General information, optic specifications, index

L946D947_SRC.QXD 11-03-2004 08:15 Pagina 12.9
Gear types
Fluorescent lamps and high-intensity discharge lamps require a device
to limit the current due to the negative current-voltage
characteristics.Traditionally this is realised with electromagnetic
control gear in combination with either a glow-switch or electronic
starter.Almost the complete range of fluorescent and high-intensity
discharge luminaires of Philips Lighting are available with the
electromagnetic ballast system. From the point of view of energy
consumption, the electromagnetic control gear system is not
efficient: the losses in the ballast system are relatively high, and
significant improvements are possible by applying electronic control
gear instead.
Electronic control gear offers a number of advantages in comparison
with traditional electromagnetic ballasts:
- The electronic ballast offers interesting cost savings, such as a
reduction in energy consumption of about 25%, a substantial
extension of the lamp life up to 50% and thus a lowering of
maintenance costs.
- Application of electronic ballasts adds to the comfort in numerous
ways: no cathode flicker occurs; at the end of lamp life the lamp is
automatically switched off; smooth and rapid starting is ensured
without flickering; and no stroboscopic effects can arise due to the
high frequency at which the lamps are operated.
- Extra safety is assured through over-voltage detection, protected
control of the mains voltage input and a noticeably lower operating
temperature.
- Flexibility is enhanced: installations with fluorescent lamps, for
instance, are dimmable if a regulating ballast is selected, allowing for
adjustment of lighting levels to personal preference and the
opportunity for additional savings on energy, e.g. by daylight-linked
lighting control.
Following the trend towards greater efficiency and comfort, some
of the newer fluorescent lamps like all TL5 and high-wattage
PL-L types will operate only on electronic control gear.
Philips offers four options when selecting high-frequency ballasts
for fluorescent lamps: HF-BASIC for situations with infrequent onand-off
switching; HF-PERFORMER where the demands are
greater; HF-REGULATOR for areas where there is frequent
dimming; and HF-DALI ballast working in accordensie with the
DALI Protocol.
- HF-DALI (HFD):
Electronic regulating ballast for TL5, PL-L and TL-D lamps.
The high-frequency regulating ballasts permit light output
regulation down to 3% of the DALI control input.
- HF-REGULATOR (HFR):
Electronic regulating ballast for TL5, PL-L and TL-D lamps.
These high-frequency regulating ballasts permit light output
regulation down to 3% of the maximum light output by the 1-10 V
control input. Up to 60% reduction in energy consumption can be
achieved by using automatic lighting control systems like Luxsense
or Multisense.All Philips HF-Regulator electronic ballasts are fitted
with alpha-control.This dedicated integrated circuit ensures that
lamp life is unaffected by the dimming position; that lamp burning is
stable in every dimming position; and that energy savings are
maximised when dimming.
- HF-PERFORMER (HFP):
Electronic ballast for TL5, PL-L and TL-D lamps.
These high-frequency ballasts offer low energy consumption.
A warm-start circuit preheating the lamp electrodes enables the
lamp to be switched on and off without reducing useful life.
- HF-BASIC (HFB):
Electronic ballast for TL-D lamps (only for 36 W and 58 W lamps)
These high-frequency ballasts offer low energy consumption.
Luminaires with these ballasts are only to be applied in situations
where switching is infrequent as the lamp electrodes are not preheated
(‘cold start’) before ignition.
Efficacy of fluorescent lamp systems – typical examples
Lamp type Conventional Electronic gear
gear HFR, HFP
or HFB
TL-D 18 W Lamp 4 x 18 W 4 x 16 W
Ballast 14 W 10 W
4-lamp Total 86 W 74 W
system Lamp flux 4 x 1350 lumen 4 x 1400 lumen
System efficacy 63 lumen/Watt 76 lumen/Watt
Energy saving 16%
potential
TL-D 36 W Lamp 36 W 32 W
Ballast 8 W 4 W
1-lamp Total 44 W 36 W
system Lamp flux 3350 lumen 3200 lumen
System efficacy 76 lumen/Watt 89 lumen/Watt
Energy saving 22%
potential
TL-D 58 W Lamp 58 W 50 W
Ballast 11 W 5 W
1-lamp Total 69 W 55 W
system Lamp flux 5200 lumen 5000 lumen
System efficacy 75 lumen/Watt 89 lumen/Watt
Energy saving 26%
potential
TL5 HE 14 W Lamp 4 x 14 W
Ballast Not available 6 W
4-lamp Total 62W
system Lamp flux 4 x 1350 lumen
System efficacy 87 lumen/Watt
TL5 HE 28 W Lamp 28 W
Ballast Not available 4 W
1-lamp Total 32 W
system Lamp flux 2900 lumen
System efficacy 91 lumen/Watt
TL5 HO 49 W Lamp 49 W
Ballast Not available 5 W
1-lamp Total 54 W
system Lamp flux 4900 lumen
System efficacy 91 lumen/Watt
,GENERAL INFORMATION, OPTIC SPECIFICATIONS, INDEX 12.9