OSRAM DULUX F - Manual (Page 57)

Economical long-life light sources with plug-in bases
Compact Fluorescent Lamps OSRAM DULUX ®
Technical Guide
55
4.1.2 Series circuit, inductive operation
The average starting times are also increased in the case of series circuits in inductive mode.
Amalgam lamps are not suitable for series circuits in inductive or capacitive operation.
4.2 Starting at low temperatures
Some of the models in the OSRAM DULUX ® compact fluorescent lamp range are ideal for use in
outdoor lighting systems where temperatures during the cold season may be 0 ºC or below. Some
models ignite quite readily even at those low temperatures, and some have critical ignition limits.
When selecting lamps and light fittings, therefore, the temperature factor should also be considered.
The following table shows the low temperature ranges at which various models with two-pin bases
will still start reliably in conjunction with conventional control gear.
Operating conditions:
230 V/50 Hz supply voltage
Base-down position
Reliable ignition at temperatures down to:
Lamp 5°C 0°C -5°C -10°C -15°C -20°C
OSRAM DULUX ® S 7 W, 9W 5 W, 11W
OSRAM DULUX ® D 26W 13W, 18W 10W
OSRAM DULUX ® D ES * 16W, 23W
OSRAM DULUX ® T 18W, 26W 13W
OSRAM DULUX ® T CONSTANT 26W
OSRAM DULUX ® L (XT) 24W, 36W 18W
OSRAM DULUX ® L SP 24W, 36W 18W
OSRAM DULUX ® F 24W, 36W 18W
OSRAM CFL SQUARE ® *
*) in preparation
With electronic control gear, the temperature range for reliable ignition is extended downwards,
even for critical models. Irrespective of the ambient temperature, the lamp is always supplied with
the optimum ignition pulse. Repeated attempts to ignite the lamp at low temperatures will damage
the lamp. With ECGs this situation is generally avoided.
The temperature range in which an ECG will reliably ignite a lamp depends on the ECG itself. Con-
sult the ECG manufacturer for more details. Depending on the particular lamp and the particular
ECG used, OSRAM QUICKTRONIC
® units can ignite compact fluorescent lamps at temperatures as
low as -15ºC or -25ºC.
Reliable ignition (inductive operation) of the lamps (at low temperatures according to the above
table) takes place at rated voltage within a period of 60 s. There is a chance that these ignition times
will increase as the lamps age (ageing of the starters) or if moisture penetrates the light fitting. In
capacitive operation a longer ignition time than with inductive operation must be expected.
In the case of inductive operation with reduced voltage, the temperature threshold for reliable igni-
tion of the lamps is raised. This longer ignition time must be taken into account.