation on

motion detectors

3.5.7 Operation parallel

to uncorrected

CCG lamps

OSRAM DULUX® EL lamps cannot be operated on jumpered switches (even at high

resistance).

Because of the parallel path to the switch the OFF setting is never fully at high resi-

stance. If incandescent lamps are used this is of no importance. If however all the

incandescent lamps are replaced by OSRAM DULUX® EL lamps, then even small cur-

rents with the switch in the OFF setting will cause the high-impedance input circuit of

the OSRAM DULUX® EL to charge up until the threshold voltage at the electrolytic

capacitor for starting the HF generator is reached and the lamp consumes the energy

stored in the electrolytic capacitor in repeated attempts to start.

This leads to premature ageing and the brief weak flashes of light are irritating.

Necessary load relief elements have to be wired parallel to the load, and neon lamps

for illuminating the switches need to be connected parallel to the mains as permanent

lights or parallel to the load as signal lights.

OSRAM DULUX® EL lamps can be operated with motion detectors provided the

provisions of Section 3.5.4 (for the switching element of the motion detector) and

Section 3.5.5 (for any switch load relief elements parallel to the switch) are met.

If motion detectors are used in highly frequented areas, we recommend either setting

the ON time as long as possible to avoid unnecessary on/off switching or installing

OSRAM DULUX® EL FACILITY lamps.

For these applications the base down burning position is better than the base up posi-

tion because the ECG stays cooler and the PTC thermistor cools down faster ready for

the next gentle start (cf. Section 3.1).

If the lamps are used outdoors in conjunction with motion detectors, note that at

low temperatures low levels of luminous flux will be available immediately after the

lamp is switched on.

Again, the base down position is better (cf. 3.4.1).

If uncorrected conventional control gear is used (or highly inductive loads) a large

voltage surge may be generated when the control gear is switched off at maximum

current.

If an OSRAM DULUX® EL is connected in parallel on thee same circuit it will be

exposed to a large voltage surge which may destroy it ( see also Section 3.5.13).

3. Lamp data and lamp properties

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