Упрощенная HTML-версия
5.48
Technical data
Temperature dependence
As with fluorescent lamps in general, the rated luminous
flux for T5 HE and TE HO fluorescent lamps is specified
at 25°C, and T5 HE and T5 HO achieve their maximum
luminous flux at temperatures between 34 and 38°C.
One of the advantages of T5 lamps is therefore an
increased fixture efficiency. T5 FC
®
circular fluorescent
Control gear.
In order to operate, each lamp needs
control gear appropriate to its wattage. The control
gear not only starts the lamp but also limits the current
in the discharge phase. Please note: fluorescent lamps
are guaranteed only if they are operated with approved
control gear or with control gear declared to be suitable.
Control gear must comply with EN standards. Modern
control gear, such as QUICKTRONIC
®
, enables energy-
saving fluorescent lamps to be operated with optimum
economy and lighting comfort, see Section 9. Control
gear for sale in the European Union must carry the ENEC
mark (tested to IEC 60081). This safeguards the warranty
for the lamps under normal conditions.
Circuits
see circuit diagrams on page 5.53 and Section 9.
Power supply.
Generally 230 V AC. The permissible
voltage fluctuations for AC voltage is ±10%, i.e. 207 V
to 253 V. Electronic control gear is considerably less
affected by fluctuations in the supply voltage than
conventional control gear.
DC operation for emergency lighting systems in
accordance with DIN EN 50172 is indicated in the
specifications for the electronic control gear.
Accessories.
Control gear and holders are available from
electrical suppliers. OSRAM compact fluorescent lamps
and fluorescent lamps are cadmium-free.
lamps achieve their maximum luminous flux between
25 and 30°C.The luminous flux of a T5 HO CONSTANT
at 25°C is on average 97% of the maximum luminous
flux. 90% of the maximum luminous flux is achieved in
a temperature range from +5°C to +70°C (for 49 W:
+20°C to +80°C).